Bevel Gears

Table of ContentsSpecial Characteristics, Points of Cautionin Selecting and Using Bevel Gears..........................page 228MHP High Ratio Hypoid Gears...................................page 234MBSG Ground Spiral Bevel Gears.............................page 236SBSG Ground Spiral Bevel Gears.............................page 238MBSA(B) Finished Bore Spiral Bevel Gears.............page 240SBS Spiral Bevel Gears...............................................page 248SB(SBY) Bevel Gears..................................................page 252SB Bevel Gears & Pinion Shafts................................page 260SUB Stainless Steel Bevel Gears..............................page 262PB Plastic Bevel Gears................................................page 264DB Injection Molded Bevel Gears..............................page 266BB Sintered Metal Busings..........................................page 266NISSEI KSP Ground Spiral Bevel Gears.........................page 268Catalog Number of KHK Stock GearsThe Catalog Number for KHK stock gears is based on thesimple formula listed below.Please order KHK gears by specifying their Catalog Numbers.7Bevel Gears(Example)Bevel GearsM BSG 2 - 40 20 RDirection of Spiral ( R )No. of teeth of mating gear(20)No. of teeth(40)Module(2)Type (Ground Spiral Bevel Gear)Material(SCM415)MaterialS S45CM SCM415SU SUS303P MC901D Duracon(M90-44)TypeB Bevel GearsBS Spiral Bevel GearsBSG Ground Spiral Bevel GearsHP High Ratio Hypoid Gears227

Bevel GearsLarge Selection of Modules, Gear Ratios, Materials and Styles !CharacteristicsKHK stock bevel gears are available in two types, spiral and straight tooth, in gear ratios of 1.5 to 5, and are offered in a large variety ofmodules, numbers of teeth, materials and styles.■ Main Features of Types of Bevel Gears OfferedThe following table lists the main features for easy selectionStraight bevel gears Spiral bevel gears TypeHypoidGearCatalog No.MHPMBSGSBSGMBSA(B) NOTE1SBSSB . SBYSUBPBDBHeat ToothPrecision SecondaryModule Gear Ratio MaterialsurfaceJIS B 1704OperationsMain CharacteristicTreatment finish1~1.52~42~42~61~51~81.5~31~30.5~115~20021.5~31.5~31.5~41.5~51.5~31.5~32SCM415SCM415S45CSCM415S45CS45C(CB FC200)SUS303MC901M90-44Combination of Our Know-How and Up-to-Date Manufacturing Techniques is at YourDisposal !Our popular KHK stock bevel gears with a large selection of sizesand types are the results ofour know-how and modernmanufacturing capabilities.We deliver reliable, highprecision, superior productsto you.Gear toothCarburizingCarburized(bore & hubsare masked)NOTE 2Gear teethinductionhardenedOverallcarburizedNOTE 3Gear teethinductionhardened----CutGroundGroundCutCutCutCutCutInjectionmolded322443(CB 4)NOTE 1: The catalog numbers with (B) at the end are identical in all features as the one without (B) except for bore and keyway dimensions.NOTE 2: Even though the bore and the hub portions are masked during the carburization and can be modified, care should be exercised sincethe hardness is somewhat higher.NOTE 3: MMSA(B) spiral bevel gears are carburized and do not allow secondary operations. However, the back surface of B7 style gears ismasked during the process so that it is possible to drill and pin on this surface.348△△△×△○○○△High speed reduction ratio, high efficiency, highrigidity and compact gear assembly.High strength, abrasion-resistant and compact forhigh-speed & torque use.Reasonably priced ground gear,yet remachinable except for the gear teeth.Ready to use without performing secondaryoperations. Strong and abrasion resistant.Large nos. of teeth and modules are offered inthese affordable spiral bevel gears.Popular series of straight bevel gears for manyuses.Suitable for food machinery due to SUS303's rustresistantquality.MC nylon products are light and can be usedwithout lubricant.Injection molded, mass-produced productions,suitable for office machines.○ Possible △ Partly possible ×Not possible228

KHK Technical InformationPlease select the most suitable products by carefully consideringthe characteristics of items and contents of the product tables. Itis also important to read all applicable “CAUTION” notes shownbelow before the final selection.Basically, KHK stock bevel gears should be selected as shownin the catalog in pairs (Ex: MBSG2-4020R should mate withMBSG2-2040L). But, for straight tooth bevel gears, there is someinterchangeability with different series. For plastic bevel gears, werecommend metal mating gears for good heat conductivity.■ Selection Chart for Straight Bevel Gears ( ○ Allowable × Not allowable)PinionSBSUBPBDBSelection Hints1. Caution in Selecting the Mating GearsGearSB SUB PB DB○○○×■ Calculation of Bending Strength of Gears○○○×○○○××××○2. Caution in Selecting Gears Based on Gear StrengthThe gear strength values shown in the product pages werecomputed by assuming a certain application environment.Therefore, they should be used as reference only. We recommendthat each user computes their own values by applying the actualusage conditions. The table below contains the assumptionsestablished for these products in order to compute gear strengths.CAUTION: The allowable torque of MHP High Ratio Hypoid Gears is the actualmeasured value when the pinion is rotating at 600 min -1 .3. Caution with Regard to the Special Characteristics of Bevel Gears1 MBSA(B) finished bore spiral bevel gears are carburizedthroughout so that they do not permit any secondary operations.However, the back surface of B7 style gears (ring type) ismasked during the process so that it is possible to drill and pinon this surface.2 The keyway sizes of MBSA(B) finished bore spiral bevel gearsare made according to JIS B 1301, medium quality (Js9), but thefinal heat treating may cause some deformation.3 The bore of SBS spiral bevel gears may somewhat be deformeddue to heat treatment and do not reach H7 tolerance.4 Due to the characteristics of the material, PB plastic bevel gears’product quality may be affected by heat or moisture absorption.Catalog No.ItemFormula NOTE 1No. of teeth of mating gearsRotationDurabilityImpact from motorImpact from loadDirection of loadAllowable bending stress at root σFlim NOTE 2Safety factor KRMBSGMBSA(B)SBSGSBSSBSBYFormula of bevel gears on bending strength(JGMA403-01)No. of teeth of mating gears of same set100min -1 (600min -1 for MBSG & SBSG)Over 10 7 cyclesUniform loadUniform loadBidirectional31.33kgf/mm 2 31.33kgf/mm 2 14kgf/mm 2 12.67kgf/mm 2 7kgf/mm 21.2SUB PB DBThe Lewis formula-100min -1-Allowable bending stress1.15kgf/mm 2(40 O C with nolubricant)NOTE3m 0.5 4.5m 0.8 4.0m 1.0 3.5kgf/mm 2■ Calculation of Surface Durability (Except those in common with bending strength)Formula NOTE 1Kinematic viscosity of lubricantGear supportAllowable Hertz stress σHlimSafety factor CRFormula of bevel gears on surface durability (JGMA404-01)100cSt(50℃ )Shafts & gear box have normal stiffness, and gears are supported on one end166kgf/mm 2 166kgf/mm 2 90kgf/mm 2 49kgf/mm 2 41.3kgf/mm 21.15NOTE 1: The gear strength formula is based on JGMA (Japanese Gear Manufacturers Association) specifications. “MC Nylon Technical Data” by Nippon PolypencoLimited and “Duracon Gear Data” by Polyplastic Co. Also, the units (min -1 ) of number of rotations and unit (kgf/mm 2 ) of stress are adjusted to the units neededin the formula.NOTE 2: Since the load is bidirectional, the allowable bending stress at root σFlim, used in JGMA 403-01 formula is set to 2/3 of the value.NOTE 3: The value for DB m0.5 was assumed by KHK.4. Other Points to Consider in the Selection ProcessSee the similarly titled section for miter gears.229

Bevel GearsApplication HintsIn order to use KHK stock gears safely, carefully read theApplication Hints before proceeding. For “Notes on StartingOperations” and “Other Points to Consider in Applications”, pleasesee the Application Hints of Miter Gear Selection.5 MBSA(B) finished bore spiral bevel gears are carburizedthroughout, so that no secondary operations can be performed(except B7 style items). For items with induction hardened teeth,such as SBSG and SBS series, the hardness is high near thetooth root. When machining the front end, the machined areashould be 4 to 6mm smaller than the dimension, J.1. Caution on Performing Secondary Operations1 If you are reboring, it is important to pay special attention tolocating the center in order to avoid runout.2 The reference datum for gear cutting is the bore. Therefore, it isbest to use the bore for locating the center. If it is too difficult todo for small bores, the alternative is to use one spot on the boreand the runout of the side surface.3 If reworking using scroll chucks, we recommend the use of newor rebored jaws for improved precision. Please exercise cautionnot to crush the teeth by applying too much pressure. Anyscarring will cause noise during operation.Lathe Operations6 For tapping and keyway operations, see the examples givenin “1. Caution on Performing Secondary Operations” in KHKStock Spur Gear section. When cutting keyways, to avoid stressconcentration, always leave radii on corners.7 PB plastic bevel gears are susceptible to changes due totemperature and humidity. Dimensions may change betweenduring and after remachining operations.8 When heat treating S45C products, it is possible to get thermalstress cracks. It is best to subject them to penetrant inspectionafterwards. While the teeth strength may increase four fold, theprecision of the gear will drop approximately one grade.9 For the handling conveniences, SB and SBY series listed belowhas the tapped holes (180 ° apart, 2 places) on the holdingsurface.Catalog No.SB6-4515SBY8-4020SBY8-4515SBY5-6015SBY6-6015PCD(mm)130180210180220Tap SizeM10 deep 15M10 deep 20M10 deep 20M10 deep 15M10 deep 204 The production of bevel gears module 2.5 and over with apinning hole on the back of the hub in non-ground teeth hasbeen phased out as of August 2003. However, we may havesome stock of this configuration.230

KHK Technical Information2.Points of Caution in Assembling1 Since bevel gears are cone shaped, they produce axial thrustforces. Especially for spiral bevel gears, the directions of thrustchange with the hand of spiral and the direction of rotation. Thisis illustrated below. The bearings must be selected properly tobe able to handle these thrust forces.PRODUCT IMPROVEMENT ANNOUNCEMENTIn order to increase the gear strength of KHK standard BevelGears, starting in June 2004, the following changes have beenintroduced. During this transition, some of the specificationswill change.Direction of rotation and thrust forcethrustthrustDrivethrustthrust1. Applicable SeriesMBSG Ground Spiral Bevel Gears – (8 Items)2. Improvement DetailsIncrease in gear strength (Approximately 15% higherbending strength compared to previous one)3. Change in the specificationsthrustDrivethrustBeforeAfterHeat treatmentTeeth induction hardenedafter carburizingCarburizing (bore & hub portion masked)thrustthrustSurface Treatment Black oxide No black Oxide2 KHK stock bevel gears are designed such that, when assembledaccording to the specified mounting distance with a toleranceof H7~H8, the backlash shown in the table is obtained.Mounting distance error, offset error and shaft angle error mustbe minimized to avoid excessive noise and wear. For variousconditions of teeth contact, please see page 198 "Correct ToothContact" and "Incorrect Tooth Contact".3 If a bevel gear is mounted on a shaft far from the bearings, theshaft may bend. We recommend mounting bevel gears as closeto the bearings as possible. This is especially important sincemost bevel gears are supported on one end. The bending ofshafts will cause abnormal noise and wear, and may even causefatigue failure of the shafts. Both shafts and bearings must bedesigned with sufficient strength.4 Due to the thrust load of bevel gears, the gears, shafts andbearings have the tendency to loosen up during operation. Bevelgears should be fastened to the shaft with keys and set screws,taper pins, step shafts, etc.5 When installing MBSA(B) spiral bevel gears in B7 style (ringtype), always secure the gears onto the mounting base with taperpins to absorb the rotational loads. It is dangerous to secure withbolts only.The corner tips of the gear-teeth of KHK stock Bevel Gears aremachine chamfered for safety and for prevention of damages.■The chamfering of the corner gear tips for bevel gear (unit: mm)over 5Module0.5 up to 11 up to 2.52.5 up to 5Outside edge R0.51.02.03.0Inside edge Rall burrs removed0.51.01.5Example of KHK Gear ApplicationsTaper pinGearComponents of automated line (Bevel Gears)Mounting base231

Bevel Gears■ Features of MHP High Ratio Hypoid GearsA pair of MHP high-ratio hypoid gears are able to produce an amazing speed of reduction of 200:1 in one stage.1. Total-cost reductionThe MHP provides a compact gearingbody replacing several stages ofreduction gears. This reduces the costsharply.2. High efficiencyCompared to worm gear drives, the MHPhas less sliding contact. The resultinghigher efficiency allows the use of smallermotors (See the graph on the right).3. High rigidityThe carburized hypoid gears lead tosmaller size than comparable worms gears.4. Compact gear assemblyThe size of the gear housing is nearly thesame as outer diameter of the large gear.(See the diagrams below)EfficiencyComparison of the efficiency of MHP High Ratio Hypoid Gears and Worm GearsWorm GearsMHPComparison of MHP and worm GearsMHPWorm GearPositionReduction■ How to determine the radial and thrust loadsBefore using the MHP high-ratio hypoid gears, be sure to confirmthe direction of radial and thrust loads. Following equations areused to compute these loads. The radial and thrust load coefficientsare given on the product pages.Radial load calculationStrengthSCM415 Heat TreatedMiniaturizationof Main BodyFC, BCRaw MaterialS45C+Induction HardenedWRP: Radial load on the pinion or L(N)WRP= WKp X TG X nzWhereWKP: Radial load coefficient of pinion or L(given on the product pages)TG: Torque of gear or R(N.m)n: Number of teeth of pinion or Lz: Number of teeth of gear or REfficiencyReduced MotorCapacityWRG: Radial load on the gear or R(N)WRG= WKG X TGWhereWKG: Radial load coefficient of gear or R (given on the product pages)TG: Torque of gear or R(N.m)ex,50Wex,60WThrust load calculationWXP: Thrust load on the pinion or L(N)WXP: WNP X TG X nzWhereWNP: Thrust load coefficient of pinion or L (given on the product page)TG: Torque of gear or R(N.m)n: Number of teeth of pinion or Lz: Number of teeth of gear or RWXG: Thrust load of gear of R(N)WXG=WNG X TGWhereWNG: Thrust load coefficient of gear or R (given on the product pages)TG: Torque of gear or R(N.m)R: Right-hand thread at speed ratio 1/1L: Left-hand thread at speed ratio 1/1232

KHK Technical Information■ Variations in tooth contact due to poor alignment of gearsIf the gear engagement position is out of the normal position, variations in tooth contact, as illustrated below, may appear.(1) Tooth contact ?in case of a shaft-angle error (2) Tooth contact in case of a shaft-offset errorToe contactToe contactToecontactToe contactErrorHigh toecontactLow toecontactHigh heel contactLow heel contactError(offset is large)Low toe contactHeelcontactHeel contactHeel contactErrorHigh toecontactError(offset is small)Low heel contactHigh heel contactHeel contact(3) Tooth contact in case of a pinion set position error (4) Tooth contact in case of a gear set position errorLow heel contactToe contactHigh toecontactErrorToecontactLow toe contactHigh heel contactHeel contactHeel contactErrorLow toecontactHigh toe contactLow heel contactErrorToecontactHeel contactHeel contactErrorToe contactHigh heel contact233

ModulesMHP High Ratio Hypoid Gears 1~1.5OffsetB8 Shape■ Modules 1~1.5BevelGearsCatalogNo.MHP1 -0453RMHP1 -3045LMHP1.5-0453RMHP1.5-3045LMHP1 -0603RMHP1 -3060LMHP1.5-0603RMHP1.5-3060LMHP1 -0602RMHP1 -2060LMHP1.5-0602RMHP1.5-2060LMHP1 -0451RMHP1 -1045LMHP1.5-0451RMHP1.5-1045LMHP1 -0601RMHP1 -1060LMHP1.5-0601RMHP1.5-1060LMHP1 -0901RMHP1 -1090LMHP1 -1201RMHP1 -1120LMHP1 -1801RMHP1 -1180LMHP1 -2001RMHP1 -1200LDirection ofSpiralRLRLRLRLRLRLRLRLRLRLRLRLRLRLNominalmodule1.01.51.01.51.01.51.01.51.01.51.01.51.01.5Actualmodule1.0671.7331.0501.6331.0501.6331.067MHP2341.7331.0501.6331.0890.8171.0001.000■Twist direction and offset positionNo. ofteeth045003045003060003060003060002060002045001045001060001060001090001120001180001200001Gear ratio Pitch dia. Face width Offset Shape015015020020030030045045060060090120180200048.0010.4078.0016.8063.0011.5098.0018.4063.0011.7098.0018.4048.0009.4078.0015.8063.0011.3098.0017.8098.0016.2098.0015.4180.0028.2200.0030.7(06)(10)(08)(10)(08)(10)(06)(10)(08)(10)(10)(10)(15)(18)1018152218281425203032326065B9B8B9B8B9B8B9B8B9B8B9B8B9B8B9B8B9B8B9B8B9B8B9B8B9B8B9B8A048.0010.3078.0017.6063.0011.7098.0015.7063.0012.8098.0017.7048.0010.1078.0018.3063.0012.9098.0017.7098.0015.7098.0013.4180.0022.4200.0021.5B035.1—056.5—046.4—076.8—046.4—076.7—034.9—056.0—046.3—076.8—076.2—076.4—148.2—162.4—CH712—14—12—20—12—20—12—14—12—20—20—20—25—25—DFor shafts h730.022.140.031.134.026.150.036.134.022.150.031.130.020.140.026.134.022.150.031.150.031.150.031.170.042.170.042.1The hypoid-gear engagement position is dependent on the twist direction of the pinion thread.E14—20—16—25—16—25—14—20—16—25—25—25—35—35—F07—10—08—13—08—13—07—10—08—13—13—13—18—18—Fig. 1 Fig. 2Fig. 1: Below centerThe engagement position with the left-handpinion is called the below center.Fig. 2: Above CenterThe engagement position with the right-handthread pinion is called the above center.NOTE 3: KHK stock Hypoid Gears areavailable in Below Center type (Fig. 1) only.Above Center type (Fig. 2) is unavailable.

Hypoid GearsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 3Gleason20°SCM415Carburizing NOTE 4SpecificationsTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cutting60~63HRCNOTE 4: The areas marked with ---- on the diagram are masked duringthe carburizing and can be modified, even though the hardnessis somewhat higher.—CutBore (Shaft if pinion)Secondary Operations Possible except tooth areaB9 ShapeG16.3—23.7—18.1—28.7—17.8—28.2—16.5—23.9—17.9—28.2—28.8—29.3—40.1—40.6—H S R019 —127 094028 —170 116021 —142 102033 —199 135021 —134 094033 —175 116019 —115 085028 —152 102021 —134 094033 —175 116033 —170 116033 —170 116047 —242 154047 —252 154—113—148—125—168—120—149—104—138—122—151—149—149—200—205Radial load coefficient NOTE 1 Thrust load coefficient NOTE 1 Allowabletorque (N.m)CW CCW CW CCWNOTE 20048.480147.300026.780100.090033.880159.430020.440119.320033.590186.590020.390142.710048.040400.810026.360233.590033.340357.610022.630303.060021.080464.700021.171720.780011.690614.040010.770695.620 - 37.67-0523.740 - 18.67-0338.450 - 26.20-0502.910 - 16.54-0194.450 - 24.15-0784.310 - 15.29-0466.200 - 35.58-1579.790 - 16.041034.080 - 23.12-1564.810 - 17.19-0974.400 - 15.72-1404.280 - 16.46-1811.470 - 9.25-1458.900 - 8.90-1430.750013.000969.920008.980566.720010.110956.550007.150577.560008.211461.230005.960899.100011.133014.600006.881755.840007.412936.720005.821912.110005.712777.980006.393718.130003.533026.670003.583074.35-0031.74- 831.16-0021.19- 466.63-0023.73- 829.74- 0013.950 - 511.77- 0024.77- 1248.60- 0014.750 - 782.21- 0034.11- 2605.26- 0022.02- 1439.58- 0025.14- 2514.09- 0015.81- 1675.65- 0015.17- 2443.73- 0014.76- 3326.46- 0007.96- 2721.83- 0007.05- 2808.83010.30041.19023.34082.38024.12087.28011.28046.58025.30093.95071.39051.78259.88333.43Allowabletorque (kgf.m)(01.05)(04.20)(02.38)(08.40)(02.46)(08.90)(01.15)(04.75)(02.58)(09.58)(07.28)(05.28)(26.50)(34.00)0.05~0.150.10~0.200.05~0.150.10~0.200.05~0.150.10~0.200.05~0.150.10~0.200.05~0.150.10~0.200.05~0.150.03~0.100.05~0.150.05~0.150.150.290.500.730.290.450.941.150.290.280.940.770.160.220.500.480.290.280.940.770.940.760.940.753.991.884.761.88MHP1 -0453RMHP1 -3045LMHP1.5-0453RMHP1.5-3045LMHP1 -0603RMHP1 -3060LMHP1.5-0603RMHP1.5-3060LMHP1 -0602RMHP1 -2060LMHP1.5-0602RMHP1.5-2060LMHP1 -0451RMHP1 -1045LMHP1.5-0451RMHP1.5-1045LMHP1 -0601RMHP1 -1060LMHP1.5-0601RMHP1.5-1060LMHP1 -0901RMHP1 -1090LMHP1 -1201RMHP1 -1120LMHP1 -1801RMHP1 -1180LMHP1 -2001RMHP1 -1200LNOTE 1: Factors to be used for calculating radial and thrust loads, CW and CCW stand for clockwise and counterclockwise rotation, respectively. See B8Shape above. A plus sign means that two gears in a set are apart from each other when load is applied. A minus sign means that they approacheach other when load is applied. For the method of calculation, see “How to determine the radial and thrust loads” on page 232.NOTE 2: The allowable torques are obtained from the results of experimentation with the pinion at 600 min -1 lubricated with Kingstar SG-O (NIHON GREASE).Backlash(mm)Weight(kgf)CatalogNo.BevelGearsMHP235

ModulesMBSG Ground Spiral Bevel Gears 2~4Gear Ratio 2 ■ Modules 2~4B3 ShapeCatalogNo.DirectionofSpiralModulemNo. ofteethzBoreAH7Hub dia.BPitch dia.COutside dia.MBSG2 -4020R R40 15 45 080 81.1 045 31.78 26.10 18.00 29.0MBSG2 -2040L L220 12 35 040 44.1 055 28.16 16.02 13.75 27.014MBSG2.5-4020R R 40 16 55 100 101.29 050 33.35 26.29 16.00 30.0MBSG2.5-2040L L2.520 12 43 050 055.12 065 31.01 16.28 13.25 29.017MBSG3 -4020R R 40 20 65 120 121.57 060 39.81 31.57 20.00 35.0MBSG3 -2040L L320 16 52 060 066.03 080 38.90 21.51 18.00 36.520MBSG4 -4020R R 40 25 80 160 162.06 075 48.27 37.06 22.00 42.0MBSG4 -2040L L420 20 70 080 088.46 100 45.38 22.12 17.50 43.027CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.DMountingdistanceETotal lengthFCrown toback lengthGHub widthHLength of boreIFace widthJBevelGearsMBSG■ Contact Surface of Spiral Bevel GearsTooth surfaces of spiral gears have concave and convex sides. Changesin the rotational direction of the driving gear alters the contact surfaceaccordingly. The illustrations show top views of RH and LH spiral gears,and the tables on the right explain the different contact surface dependingon the situation.Concave surfaceRH spiral as a driving gearRotating direction ofdriving gear NOTE 1RH rotation(clockwise)LH rotation(counterclockwise)Driving gear (RH spiral)Convex surfaceConcave surfaceContact surfaceDriven gear (LH spiral)Concave surfaceConvex surfaceLH spiral as a driving gearToothRH spiralConvexsurfaceToothLH spiralRotating direction ofdriving gear NOTE 1RH rotation(clockwise)Driving gear (LH spiral)Concave surfaceContact surfaceDriven gear (RH spiral)Convex surfaceLH rotation(counterclockwise)Convex surfaceConcave surfaceNOTE 1: Rotational directions given in the tables are for viewing the gears fromthe hub side.236

Ground Spiral Bevel GearsPrecision gradeGear teethPressure angleHelix angleMaterialHeat treatmentJIS B 1704 grade 2Gleason20°35°SCM415Carburizing NOTE 1SpecificationsTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear grindingSecondary Operations55~60HRCNOTE 1: The areas marked with ---- on the diagram are masked duringthe carburizing and can be modified, even though the hardness issomewhat higher.—CutBorePossible for portion notcarburizingB4 ShapeHoldingsurface dia.K052.70025.39066.99029.97080.28036.56106.63051.25Tip angleL66°06'30°04'65°28'30°07'65°42'29°44'65°29'30°45'ShapeB4B3B4B3B4B3B4B3Allowable torque (N.m) NOTE 2Bending strength051.80025.90099.30049.70169.40084.90405.00203.00Surface durability087.19043.59170.20085.10294.80147.40722.40361.20Allowable torque (kgf.m)Bending strength(05.280)(02.650)(10.130)(05.070)(17.280)(08.650)(41.30)(20.70)Surface durability(08.891)(04.445)(17.360)(08.678)(30.060)(15.030)(73.660)(36.830)NOTE 2: The allowable torques shown in the table are the calculated values according to theassumed usage conditions. Please see page 229 for more details.Backlash(mm)Weight(kgf)Catalog0.05 ~ 0.550.11MBSG2 -4020R0.17 MBSG2 -2040L0.06 ~ 0.960.12MBSG2.5-4020R0.27 MBSG2.5-2040L0.07 ~ 1.520.13MBSG3 -4020R0.55 MBSG3 -2040L0.10 ~ 3.30.16MBSG4 -4020R1.1 MBSG4 -2040LPitch Angle Gear: 63°26’ Pinion: 26°34’No.■ Forces Acting on Spiral Bevel Gear TeethFor a spiral bevel gear with shaft angle ∑ = 90°, pressure angleαn=20° and spiral angleβm = 35°, the tables below show the axial thrust force Fa and the radial force Fr when atangential force Fu of 100 units is applied at the center of face width.BevelGearsMBSGThe tables show the values ofaxial thrust force Faradial force Fr(1) Forces acting upon pinion(2) Forces acting upon gearContactsurfaceConcavesurfaceConvexsurface1.080.9-18.1Gear ratio z2 /z1surface1.5 2.0 2.5 3.0 4.0 5.0 1.082.9 82.5 81.5 80.5 78.7 77.4-1.9 8.4 15.2 20.0 26.1 29.8-18.1 -33.6 -42.8 -48.5 -52.4 -57.2 -59.980.9 75.8 71.1 67.3 64.3 60.1 57.3ContactConcavesurfaceConvexsurface80.9-18.1Gear ratio z2 /z11.5 2.0 2.5 3.0 4.0 5.075.8 71.1 67.3 64.3 60.1 57.3-33.6 -42.8 -48.5 -52.4 -57.2 -59.9-18.1 -1.9 8.4 15.2 20.0 26.1 29.880.9 82.9 82.5 81.5 80.5 78.7 77.4237

ModulesSBSG Ground Spiral Bevel Gears 2~4Gear Ratio 1.5 ■ Modules 2~4B3 ShapeCatalogNo.SBSG2 -3020RSBSG2 -2030LSBSG2.5-3020RSBSG2.5-2030LSBSG3 -3020RSBSG3 -2030LSBSG4 -3020RSBSG4 -2030LDirectionofSpiralRLRLRLRLModulem22.534No. ofteethz3020302030203020BoreAH71210151216162020Hub dia.B3530454050457060Pitch dia.C060040075050090060120080Outside dia.D61.6043.55077.09054.43092.21065.58122.85087.34MountingdistanceE4045505555707590Total lengthF26.6024.9133.8630.8835.3440.1747.4948.17Crown toback lengthG21.2016.1826.5618.9826.6626.8637.1432.45Hub widthH15.0011.6718.0014.1717.0020.0025.0023.33Length of boreI2322302831374043Face widthJ11151720BevelGearsSBSGGear Ratio 2 ■ Modules 2~4SBSG2 -4020RSBSG2 -2040LSBSG2.5-4020RSBSG2.5-2040LSBSG3 -4020RSBSG3 -2040LSBSG4 -4020RSBSG4 -2040LRLRLRLRL22.534402040204020402012121512201620204032504060507060080040100050120060160080081.00044.10101.27055.20121.48066.07162.07088.5004506005507506509008012032.2634.0039.6543.6145.7650.6353.6966.2425.9921.0031.2726.3036.4731.5242.0742.1218.018.020.022.524.027.528.035.0273234403847456215202228Gear Ratio 3 ■ Modules 2~3SBSG2 -4515R R45 12 40 090.0 090.67 40 30.29 26.01 17.00 26SBSG2 -1545L L215 10 24 030.0 034.78 60 29.66 15.80 14.00 2915SBSG2.5-4515R R45 15 50 112.5 113.32 50 38.25 32.47 22.00 352.520SBSG2.5-1545L L15 12 30 037.5 043.36 75 38.27 19.73 17.50 37SBSG3 -4515R R45 20 60 135.0 135.99 55 40.59 33.98 20.00 35SBSG3 -1545L L32315 15 38 045.0 052.08 90 44.98 23.68 21.33 44CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.238

Ground Spiral Bevel GearsSpecificationsPrecision gradeGear teethPressure angleHelix angleMaterialHeat treatmentJIS B 1704 grade 2Gleason20°35°S45CTeeth induction hardenedTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear grinding48~53HRCBlack oxide exceptground surfaceGroundBoreSecondary Operations Possible except tooth areasB4 ShapeHoldingsurface dia.K37.5621.3445.6127.4257.1434.7178.5946.89Tip angleL60°43'37°40'61°01'37°41'59°20'38°45'58°52'38°25'ShapeB4B3B4B3B4B3B4B3Allowable torque (N.m) NOTE 1Bending strength014.080009.607029.040019.810048.440033.050105.800072.180Surface durability014.160009.439029.700019.800050.360033.580113.000075.340Allowable torque (kgf.m)Bending strength(01.4360)(00.9797)(02.9610)(02.0200)(04.9400)(03.3700)(10.7900)(07.3600)Surface durability(01.4440)(00.9625)(03.0290)(02.0190)(05.1350)(03.4240)(11.5200)(07.6830)Backlash(mm)Weight(kgf)Catalog0.05 ~ 0.250.11SBSG2 -3020R0.12 SBSG2 -2030L0.06 ~ 0.550.12SBSG2.5-3020R0.23 SBSG2.5-2030L0.07 ~ 0.80.13SBSG3 -3020R0.5 SBSG3 -2030L0.10 ~ 1.80.16SBSG4 -3020R1.1 SBSG4 -2030LPitch Angle Gear: 56°19’ Pinion: 33°41’No.048.46021.11059.26020.53073.78029.63102.3942.865°20'29°58'65°50'30°18'65°03'29°50'65°30'30°47'B4B3B4B3B4B3B4B325.4812.7751.6625.8884.8442.50195.30097.8826.7213.3655.1127.5691.9445.96217.200108.700(02.598)(01.302)(05.268)(02.639)(08.651)(04.334)(19.920)(09.981)(02.725)(01.362)(05.620)(02.810)(09.375)(04.687)(22.150)(11.080)0.05 ~ 0.50.11SBSG2 -4020R0.19 SBSG2 -2040L0.06 ~ 1.10.12SBSG2.5-4020R0.4 SBSG2.5-2040L0.07 ~ 1.60.13SBSG3 -4020R0.7 SBSG3 -2040L0.10 ~ 3.30.16SBSG4 -4020R1.5 SBSG4 -2040LPitch Angle Gear: 63°26’ Pinion: 26°34’BevelGearsSBSG59.0719.1572.8220.4888.2028.5273°25'22°50'73°13'22°22'73°18'22°32'B4B3B4B3B4B334.8211.1658.9618.8999.3431.8128.13009.37748.30016.10082.47027.490(03.551)(01.138)(06.012)(01.926)(10.130)(03.244)(2.8680)(0.9562)(4.9250)(1.6420)(8.4100)(2.8030)NOTE 1: The allowable torques shown in the table are the calculated values according tothe assumed usage conditions. Please see page 229 for more details.0.05 ~ 0.70.11SBSG2 -4515R0.1 SBSG2 -1545L0.06 ~ 10.12SBSG2.5-4515R0.2 SBSG2.5-1545L0.07 ~ 1.80.13SBSG3 -4515R0.35 SBSG3 -1545LPitch Angle Gear: 71°34’ Pinion: 18°26’239

ModulesMBSA(B) Finished Bore Spiral Bevel Gears 2~6WidthDepthGear Ratio 1.5 ■ Modules 2~6B3 ShapeBevelGearsMBSẠMBSBCatalogNo.MBSA2 -3020RMBSB2 -3020RMBSA2 -2030LMBSB2 -2030LMBSA2.5-3020RMBSB2.5-3020RMBSA2.5-2030LMBSB2.5-2030LMBSA3 -3020RMBSB3 -3020RMBSA3 -2030LMBSB3 -2030LMBSA4 -3020RMBSB4 -3020RMBSA4 -2030LMBSB4 -2030LMBSA5 -3020RMBSA5 -2030LMBSB5 -2030LMBSA6 -3020RMBSA6 -2030LMBSB6 -2030LDirectionofSpiralRLRLRLRLRLRLModulem2.02.02.52.53.03.04.04.05.05.06.06.0No. ofteethz302030203020302030203020BoreAH720221518222518202530222535403035803540904550Hub dia.B4035484360537570—87—105Pitch dia.C060040075050090060120080150100180120Outside dia.061.36043.49076.74054.43092.21065.58122.91087.34—109.20—130.4804004505005506006507008507010508012526.8024.9633.6030.0840.3435.1743.9945.5335.5355.0538.8665.5721.0216.1626.3118.9831.6621.8632.1827.4523.8033.0724.3738.49Hub width Length of bore Face width14.0013.3318.0015.1721.0017.6721.0021.67—25.67—30.00232330283632.539423151336011.011.014.014.017.017.023.023.028.028.034.034.0037.56024.34048.01031.02057.14036.20076.72048.07097.36062.04115.61072.41CAUTION: With the exception of B7 type gears, dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and somedifferences will occur due to the corner chamfering of the gear tips.CAUTION: The products which are hardened by carburizing allow no secondary machining, however, the back surface of B7 type gears is masked during the process sothat it is possible to drill and pin on this surface.DMountingdistanceETotal lengthFCrown toback lengthGHIJHolding surface dia.KTip angleL58°20'37°05'58°39'37°40'59°20'38°45'59°08'38°25'59°10'38°31'58°28'37°22'240

Finished Bore Spiral Bevel GearsWidthB7 ShapePrecision gradeGear teethPressure angleHelix angleMaterialHeat treatmentJIS B 1704 grade 4Gleason20°35°SCM415Overall Carburizing NOTE 4SpecificationsTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cuttingSecondary Operations55~60HRC—CutBoreNot Possible except the mounting surfaceon B7 shapeNOTE 4: It is possible to perform secondary operations on the mountingsurface of B7 shape dut to masking during carburizing.B4 ShapeDepthKeyway NOTE 1 Threaded hole NOTE 2 Allowable torque (N.m) NOTE 3ShapeWidth×Depth M Thread SizeBending strength Surface durability06 x 2.806 x 2.805 x 2.306 x 2.806 x 2.808 x 3.306 x 2.806 x 2.808 x 3.308 x 3.306 x 2.808 x 3.310 x 3.312 x 3.308 x 3.310 x 3.3—10 x 3.312 x 3.3—14 x 3.814 x 3.8007.0006.5009.0007.5011.0009.0010.0011.0110.0013.0120.0015.0M6M6M5M6M6M8M6M6M8M8M6M8M8M8M8M86-M10M8M86-M10M8M8B4B3B4B3B4B3B4B3B7B3B7B334.39023.46067.95046.350118.30080.68282.900193.000543.600370.800927.400632.500038.38025.59076.83051.23135.1090.080328.000218.70636.80424.601118.000745.00Allowable torque (kgf.m)Bending strength(03.5070)(02.3920)(06.9290)(04.7260)(12.0600)(08.2270)(28.8500)(19.6800)(55.4300)(37.8100)(94.5700)(64.5000)Surface durabilityBacklashNOTE 1: Although the dimensions of the keyway are made to the JIS (Js9) tolerance, there may be somedeviations due to the effects of the heat treatment.NOTE 2: A set screw comes with these products.NOTE 3: The allowable torques shown in the table are the calculated values according to the assumed usageconditions. Please see page 229 for more details.(mm)(003.914) 0.06 ~ 0.270.16MBSA2 -3020R0.26 MBSB2 -3020R(002.609) 0.06 ~ 0.160.150.13MBSA2MBSB2-2030L-2030L(007.835)(005.224)0.07 ~ 0.170.07 ~ 0.170.550.520.270.26MBSA2.5-3020RMBSB2.5-3020RMBSA2.5-2030LMBSB2.5-2030L(013.780) 0.08 ~ 0.181.101.00MBSA3MBSB3-3020R-3020R(009.186) 0.08 ~ 0.180.490.46MBSA3MBSB3-2030L-2030L(033.450) 0.12 ~ 0.272.001.90MBSA4MBSB4-3020R-3020R(022.300) 0.12 ~ 0.271.101.00MBSA4MBSB4-2030L-2030L(064.940) 0.14 ~ 0.34 3.00 MBSA5 -3020R(043.300) 0.14 ~ 2.100.34MBSA5 -2030L2.00 MBSB5 -2030L(114.000) 0.16 ~ 0.36 4.80 MBSA6 -3020R(075.970) 0.16 ~ 3.400.36MBSA6 -2030L3.20 MBSB6 -2030LPitch Angle Gear: 56°19’ Pinion: 33°41’When installing B7 shape (ring type) gear,always secure them onto the mountingbase with taper pins to absorb the rotationalloads. It is dangerous to secure with boltsonly.Weight(kgf)GearCatalogNo.Taper pinBevelGearsMBSẠMBSBMounting base241

ModulesMBSA(B) Finished Bore Spiral Bevel Gears 2~6WidthDepthGear Ratio 2 ■ Modules 2~6B3 ShapeBevelGearsMBSẠMBSBCatalogNo.MBSA2 -4020RMBSB2 -4020RMBSA2 -2040LMBSB2 -2040LMBSA2.5-4020RMBSB2.5-4020RMBSA2.5-2040LMBSB2.5-2040LMBSA3 -4020RMBSB3 -4020RMBSA3 -2040LMBSB3 -2040LMBSA4 -4020RMBSA4 -2040LMBSB4 -2040LMBSA5 -4020RMBSA5 -2040LMBSB5 -2040LMBSA6 -4020RMBSA6 -2040LMBSB6 -2040LDirectionofSpiralRLRLRLRLRLRLModulem2.02.02.52.53.03.04.04.05.05.06.06.0No. ofteethz402040204020402040204020BoreAH7020022015018025028020022030035022025080030035090040045110050055Hub dia.B045035055043065053—070—087—105Pitch dia.C080040100050120060160080200100240120Outside dia.081.06044.20101.29055.12121.57066.03—088.46—109.91—132.0404505505006506008006010007012508015031.8328.1633.3531.0139.8138.9032.0845.3835.2057.1137.8967.8026.0616.0526.2916.2831.5721.5122.5322.1222.9827.4823.6233.01Hub width Length of bore Face width18.0013.7516.0013.2521.0018.25—17.50—21.75—26.2529.027.030.029.035.036.528.043.030.053.532.064.0141417172020272734344040052.70025.39066.99029.97080.28036.56107.63051.25133.97061.95162.56077.11CAUTION: With the exception of B7 type gears, dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and somedifferences will occur due to the corner chamfering of the gear tips.CAUTION: The products which are hardened by carburizing allow no secondary machining, however, the back surface of B7 type gears is masked during the process sothat it is possible to drill and pin on this surface.DMountingdistanceETotal lengthFCrown toback lengthGHIJHolding surface dia.KTip angleL65°40'30°20'65°28'30°07'65°42'29°44'65°29'30°45'64°52'29°30'64°58'29°44'242

Finished Bore Spiral Bevel GearsSpecificationsB7 ShapePrecision gradeGear teethPressure angleHelix angleMaterialHeat treatmentJIS B 1704 grade 4Gleason20°35°SCM415Overall Carburizing NOTE 4Tooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cuttingSecondary Operations55~60HRC—CutBoreNot Possible except the mounting surfaceon B7 shapeNOTE 4: It is possible to perform secondary operations on the mountingsurface of B7 shape dut to masking during carburizing.WidthB4 ShapeDepthKeyway NOTE 1 Threaded hole NOTE 2 Allowable torque (N.m) NOTE 3ShapeWidth×Depth M Thread SizeBending strength Surface durability06 x 2.806 x 2.805 x 2.306 x 2.808 x 3.308 x 3.306 x 2.806 x 2.808 x 3.310 x 3.306 x 2.808 x 3.3—08 x 3.310 x 3.3—12 x 3.314 x 3.8—14 x 3.816 x 4.3009.0007.0008.0007.0011.0009.5110.0009.0120.0011.0140.0014.0M6M6M5M6M8M8M6M6M8M8M6M86-M10M8M86-M10M8M86-M10M08M10B4B3B4B3B4B3B7B3B7B3B7B30059.6300029.8700114.3000057.2800195.1000097.720466.10233.50914.80458.301530.000766.200069.570 (006.0810) (007.0940) 0.06 ~ 0.160034.780 (003.0460) (003.5470) 0.06 ~ 0.160135.100 (011.6600) (013.7800) 0.07 ~ 0.170067.560 (005.8410) (006.8890) 0.07 ~ 0.170232.800 (019.8900) (023.7400) 0.08 ~ 0.180116.400 (009.9650) (011.8700) 0.08 ~ 0.180563.900 (047.5300) (057.5000) 0.12 ~ 0.27281.901117.00558.701921.000 (156.0000) (195.9000) 0.16 ~ 0.36960.500Allowable torque (kgf.m)Bending strengthSurface durabilityBacklash(mm)(023.8100) (028.7500) 0.12 ~ 0.27(093.2800) (113.9000) 0.14 ~ 0.34(046.7300) (056.9700) 0.14 ~ 0.34(078.1300) (097.9400) 0.16 ~ 0.36NOTE 1: Although the dimensions of the keyway are made to the JIS (Js9) tolerance, there may be somedeviations due to the effects of the heat treatment.NOTE 2: A set screw comes with these products.NOTE 3: The allowable torques shown in the table are the calculated values according to the assumed usageconditions. Please see page 229 for more details.Weight(kgf)0.550.530.170.160.960.930.270.251.521.450.550.513.201.101.005.702.102.008.603.503.30CatalogNo.MBSA2 -4020RMBSB2 -4020RMBSA2 -2040LMBSB2 -2040LMBSA2.5-4020RMBSB2.5-4020RMBSA2.5-2040LMBSB2.5-2040LMBSA3 -4020RMBSB3 -4020RMBSA3 -2040LMBSB3 -2040LMBSA4 -4020RMBSA4 -2040LMBSB4 -2040LMBSA5 -4020RMBSA5 -2040LMBSB5 -2040LMBSA6 -4020RMBSA6 -2040LMBSB6 -2040LPitch Angle Gear: 63°26’ Pinion: 26°34’Taper pinBevelGearsMBSẠMBSBWhen installing B7 shape (ring type) gear,always secure them onto the mountingbase with taper pins to absorb the rotationalloads. It is dangerous to secure with boltsonly.GearMounting base243

ModulesMBSA(B) Finished Bore Spiral Bevel Gears 2~6WidthDepthGear Ratio 1.5 ■ Modules 2~6B3 ShapeBevelGearsMBSẠMBSBCatalogNo.MBSA2 -4518RMBSB2 -4518RMBSA2 -1845LMBSB2 -1845LMBSA2.5-4518RMBSB2.5-4518RMBSA2.5-1845LMBSB2.5-1845LMBSA3 -4518RMBSB3 -4518RMBSA3 -1845LMBSB3 -1845LMBSA4 -4518RMBSA4 -1845LMBSB4 -1845LMBSA5 -4518RMBSA5 -1845LMBSB5 -1845LMBSA6 -4518RMBSA6 -1845LMBSB6 -1845LDirectionofSpiralRLRLRLRLRLRLModulem2.02.02.52.53.03.04.04.05.05.06.06.0No. ofteethz451845184518451845184518BoreAH7020025012016025030015020030035020025080028032100035042110045050Hub dia.B483255406548—63—80—95Pitch dia.C090.0036.0112.5045.0135.0054.0180.0072.0225.0090.0270.0108.0Outside dia.D090.79040.42113.49050.35136.24060.69—080.86—101.07—120.5504006005007206008505511006513507516027.6728.5434.9433.1941.6537.8229.7748.0333.3757.3036.9766.7322.9815.8828.7416.8234.5527.51Hub width Length of bore Face widthH I J15.0014.2019.0014.7522.0022.4025.027.531.031.537.018.84 16.30 36.021.25 — 25.021.77 18.20 46.022.82 — 28.024.71 20.50 54.524.19 — 30.063.0141418182121292936364343062.24023.11076.53026.82092.96033.41122.33045.83153.85056.13184.57066.44CAUTION: With the exception of B7 type gears, dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and somedifferences will occur due to the corner chamfering of the gear tips.CAUTION: The products which are hardened by carburizing allow no secondary machining, however, the back surface of B7 type gears is masked during the process sothat it is possible to drill and pin on this surface.MountingdistanceETotal lengthFCrown toback lengthGHolding surface dia.KTip angleL70°29'25°38'69°50'24°43'70°15'25°33'69°47'25°22'69°48'25°22'69°19'24°20'244

Finished Bore Spiral Bevel GearsWidthB7 ShapePrecision gradeGear teethPressure angleHelix angleMaterialHeat treatmentJIS B 1704 grade 4Gleason20°35°SCM415Overall Carburizing NOTE 4SpecificationsTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cuttingSecondary Operations55~60HRC—CutBoreNot Possible except the mounting surfaceon B7 shapeNOTE 4: It is possible to perform secondary operations on the mountingsurface of B7 shape dut to masking during carburizing.B4 ShapeDepthKeyway NOTE 1 Threaded hole NOTE 2 Allowable torque (N.m) NOTE 3ShapeWidth×Depth M Thread SizeBending strength Surface durability6 x 2.88 x 3.34 x 1.85 x 2.38 x 3.38 x 3.35 x 2.36 x 2.88 x 3.310 x 3.36 x 2.88 x 3.3—8 x 3.310 x 3.3—10 x 3.312 x 3.3—14 x 3.814 x 3.8008.0007.0010.0008.0011.0009.0110.0010.0130.0011.0140.0012.0.M6M8M5M5M8M8M5M6M8M8M6M86-M10M8M86-M10M8M86-M10M8M8B4B3B4B3B4B3B7B3B7B3B7B30069.2600027.2000137.8000054.1300233.8000091.8300567.0000222.7001102.0000433.1001861.0000731.2000074.3400029.7300149.6000059.8800256.3000102.6000630.2000252.0001238.0000494.8002147.0000858.900Allowable torque (kgf.m)Bending strength(007.0630)(002.7740)(014.0500)(005.5200)(023.8400)(009.3640)(057.8200)(022.7100)(112.4000)(044.1600)(189.8000)(074.5600)Surface durability(007.5810)(003.0320)(015.2600)(006.1060)(026.1400)(010.4600)(064.2600)(025.7000)(126.2000)(050.4600)(218.9000)(087.5800)Backlash0.06 ~ 0.160.06 ~ 0.160.07 ~ 0.170.07 ~ 0.170.08 ~ 0.180.08 ~ 0.180.12 ~ 0.270.12 ~ 0.270.14 ~ 0.340.14 ~ 0.340.16 ~ 0.360.16 ~ 0.36NOTE 1: Although the dimensions of the keyway are made to the JIS (Js9) tolerance, there may be somedeviations due to the effects of the heat treatment.NOTE 2: A set screw comes with these products.NOTE 3: The allowable torques shown in the table are the calculated values according to the assumed usageconditions. Please see page 229 for more details.(mm)When installing B7 shape (ring type) gear,always secure them onto the mountingbase with taper pins to absorb the rotationalloads. It is dangerous to secure with boltsonly.Weight(kgf)00.4300.5900.1500.1301.1301.0800.2700.2401.9501.9000.4200.3704.0000.9200.8506.9001.7001.6011.0002.7002.50MBSA2 -4518RMBSB2 -4518RMBSA2 -1845LMBSB2 -1845LMBSA2.5-4518RMBSB2.5-4518RMBSA2.5-1845LMBSB2.5-1845LMBSA3 -4518RMBSB3 -4518RMBSA3 -1845LMBSB3 -1845LMBSA4 -4518RMBSA4 -1845LMBSB4 -1845LMBSA5 -4518RMBSA5 -1845LMBSB5 -1845LMBSA6 -4518RMBSA6 -1845LMBSB6 -1845LPitch Angle Gear: 68°12’ Pinion: 21°48’GearCatalogNo.Taper pinBevelGearsMBSẠMBSBMounting base245

ModulesMBSA(B) Finished Bore Spiral Bevel Gears 2~6WidthDepthGear Ratio 3 ■ Modules 2~6B3 ShapeBevelGearsMBSẠMBSBCatalogNo.MBSA2 -4515RMBSB2 -4515RMBSA2 -1545LMBSB2 -1545LMBSA2.5-4515RMBSB2.5-4515RMBSA2.5-1545LMBSB2.5-1545LMBSA3 -4515RMBSB3 -4515RMBSA3 -1545LMBSB3 -1545LMBSA4 -4515RMBSA4 -1545LMBSB4 -1545LDirectionofSpiralRLRLRLRLModulem2.02.02.52.53.03.04.04.0No. ofteethz4515451545154515BoreAH7020022010012022025012015030032018020080022025Hub dia.B482655326538—52Pitch dia.C090.0030.0112.5037.5135.0045.0180.0060.0Outside dia.D090.66034.59113.28043.06136.03052.00—069.24MBSA5 -4515R R 5.0 45 090 — 225.0 — 060 33.57 25.16 — 28.0 35 154.8 73°11'MBSA5 -1545L028L 5.0 15MBSB5 -1545L03265 075.0 086.55 135 56.89 24.43 20.83 54.0 35 .042.64 22°15'MBSA6 -4515R R 6.0 45 110 — 270.0 — 070 38.28 28.05 — 32.0 42 186.12 72°45'MBSA6 -1545L035L 6.0 15.052.37 21°12'MBSB6 -1545L04078 090.0 103.13 160 66.39 27.19 23.00 63.0 42CAUTION: With the exception of B7 type gears, dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and somedifferences will occur due to the corner chamfering of the gear tips.CAUTION: The products which are hardened by carburizing allow no secondary machining, however, the back surface of B7 type gears is masked during the process sothat it is possible to drill and pin on this surface.MountingdistanceE040055045070055085050110Total lengthF30.0123.7832.4330.5139.9438.1228.8547.51Crown toback lengthG25.9910.7727.4214.6834.0521.54Hub width Length of bore Face widthH I J18.0009.3318.0012.8422.0018.6727.022.528.029.035.018.67 16.33 36.522.14 — 25.045.51414171721212828Holding surface dia.K.061.82.016.46.077.83.021.48.092.39.026.18124.30.035.91Tip angleL73°18'21°51'72°51'21°33'73°43'22°27'73°11'22°15'246

Finished Bore Spiral Bevel GearsWidthB7 ShapePrecision gradeGear teethPressure angleHelix angleMaterialHeat treatmentJIS B 1704 grade 4Gleason20°35°SCM415Overall Carburizing NOTE 4SpecificationsTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cuttingSecondary Operations55~60HRC—CutBoreNot Possible except the mounting surfaceon B7 shapeNOTE 4: It is possible to perform secondary operations on the mountingsurface of B7 shape dut to masking during carburizing.B4 ShapeDepthKeyway NOTE 1 Threaded hole NOTE 2 Allowable torque (N.m) NOTE 3ShapeWidth×Depth M Thread SizeBending strength Surface durability06 x 2.806 x 2.8—04 x 1.806 x 2.808 x 3.304 x 1.805 x 2.308 x 3.310 x 3.306 x 2.806 x 2.8—06 x 2.808 x 3.3—08 x 3.310 x 3.3—10 x 3.312 x 3.3009005009007011009110010120011140012M6M6M4M5M6M8M5M5M8M8M6M66-M10M6M86-M10M8M86-M10M8M8B4B3B4B3B4B3B7B3B7B3B7B30067.8000021.7200129.9000041.6200228.8000073.3100542.4000173.8001059.0000339.4001794.0000574.800Allowable torque (kgf.m)Bending strengthSurface durabilityBacklash(mm)0061.260 (006.9140) (006.2470) 0.06 ~ 0.160020.420 (002.2150) (002.0820) 0.06 ~ 0.160118.900 (013.2500) (012.1200) 0.07 ~ 0.170039.630 (004.2440) (004.0410) 0.07 ~ 0.170211.300 (023.3300) (021.5500) 0.08 ~ 0.180070.450 (007.4760) (007.1840) 0.08 ~ 0.180508.000 (055.3100) (051.8000) 0.12 ~ 0.270169.400 (017.7200) (017.2700) 0.12 ~ 0.271002.000 (108.0000) (102.2000) 0.14 ~ 0.340333.900 (034.6100) (034.0500) 0.14 ~ 0.341744.000 (182.9000) (177.8000) 0.16 ~ 0.360581.300 (058.6100) (059.2800) 0.16 ~ 0.36NOTE 1: Although the dimensions of the keyway are made to the JIS (Js9) tolerance, there may be somedeviations due to the effects of the heat treatment.NOTE 2: A set screw comes with these products.NOTE 3: The allowable torques shown in the table are the calculated values according to the assumed usageconditions. Please see page 229 for more details.Weight(kgf)00.6200.6100.0800.0701.0001.0000.1600.1401.8001.7700.2500.2304.0000.6400.6007.3001.2001.1012.0001.9001.80CatalogNo.MBSA2 -4515RMBSB2 -4515RMBSA2 -1545LMBSB2 -1545LMBSA2.5-4515RMBSB2.5-4515RMBSA2.5-1545LMBSB2.5-1545LMBSA3 -4515RMBSB3 -4515RMBSA3 -1545LMBSB3 -1545LMBSA4 -4515RMBSA4 -1545LMBSB4 -1545LMBSA5 -4515RMBSA5 -1545LMBSB5 -1545LMBSA6 -4515RMBSA6 -1545LMBSB6 -1545LPitch Angle Gear: 71°34’ Pinion: 18°26’BevelGearsMBSẠMBSBWhen installing B7 shape (ring type) gear,always secure them onto the mountingbase with taper pins to absorb the rotationalloads. It is dangerous to secure with boltsonly.GearMounting baseTaper pin247

ModulesSBS Spiral Bevel Gears 1~5B3 ShapeB4 ShapeGear Ratio 1.5 ■ Modules 2~5Catalogカタログ 記 号No.SBS2 -3020RSBS2 -2030LSBS2.5-3020RSBS2.5-2030LSBS3 -3020RSBS3 -2030LSBS4 -3020RSBS4 -2030LSBS5 -3020RSBS5 -2030LDirectionofSpiralRL2.0RL2.5RLRLRLModulem3.04.05.0No. ofteethz30203020302030203020Bore NOTE 1AH712101512161620202522Hub dia.B35304540504570609080Pitch dia.C060040075050090060120080150100Outside dia.D061.36043.49077.09054.43092.21065.58122.85087.34153.67109.20MountingdistanceE040045050055055070075090090110Total lengthF26.8024.9633.8630.8835.3440.1747.4948.1758.0861.62Crown toback lengthG21.0216.1626.5618.9826.6626.8637.1432.4542.7538.07Hub widthH15.0011.6718.0014.1717.0020.0025.0023.3324.0028.33Length of boreI23223028313740435056Face widthJ1115172030BevelGearsGear Ratio 2 ■ Modules 1~5SBSSBS1 -4020RSBS1 -2040LSBS1.5-4020RSBS1.5-2040LSBS2 -4020RSBS2 -2040LSBS2.5-4020RSBS2.5-2040LSBS3 -4020RSBS3 -2040LSBS4 -4020RSBS4 -2040LSBS5 -4020RSBS5 -2040LRLRLRLRLRLRLRL1.01.52.02.53.04.05.040204020402040204020402040200806100812121512201620202522025016038025040032050040060050070060100080040020060030080040100050120060160080200100040.52022.08060.75033.08081.00044.10101.27055.20121.48066.07162.0788.5202.54110.4502202803504604506005507506509008012009014015.0213.7324.9325.4532.2734.0439.6543.6145.7650.6353.6966.2455.0268.4812.5208.5220.7516.7726.0021.0231.2726.3036.4731.5242.0742.1242.5442.6108.0007.0015.0014.7518.0018.0020.0022.5024.0027.5028.0035.0026.0035.00121222242732344038474562506306101520222830Gear Ratio 2 ■ Modules 2.5~4SBS2.5-3618R R36 15 55 090 091.29 043 28.38 21.79 13.00SBS2.5-1836L L2.518 12 38 045 050.30 064 34.06 20.32 17.25SBS3 -3618R R 36 20 60 108 109.53 052 34.82 26.53 17.00SBS3 -1836L L3.018 16 46 054 060.28 075 39.78 22.57 19.00SBS4 -3618R R36 20 70 144 145.99 072 48.84 37.99 25.00SBS4 -1836L L4.018 20 60 072 080.19 100 52.51 30.05 25.00CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences willoccur due to the corner chamfering of the gear tips.NOTE1: Due to heat treating, some deformation of the bore may occur. It may be necessary to ream the bore to bring it to the stated dimensions.243230374249162026248

Spiral Bevel GearsSpecificationsPrecision gradeJIS B 1704 grade 4Tooth hardness48~53HRCGear teethGleasonSurface treatmentBlack oxidePressure angleHelix angleMaterial20°35°S45CTooth surface finishDatum reference surfacefor gear cuttingSecondary OperationsCutBorePossible except tooth areasHeat treatmentTeeth induction hardenedB5 Shape*FD has die-forged finish.Holding surface dia.K37.5621.3445.6127.4257.1434.7178.5946.8991.2254.83Tip angleL58°20'37°05'61°01'37°41'59°20'38°45'58°52'38°25'59°19'38°3 1'ShapeB4B3B4B3B4B3B4B3B4B3Allowable torque (N.m) NOTE 2Bending strength015.37010.48031.68021.60052.85036.05115.40078.74253.40172.90Surface durability011.280007.522023.550015.700039.720026.480088.140058.760195.200130.100Allowable torque (kgf.m)Bending strength(01.567)(01.069)(03.230)(02.203)(05.389)(03.676)(11.770)(08.029)(25.840)(17.630)Surface durability(01.150)(00.767)(02.401)(01.601)(04.050)(02.700)(08.988)(05.992)(19.910)(13.270)Backlash(mm)Weight(kgf)Catalog0.06 ~ 0.250.16SBS2 -3020R0.12 SBS2 -2030L0.07 ~ 0.550.17SBS2.5-3020R0.23 SBS2.5-2030L0.08 ~ 0.800.18SBS3 -3020R0.50 SBS3 -2030L0.12 ~ 1.800.27SBS4 -3020R1.10 SBS4 -2030L0.14 ~ 4.400.34SBS5 -3020R2.50 SBS5 -2030LPitch Angle Gear: 56°19’ Pinion: 33°41’No.BevelGears026.58009.17039.64017.28048.46020.92059.26020.53073.78029.63102.3942.8138.94057.8465°20'29°53'65°20'29°58'65°20'29°58'65°15'30°18'65°03'29°50'65°30'30°48'65°26'30°40'B4B3B4B3B4B3B4B3B4B3B4B3B5B3003.008001.507010.900005.458027.790013.930056.360028.230092.540046.370213.20106.80376.00188.40002.222001.111008.220004.110021.320010.660043.740021.870072.590036.290169.6084.8302.40151.20(00.3067)(00.1537)(01.1110)(00.5566)(02.8340)(01.4200)(05.7470)(02.8790)(09.4370)(04.7280)(21.7400)(10.8900)(38.3400)(19.2100)(00.2266)(00.1133)(00.8382)(00.4191)(02.1740)(01.0870)(04.4600)(02.2300)(07.4020)(03.7010)(17.2900)(8.64700)(30.8400)(15.4200)0.03 ~ 0.070.13SBS1 -4020R0.02 SBS1 -2040L0.05 ~ 0.230.15SBS1.5-4020R0.09 SBS1.5-2040L0.06 ~ 0.500.16SBS2 -4020R0.19 SBS2 -2040L0.07 ~ 1.100.17SBS2.5-4020R0.40 SBS2.5-2040L0.08 ~ 1.600.18SBS3 -4020R0.70 SBS3 -2040L0.12 ~ 3.300.27SBS4 -4020R1.50 SBS4 -2040L0.14 ~ 6.000.34SBS5 -4020R2.90 SBS5 -2040LPitch Angle Gear: 63°26’ Pinion: 26°34’SBS57.7425.4368.2728.5991.8739.7465°41'31°11'65°32'30°52'65°21'30°37'B4B3B4B3B4B3041.74020.90073.95037.03172.6086.43029.30014.65052.42026.20124.20062.08(04.256)(02.131)(07.541)(03.776)(17.600)(08.814)(02.988)(01.494)(05.345)(02.672)(12.660)(06.330)NOTE 2: The allowable torques shown in the table are the calculated values according to theassumed usage conditions. Please see page 229 for more details.0.07 ~ 0.750.17SBS2.5-3618R0.30 SBS2.5-1836L0.08 ~ 1.750.18SBS3 -3618R0.50 SBS3 -1836L0.12 ~ 2.700.27SBS4 -3618R1.50 SBS4 -1836LPitch Angle Gear: 63°26’ Pinion: 26°34’249

ModulesSBS Spiral Bevel Gears 1.5~5B3 ShapeB4 ShapeGear Ratio 2.5 ■ Modules 2~5Catalogカタログ 記 号No.SBS2 -4518RSBS2 -1845LSBS2.5-4518RSBS2.5-1845LSBS3 -4518RSBS3 -1845LSBS4 -4518RSBS4 -1845LSBS5 -4518RSBS5 -1845LDirectionofSpiralRLRLRLRLRLModulem2.02.53.04.05.0No. ofteethz45184518451845184518Bore NOTE 1A12101512201625203022Hub dia.B048032055040065048080062100080Pitch dia.C090.0036.0112.5045.0135.0054.0180.0072.0225.0090.0Outside dia.D090.79040.42113.49050.35136.24060.69181.57080.86225.81103.87MountingdistanceE040060050072060085075110090135Total lengthF27.6728.5434.9433.1941.6537.8250.9848.0357.9056.02Crown toback lengthG22.9815.8828.7416.8234.5518.8440.9621.7746.0125.27Hub widthH15.0014.2018.0014.7522.0016.3024.0018.0028.0020.50Length of boreI25.027.531.031.537.036.045.046.051.052.5Face widthJ1418212934BevelGearsGear Ratio 3 ■ Modules 2~5SBSSBS2 -4515RSBS2 -1545LSBS2.5-4515RSBS2.5-1545LSBS3 -4515RSBS3 -1545LSBS4 -4515RSBS4 -1545LSBS5 -4515RSBS5 -1545LRLRLRLRLRL2.02.53.04.05.0451545154515451545151210151220152016302040245030603880509060090.0030.0112.5037.5135.0045.0180.0060.0225.0075.0090.67034.78113.32043.36135.99052.08181.30069.30226.61086.5504006005007505509007011507514530.2929.6638.2538.2740.5944.9850.6254.3750.0566.8926.0115.8032.4719.7333.9823.6841.9526.5539.9234.4317.0014.0022.0017.5020.0021.3324.0023.3320.0030.00262935373544455244651520233035Gear Ratio 4 ■ Modules 1.5~3SBS1.5-6015R R60 12 060 090.0 090.36 032 24.08 21.48 12.00 21.01.5SBS1.5-1560L L15 08 018 022.5 026.09 056 22.95 11.45 10.43 22.512SBS2 -6015R R2.060 15 080 120.0 120.46 042 31.50 27.91 16.00 27.0SBS2 -1560L L15 10 024 030.0 034.68 075 30.94 15.58 14.25 30.016SBS2.5-6015R R2.560 20 100 1500 150.5 053 39.68 35.24 20.00 34.0SBS2.5-1560L L15 12 030 037.5 044.16 094 38.90 19.83 18.06 37.520SBS3 -6015R R3.060 20 120 180.0 180.57 064 47.61 42.64 25.00 41.0SBS3 -1560L L15 15 038 045.0 052.64 112 44.01 22.96 21.12 43.022CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.NOTE1: Due to heat treating, some deformation of the bore may occur. It may be necessary to ream the bore to bring it to the stated dimensions.250

Spiral Bevel GearsSpecificationsPrecision gradeGear teethPressure angleHelix angleMaterialHeat treatmentJIS B 1704 grade 4Gleason20°35°S45CTeeth induction hardenedTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cutting48~53HRCBlack oxideCutBoreSecondary Operations Possible except tooth areasB5 Shape*FD has die-forged finish.Holding surface dia.K062.24023.11076.53026.82092.96033.41122.33045.83156.56056.90Tip angleL70°29'25°38'69°50'24°43'70°15'25°33'69°47'25°22'69°33'25°23'ShapeB4B3B4B3B4B3B4B3B4B3Allowable torque (N.m) NOTE 2Bending strength030.95012.16061.57024.18104.40041.03253.30099.54474.20186.30Surface durability021.850008.741044.000017.600075.360030.150185.200074.100350.300140.100Allowable torque (kgf.m)Bending strength(03.156)(01.240)(06.278)(02.466)(10.650)(04.184)(25.830)(10.150)(48.360)(19.000)Surface durability(02.2280)(00.8913)(04.4870)(01.7950)(07.6850)(03.0740)(18.8900)(07.5560)(35.7200)(14.2900)Backlash(mm)Weight(kgf)Catalog0.06 ~0.660.16SBS2 -4518R0.16 SBS2 -1845L0.07 ~1.270.17SBS2.5-4518R0.29 SBS2.5-1845L0.08 ~2.050.18SBS3 -4518R0.45 SBS3 -1845L0.12 ~4.800.27SBS4 -4518R1.00 SBS4 -1845L0.14 ~8.700.34SBS5 -4518R2.00 SBS5 -1845LPitch Angle Gear: 68°12’ Pinion: 21°48’No.BevelGears059.07019.14072.82020.48088.20028.52118.08032.24152.88048.6473°25'22°50'73°13'22°22'73°18'22°32'73°13'22°19'73°11'22°15'B4B3B4B3B4B3B5B3B5B3031.66010.14064.32020.60108.40034.71253.30081.14473.40151.60018.810006.268038.660012.890065.760021.920155.900051.980294.500098.160(03.228)(01.034)(06.559)(02.101)(11.050)(03.539)(25.830)(08.274)(48.270)(15.460)(01.9180)(00.6392)(03.9420)(01.3140)(06.7060)(02.2350)(15.9000)(05.3010)(30.0300)(10.0100)0.06 ~ 0.160.07 ~ 0.170.08 ~ 0.180.12 ~ 0.270.14 ~ 0.340.700.101.000.171.800.354.000.706.001.40SBS2 -4515RSBS2 -1545LSBS2.5-4515RSBS2.5-1545LSBS3 -4515RSBS3 -1545LSBS4 -4515RSBS4 -1545LSBS5 -4515RSBS5 -1545LPitch Angle Gear: 71°34’ Pinion: 18°26’SBS065.39015.55087.02018.06108.64020.58134.40031.5877°28'16°54'77°02'16°27'77°10'17°56'76°56'17°09'B4B3B4B3B4B3B4B3020.74004.89049.17011.59096.05022.63155.90036.7512.27003.06729.56007.38958.39014.60095.68023.920(02.1150)(00.4986)(05.0140)(01.1820)(09.7940)(02.3080)(15.9000)(03.7480)(01.2510)(00.3128)(03.0140)(00.7535)(05.9540)(01.4890)(09.7570)(02.4390)NOTE 2: The allowable torques shown in the table are the calculated values according to theassumed usage conditions. Please see page 229 for more details.0.05 ~ 0.150.06 ~ 0.160.07 ~ 0.170.08 ~ 0.180.700.041.600.103.240.205.440.35SBS1.5-6015RSBS1.5-1560LSBS2 -6015RSBS2 -1560LSBS2.5-6015RSBS2.5-1560LSBS3 -6015RSBS3 -1560LPitch Angle Gear: 75°58’ Pinion: 14°02’251

ModulesSB Bevel Gears 1.5~6B3 ShapeB4 ShapeGear Ratio 1.5 ■ Modules 1.5~5BevelGearsSBCatalogNo.SB1.5-3020SB1.5-2030SB2 -3020SB2 -2030SB2.5-3020SB2.5-2030SB3 -3020SB3 -2030SB4 -3020SB4 -2030SB5 -3020SB5 -2030SB1.5-3015SB1.5-1530SB2 -3015SB2 -1530SB2.5-3015SB2.5-1530SB3 -3015SB3 -1530SB4 -3015SB4 -1530SB5 -3015SB5 -1530SB6 -3015SB6 -1530Modulem1.52.02.53.04.05.01.52.02.53.04.05.06.0No. ofteeth302030203020302030203020Gear Ratio 2 ■ Modules 1.5~6z3015301530153015301530153015BoreA1008101015121515201525200806100815121612201620202525Hub dia.B3025353045355045706090802516302240305035605070608070Pitch dia.C045030060040075050090060120080150100045.0022.5060.0030.0075.0037.5090.0045.0120.0060.0150.0075.0180.0090.0Outside dia.D046.24033.13061.65044.18077.07055.22092.48066.27123.30088.32154.13110.45045.88026.11061.17034.81076.46043.51091.76052.22122.34069.62152.93087.03183.50104.44MountingdistanceE028033040045050055055070075090090110025032031040040055050070060085075110090125Total lengthF18.5318.6326.8725.0634.2231.0635.5640.4847.7148.5358.4562.1117.8517.2321.6020.5928.7531.8137.3043.8842.4048.7452.5063.6162.6068.50Crown toback lengthG13.9311.5421.2416.3926.5519.2426.8627.0937.4832.7743.1038.4814.6310.4017.1711.2022.7119.0029.2626.8032.3427.4140.4338.0148.5238.60Hub widthH8.008.8315.0011.6718.0012.5017.0020.0025.0023.2324.0028.3309.0007.8810.0008.0015.0015.6318.0022.5020.0022.5025.0031.2528.0030.00Length of boreI16172322302831374043505615.015.518.019.024.029.030.041.036.046.048.058.057.063.0Face widthJ09111517203008111520253035Gear Ratio 2 ■ Modules 2.5~4SB2.5-361836 15 55 090 091.46 043 28.52 21.96 13.00 242.5SB2.5-183618 12 38 045 051.01 064 34.27 20.50 17.25 3216SB3 -36183.036 20 60 108 109.76 052 34.95 26.76 17.00 30SB3 -183618 16 46 054 061.22 075 40.01 22.80 19.00 3720SB4 -36184.036 20 70 144 146.34 072 49.00 38.34 25.00 4226SB4 -183618 20 60 072 081.62 100 52.77 30.41 25.00 49CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.252

Bevel GearsSpecificationsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 3Gleason20°S45CTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cuttingLess than 194HBBlack oxideCutBore— Secondary Operations PossibleB5 Shape (Type SB)*FD has die-forged finish.Holding surface dia.K27.3717.0537.5621.3445.6127.4257.1434.7178.5946.8991.2254.83Tip angleL59°16'38°16'59°16'38°16'59°16'38°16'59°16'38°16'59°16'38°16'59°16'38°16'ShapeB4B3B4B3B4B3B4B3B4B3B4B3Allowable torque (N.m) NOTE 1Bending strength005.817004.037013.060009.066026.930018.690044.930031.180098.160068.110215.400149.500Surface durability00.654100.436401.521001.014003.206002.137005.449003.633012.30008.20127.560018.3800Allowable torque (kgf.m)Bending strength(00.5932)(00.4117)(01.3320)(00.9245)(02.7460)(01.9060)(04.5820)(03.1800)(10.0100)(06.9450)(21.9700)(15.2500)Surface durability(0.0667)(0.0445)(0.1551)(0.1034)(0.3269)(0.2179)(0.5557)(0.3705)(1.2540)(0.8363)(2.8100)(1.8740)BacklashWeightCatalog(mm)(kgf)No.0.05 ~0.130.15SB1.5-30200.06 SB1.5-20300.06 ~0.250.16SB2 -30200.12 SB2 -20300.07 ~0.550.17SB2.5-30200.23 SB2.5-20300.08 ~0.800.18SB3 -30200.50 SB3 -20300.12 ~1.800.27SB4 -30201.10 SB4 -20300.14 ~4.400.34SB5 -30202.50 SB5 -2030Pitch Angle Gear: 56°19’ Pinion: 33°41’BevelGears028.36010.72037.4016.81044.21016.42047.78019.56070.10032.20090.41032.83109.74045.4766°19'31°47'66°19'31°47'66°19'31°47'66°19'31°47'66°19'31°47'66°19'31°47'66°19'31°47'B4B3B4B3B4B3B4B3B4B3B5B3B5B3005.020002.598012.130006.276024.930012.900045.560023.580104.400054.040199.400103.200335.700173.70000.472700.236301.178000.589402.477001.239004.602002.301010.860005.430021.290010.640036.920018.4600(00.5119)(00.2649)(01.2370)(00.6400)(02.5420)(01.3150)(04.6460)(02.4050)(10.6500)(05.5110)(20.3300)(10.5200)(34.2300)(17.7100)(0.0482)(0.0241)(0.1201)(0.0601)(0.2526)(0.1263)(0.4693)(0.2346)(1.1070)(0.5537)(2.1710)(1.0850)(3.7650)(1.8820)0.05 ~0.060.15SB1.5-30150.03 SB1.5-15300.06 ~0.200.16SB2 -30150.06 SB2 -15300.07 ~0.400.17SB2.5-30150.15 SB2.5-15300.08 ~0.800.18SB3 -30150.30 SB3 -15300.12 ~1.600.27SB4 -30150.70 SB4 -15300.14 ~2.700.34SB5 -30151.30 SB5 -15300.16 ~4.800.36SB6 -30151.80 SB6 -1530Pitch Angle Gear: 63°26’ Pinion: 26°34’SB57.7825.4468.2828.5691.8639.7265°50'30°55'65°50'30°55'65°50'30°55'B4B3B4B3B4B3035.93018.07063.66032.03148.60074.7604.076002.038007.34003.67117.69008.847(03.664)(01.843)(06.492)(03.266)(15.150)(07.623)(0.4156)(0.2078)(0.7485)(0.3743)(1.8040)(0.9022)NOTE 1: The allowable torques shown in the table are the calculated values according tothe assumed usage conditions. Please see page 229 for more details.0.07 ~ 0.170.08 ~ 0.180.12 ~ 0.270.750.301.750.502.701.50SB2.5-3618SB2.5-1836SB3 -3618SB3 -1836SB4 -3618SB4 -1836Pitch Angle Gear: 63°26’ Pinion: 26°34’253

ModulesSB.SBY Bevel Gears 1~8B3 ShapeB4 ShapeGear Ratio 2 ■ Modules 1~8BevelGearsSḄSBYCatalogModuleNo. ofteethBoreHub dia.Pitch dia.Outside dia.No.m z AH7 B C D E F G HSB1 -40201.0040 08 025 040 040.59 022 015.07 12.59 08.00SB1 -204020 06 016 020 022.41 028 013.78 08.60 07.00SB1.25-40201.2540 10 032 050 050.73 027 018.54 15.23 10.00SB1.25-204020 08 022 025 028.01 036 018.66 11.75 10.25SB1.5 -40201.5040 10 038 060 060.88 035 025.01 20.88 15.00SB1.5 -204020 08 025 030 033.61 046 025.54 16.90 14.75SB2 -40202.0040 12 040 080 081.17 045 032.37 26.17 18.00SB2 -204020 12 032 040 044.81 060 034.16 21.20 18.00SB2.5 -40202.5040 15 050 100 101.46 055 039.73 31.46 20.00SB2.5 -204020 12 040 050 056.01 075 043.78 26.50 22.50SB3 -40203.0040 20 060 120 121.76 065 045.85 36.76 24.00SB3 -204020 16 050 060 067.22 090 050.81 31.80 27.50SB4 -40204.0040 20 070 160 162.34 080 053.92 42.34 28.00SB4 -204020 20 060 080 089.62 120 066.59 42.41 35.00SB5 -40205.0040 25 100 200 202.93 090 055.33 42.93 26.00SB5 -204020 20 080 100 112.03 140 068.92 43.01 35.00SB6 -40206.0040 25 085 240 243.52 105 065.05 48.52 28.00SB6 -204020 25 090 120 134.44 160 078.16 43.60 32.50SBY8 -40208.0040 35 180 320 324.69 130 075.36 54.69 25.00SBY8 -204020 30 120 160 179.25 210 098.64 54.81 40.00*The blue catalog number signify new items. The holding surface of SBY8-4020 has tapped tooling holes. See page 230 for more details.MountingdistanceTotal lengthCrown toback lengthHub widthLength of boreI1212161722242732354138474562506358706190Face widthJ06081015202228304050Gear Ratio 2.5 ■ Modules 1~5SB1 -45181.0045 08 030 045.00 045.46 023 16.95 14.57 10.00 15.0SB1 -184518 06 015 018.00 020.57 032 16.34 10.02 8.9 15.57SB1.25-45181.2545 10 034 056.25 056.82 026 18.53 15.46 10.00 16.0SB1.25-184518 08 019 022.50 025.72 040 20.66 12.52 11.17 19.59SB1.5 -451845 10 036 067.50 068.18 030 21.10 17.35 10.00 18.01.50SB1.5 -184518 08 023 027.00 030.86 045 21.97 12.02 10.45 21.011SB2 -451845 12 048 090.00 090.91 040 27.91 23.14 15.00 25.02.00SB2 -184518 10 032 036.00 041.15 060 28.69 16.03 14.20 27.514SB2.5 -45182.5045 15 055 112.50 113.64 050 35.06 28.92 18.00 31.0SB2.5 -184518 12 040 045.00 051.44 072 33.31 17.04 14.75 31.518SB3 -451845 20 065 135.00 136.37 060 41.86 34.71 22.00 37.03.00SB3 -184518 16 048 054.00 061.72 085 38.04 19.05 16.30 36.021SB4 -45184.0045 20 080 180.00 181.82 075 51.16 41.28 24.00 45.0SB4 -184518 20 062 072.00 82.3 110 48.28 22.06 18.00 46.029SB5 -45185.0045 25 100 225.00 227.28 090 59.43 47.85 28.00 51.0SB5 -184518 20 080 090.00 102.87 135 55.82 25.07 20.50 52.534CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.254

Bevel GearsSpecificationsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 3Gleason20°S45CTooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cuttingCutBore— Secondary Operations PossibleLess than 194HBBlack oxideB5 Shape (Type SB)*FD has die-forged finish.Holding surface dia.K026.58009.17033.61013.22039.64017.28048.46020.92060.28024.56073.81029.61102.39042.78138.92057.84158.56061.11219.20096.39Face angleL65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'ShapeB4B3B4B3B4B3B4B3B4B3B4B3B4B3B5B3B5B3B4B3Allowable torque (N.m) NOTE 1Bending strength0002.6130001.3160005.3340002.6860009.4670004.7680024.1500012.1600048.9700024.6600080.4100040.5000185.2000093.2700326.8000164.6000599.9000302.0001349 0000679 .000Surface durability000.2932 (000.2665)000.1471 (000.1342)000.6139000.3069001.1120000.5560002.9190001.4590006.0430003.0210010.1200005.0610024.0800012.0400043.8500021.9300083.1900041.6000196.3000098.1000Allowable torque (kgf.m)Bending strength(000.5439)(000.2739)(000.9654)(000.4862)(002.4630)(001.2400)(004.9940)(002.5150)(008.2000)(004.1300)(018.8900)(009.5110)(033.3200)(016.7800)(061.1700)(030.8000)(0137.500)(0069.300)Surface durability(00.0299)(00.0150)(00.0626)(00.0313)(00.1134)(00.0567)(00.2977)(00.1488)(00.6162)(00.3081)(01.0320)(00.5161)(02.4560)(01.2280)(04.4720)(02.2360)(08.4830)(04.2420)(20.2300)(10.0100)Backlash(mm)Weight(kgf)Catalog0.03 ~ 0.13 00.07 SB1 -402000.02 SB1 -20400.04 ~00.140.14SB1.25-402000.05 SB1.25-20400.05 ~00.230.15SB1.5 -402000.09 SB1.5 -20400.06 ~00.500.16SB2 -402000.20 SB2 -20400.07 ~01.100.17SB2.5 -402000.40 SB2.5 -20400.08 ~01.600.18SB3 -402000.70 SB3 -20400.12 ~03.300.27SB4 -402001.50 SB4 -20400.14 ~06.000.34SB5 -402002.90 SB5 -20400.16 ~07.900.36SB6 -402004.10 SB6 -20400.20 ~25.000.45SBY8 -402009.40 SBY8 -2040Pitch Angle Gear: 63°26’ Pinion: 26°34’No.BevelGearsSḄSBY030.73010.31037.86012.16045.00016.51062.24023.11076.53026.82092.96033.41022.33045.83156.5656.970°06'25°31'70°06'25°31'70°06'25°31'70°06'25°31'70°06'25°31'70°06'25°31'70°06'25°31'70°06'25°31'B4B3B4B3B4B3B4B3B4B3B4B3B4B3B4B3003.353001.334006.670002.654011.660004.639026.820010.67053.3621.2290.5136.01219.600087.340411.000163.50000.353000.141200.719800.288301.286000.513903.049001.220006.195002.478010.730004.289026.810010.730051.800020.7200(00.3419)(00.1360)(00.6802)(00.2706)(01.1890)(00.4731)(02.7350)(01.0880)(05.4410)(02.1640)(09.2300)(03.6720)(22.3900)(08.9060)(41.9100)(16.6700)(0.0360)(0.0144)(0.0734)(0.0294)(0.1311)(0.0524)(0.3109)(0.1244)(0.6317)(0.2527)(1.0940)(0.4374)(2.7340)(1.0940)(5.2820)(2.1130)NOTE 1: The allowable torques shown in the table are the calculated values according tothe assumed usage conditions. Please see page 229 for more details.0.03 ~0.110.13SB1 -45180.02 SB1 -18450.04 ~0.170.14SB1.25-45180.04 SB1.25-18450.05 ~0.290.15SB1.5 -45180.06 SB1.5 -18450.06 ~0.660.16SB2 -45180.16 SB2 -18450.07 ~1.270.17SB2.5 -45180.29 SB2.5 -18450.08 ~2.050.18SB3 -45180.45 SB3 -18450.12 ~4.800.27SB4 -45181.00 SB4 -18450.14 ~8.700.34SB5 -45182.00 SB5 -1845Pitch Angle Gear: 68°12’ Pinion: 21°48’255

SB.SBY Bevel Gears ModulesB3 ShapeB4 ShapeGear Ratio 3 ■ Modules 1~8BevelgearsSḄSBYCatalogNo.Module No. of teeth Bore Hub dia. Pitch dia. Outside dia.m z AH7 B C D E F G H I JSB1 -45151.0045 08 030 045.00 045.37 017 011.77 10.06 05.00 009.0SB1 -154515 06 012 015.00 017.67 029 012.51 06.95 06.00 012.006SB1.25-45151.2545 10 034 056.25 056.72 021 014.61 12.33 06.00 012.0SB1.25-154515 08 015 018.75 022.09 036 015.85 08.43 07.25 015.008SB1.5 -45151.5045 10 036 067.50 068.06 028 020.44 17.59 11.00 017.0SB1.5 -154515 08 018 022.50 026.51 047 023.19 13.92 12.50 022.510SB2 -45152.0045 12 040 090.00 090.75 040 030.40 26.12 17.00 026.0SB2 -154515 10 024 030.00 035.35 060 029.80 15.89 14.00 029.015SB2.5 -45152.5045 15 050 112.50 113.43 050 038.35 32.65 22.00 035.0SB2.5 -154515 12 030 037.50 044.18 075 038.41 19.86 17.50 037.020SB3 -45153.0045 20 060 135.00 136.12 055 040.74 34.18 20.00 035.0SB3 -154515 15 038 045.00 053.02 090 045.17 23.84 21.33 043.023SB4 -45154.0045 20 080 180.00 181.50 070 050.79 42.24 24.00 045.0SB4 -154515 16 050 060.00 070.69 115 054.60 26.78 23.33 052.030SB5 -45155.0045 25 090 225.00 226.87 075 050.28 40.30 20.00 044.0SB5 -154515 20 060 075.00 088.37 145 067.19 34.73 30.00 065.035SB6 -45156.0045 30 160 270.00 272.24 100 072.62 58.36 30.00 062.0SB6 -154515 25 070 090.00 106.03 175 089.04 42.67 36.67 086.050SBY8 -45158.0045 35 200 360.00 362.99 125 083.74 69.49 30.00 067.0SBY8 -154515 30 100 120.00 141.39 230 099.93 53.56 46.67 093.050CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.*The blue catalog number signify new items. The holding surface of SB6-4515 and SBY8-4515 have tapped tooling holes. See page 230 for more details.MountingdistanceTotal lengthCrown toback length Hub width Length of bore Face width256

Bevel GearsSpecificationsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 3Gleason20°S45C—Tooth hardnessSurface treatmentTooth surface finishDatum reference surfacefor gear cuttingSecondary Operations PossibleLess than 194HBBlack oxideCutBoreB5 Shape (Type SB)*FD has die-forged finish.Holding surface dia.KTip angleLShapeAllowable torque (N.m) NOTE 1Bending strengthSurface durabilityAllowable torque (kgf.m)Bending strengthSurface durability032.02 73°27' B4 0002.8390 000.2677 (000.2895) (00.0273)010.05 22°17' B3 0000.9797 000.0892 (000.0999) (00.0091)039.63 73°27' B4 0005.8020 000.5609 (000.5916) (00.0572)010.90 22°17' B3 0002.0020 000.1873 (000.2042) (00.0191)046.58 73°27' B4 0010.3100 001.0160 (001.0510) (00.1036)014.75 22°17' B3 0003.5580 000.3383 (000.3628) (00.0345)059.04 73°27' B4 0026.3700 002.6760 (002.6890) (00.2729)019.13 22°17' B3 0009.1040 000.8924 (000.9284) (00.0910)072.84 73°27' B4 0053.5800 005.5500 (005.4640) (00.5659)020.51 22°17' B3 0018.5000 001.8500 (001.8860) (00.1886)088.18 73°27' B4 0090.2300 009.5260 (009.2010) (00.9714)022.53 22°17' B3 0031.1500 003.1750 (003.1760) (00.3238)118.09 73°27' B5 0211.3100 023.0160 (021.5200) (02.3460)039.26 22°17' B3 0072.8300 007.6690 (007.4270) (00.7820)152.88 73°27' B5 0394.3000 044.2900 (040.2100) (04.5160)048.64 22°17' B3 0136.1000 014.7600 (013.8800) (01.5050)169.26 73°27' B4 0751.9000 087.4200 (076.6900) (18.8700)049.77 22°17' B3 0259.2000 039.8500 (026.4300) (04.0640)255.92 73°27' B4 1466.4000 179.2000 (149.5000) (18.2700)061.77 22°17' B3 0506.0000 059.7600 (051.6300) (06.0980)NOTE 1: The allowable torques shown in the table are the calculated values according to theassumed usage conditions. Please see page 229 for more details.Backlash(mm)0.03 ~ 0.130.04 ~ 0.140.05 ~ 0.150.06 ~ 0.160.07 ~ 0.170.08 ~ 0.180.12 ~ 0.270.14 ~ 0.340.16 ~ 0.360.20 ~ 0.45Weight(kgf)00.0900.0100.2000.0200.2500.0500.7000.1001.0000.2001.8000.3504.2500.7006.7001.4017.5002.4035.8005.90CatalogNo.SB1 -4515SB1 -1545SB1.25-4515SB1.25-1545SB1.5 -4515SB1.5 -1545SB2 -4515SB2 -1545SB2.5 -4515SB2.5 -1545SB3 -4515SB3 -1545SB4 -4515SB4 -1545SB5 -4515SB5 -1545SB6 -4515SB6 -1545SBY8 -4515SBY8 -1545Pitch Angle Gear: 71°34’ Pinion :18°26’BevelgearsSḄSBY257

SB.SBY Bevel Gears ModulesB3 ShapeB4 ShapeGear Ratio 4 ■ Modules 1.5~6BevelgearsSḄSBYCatalogNo.SB1.5-6015SB1.5-1560SB2 -6015SB2 -1560SB2.5-6015SB2.5-1560SB3 -6015SB3 -1560SB4Y -6015SB4Y -1560SBY5 -6015SBY5 -1560SBY6 -6015SBY6 -1560Module No. of teeth Bore Hub dia. Pitch dia. Outside dia.m z AH7 B C D E F G H I J1.5601512085018090.0022.5090.41026.6603205624.2023.0121.5811.5212.0010.4321.022.5122.060 15 60 120.0 120.55 042 31.60 28.10 16.00 27.015 10 24 030.0 035.55 075 31.01 15.69 14.25 30.0162.5601520127030150.0037.5150.69044.4405309440.0039.0235.6319.8720.0018.0634.037.5203.0601520158038180.0045.0180.83053.3306411247.9744.1043.1523.0425.0021.1241.043.022460152516085050240060241.10071.1008015059.262.052.2031.4036.0028.7505306032560153025180060300075301.38088.90080185054.01075.0345.2636.7425.0033.1304507340660153525200075360090361.66106.66100220068.16085.1758.3142.0825.0038.1305608245*The blue catalog number signify new items. The holding surface of SBY5-6015 and SBY6-6015 have tapped tooling holes. See page 230 for more details.CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.MountingdistanceTotal lengthCrown toback length Hub width Length of bore Face width258

Bevel GearsSpecificationsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 3Gleason20°S45C—Tooth hardnessSurface treatmentTooth surface finish CutDatum reference surfacefor gear cutting BoreSecondary Operations PossibleLess than 194HBBlack oxideB5 Shape (Type SB)*FD has die-forged finish.Holding surface dia.K065.38015.54087.02018.06108.64020.57134.40031.58174.03036.12218.79049.15267.73054.92Tip angleL77°22'17°02'77°22'17°02'77°22'17°02'77°22'17°02'77°22'17°02'77°22'17°02'77°22'17°02'ShapeB4B3B4B3B4B3B4B3B5B3B4B3B4B3Allowable torque (N.m) NOTE 2Bending strength0017.3200004.4560041.3000010.5700080.1800020.6300130.1000033.5000328.400084.510642.000165.101048.600270.20Surface durability01.750000.437404.295001.068008.536002.134014.150003.5390036.970009.242074.400018.610125.800031.500Allowable torque (kgf.m)Bending strength(001.7660)(000.4544)(004.2110)(001.0780)(008.1760)(002.1040)(013.2700)(003.4160)(033.490)(008.618)(065.460)(016.830)(106.990)(027.520)Surface durability(0.1785)(0.0446)(0.4380)(0.1089)(0.8704)(0.2176)(1.4430)(0.3609)(03.7700)(00.9424)(07.5990)(01.8970)(12.8300)(13.2100)NOTE 2: The allowable torques shown in the table are the calculated values according tothe assumed usage conditions. Please see page 229 for more details.Backlash(mm)Weight(kgf)CatalogNo.0.620.05 ~ 0.15SB1.5-60150.04 SB1.5-15600.06 ~ 1.300.16SB2 -60150.10 SB2 -15600.07 ~ 2.500.17SB2.5-60150.20 SB2.5-15600.08 ~ 4.200.18SB3 -60150.35 SB3 -156006.00.12 ~ 0.27SB4Y -601500.9 SB4Y -15600.14 ~ 17.10.34SBY5 -601501.6 SBY5 -15600.16 ~ 30.00.36SBY6 -601502.9 SBY6 -1560Pitch Angle Gear: 75°58’ Pinion: 14°02’BevelgearsSḄSBY259

SB Bevel Gears & Pinion shafts ModulesB8 ShapeScrewGear Ratio 5 ■ Modules 1.5~3CatalogNo.Module No. of teeth Bore Hub dia. Pitch dia. Outside dia.AH7(Bore)m z Ah7(Shaft) B C D E F G H I JSB1.5-60121.560 12.00 50 090 090.33 030 023.89 21.82 12.82 21.00SB1.5-126012 12.20 15 018 022.24 050 097.06 05.42 04.72 17.0612SB2 -60122.560 15.00 60 120 120.43 040 031.85 29.09 16.09 27.00SB2 -126012 15.20 20 024 029.65 066 117.08 06.56 05.60 22.0816SB2.5-60122.560 20.00 70 150 150.54 050 039.81 36.36 20.00 34.00SB2.5-126012 20.20 25 030 037.06 083 143.10 08.70 07.50 28.1020SB3 -60123.560 20.00 80 180 180.65 060 047.43 43.64 25.00 41.00SB3 -126012 25.25 30 036 044.48 100 172.19 10.85 09.40 32.1922CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.MountingdistanceTotal lengthCrown toback length Hub width Length of bore Face widthBevelgearsSB260

Bevel Gears & Pinion ShaftsSpecificationsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 3Gleason20°S45CThermal refined (pinion only) NOTE 1Tooth hardnessSurface treatmentLess than 194HB(pinion are less than 225~260HB)—Tooth surface finish CutDatum reference surfacefor gear cutting Bore except shaft for pinionSecondary Operations PossibleNOTE 1: The pinion is thermaly with refinined in order to increase stiffness.B4 ShapeHolding surface dia. Tip angle Shaft lengthAllowable torque (N.m) NOTE 2 Allowable torque (kgf.m) BacklashWeightCatalogScrew ShapeK L MBending strength Surface durability Bending strength Surface durability(mm)(kgf)No.065.52—086.96—108.80—134.73—80°05'14°22'80°05'14°22'80°05'14°22'80°05'14°22'—080—095—115—140—M5—M6—M8—M8B4B8B4B8B4B8B4B811.98002.07128.41004.90955.48009.58990.09015.57001.9070 (1.2220)00.3815 (0.2112)04.597000.919909.084001.817014.900002.9780(2.8970)(0.5006)(5.6570)(0.9778)(9.1870)(1.5880)NOTE 2: The allowable torques shown in the table are the calculated values according to theassumed usage conditions. Please see page 229 for more details.(0.1945)(0.0389)(0.4688)(0.0938)(0.9263)(0.1853)(1.5190)(0.3037)0.05 ~ 0.420.15SB1.5-60120.10 SB1.5-12600.06 ~ 1.300.16SB2 -60120.20 SB2 -12600.07 ~ 2.500.17SB2.5-60120.41 SB2.5-12600.08 ~ 4.200.18SB3 -60120.75 SB3 -1260Pitch Angle Gear: 78°41’ Pinion: 11°19’BevelgearsSB261

SUB Stainless Steel Bevel Gears ModulesGear Ratio 1.5 ■ Modules 1.5~3B3 ShapeCatalogNo.SUB1.5-3020SUB1.5-2030SUB2 -3020SUB2 -2030SUB2.5-3020SUB2.5-2030SUB3 -3020SUB3 -2030Module No. of teeth Bore Hub dia. Pitch dia. Outside dia.1.52.02.53.0302030203020302010081010151215153025353545406050453060407550906046.2433.1361.6544.1877.0755.2292.4866.27Mountingdistance2833404550555570Total length18.5318.6326.8725.0634.2231.0635.5640.48Crown toback length Hub width Length of bore Face widthm z AH7 B C D E F G H I J13.9311.5421.2416.3926.5519.2426.8627.0908.0008.8315.0013.3318.0014.1617.0021.6616172322302831379111517BevelgearsSGear Ratio 2 ■ Modules 1.5~3SUB1.5-40201.540SUB1.5-204020SUB2 -40202.040SUB2 -204020SUB2.5-40202.540SUB2.5-204020SUB3 -40203.040SUB3 -204020UB26210081212151220163825503260407050060030080040100050120060060.88033.61081.17044.81101.46056.02121.76067.22354645605575659025.0125.5432.3734.1639.7343.7845.8550.8120.8816.9026.1721.2531.4626.5036.7631.8015.0014.7518.0018.0020.0022.5024.0027.50222427323541384710152022Gear Ratio 3 ■ Modules 1.5~3SUB1.5-451545 10 36 067.5 068.06 28 20.44 17.59 11.00 17.01.5SUB1.5-154515 08 18 022.5 026.51 47 23.19 13.92 12.50 22.510SUB2 -451545 12 60 090.0 090.75 40 30.40 26.12 17.00 26.02.0SUB2 -154515 10 24 030.0 035.35 60 29.80 15.89 14.00 29.015SUB2.5-451545 15 60 112.5 113.43 50 38.35 32.65 22.00 35.02.5SUB2.5-154515 12 30 037.5 044.18 75 38.40 19.86 17.50 37.020SUB3 -451545 20 80 135.0 136.12 55 40.74 34.18 20.00 35.03.0SUB3 -154515 15 38 045.0 053.02 90 45.17 23.84 21.33 43.023CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.

Stainless Steel Bevel GearsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 3GleasonSpecificationsTooth hardnessSurface treatment*Available on special order: Same gear made from SUS304.Less than 187HB20°Tooth surface finish CutSUS303Datum reference surfacefor gear cutting Bore— Secondary Operations Possible—B4 ShapeHolding surface dia.K27.3717.0537.5621.3445.6127.4257.1434.71Tip angleL59°16'38°16'59°16'38°16'59°16'38°16'59°16'38°16'ShapeB4B3B4B3B4B3B4B3Allowable torque (N.m) NOTE 1Bending strength3.21502.23107.22005.01014.89010.33024.83017.230Surface durability0.46480.30991.08100.72082.27701.51803.87202.5810Allowable torque (kgf.m)Bending strength(0.3278))(0.2275)(0.7362)(0.5109)(1.5180)(1.0530)(2.5320)(1.7570)Surface durability(0.0474)(0.0316)(0.1102)(0.0735)(0.2322)(0.1548)(0.3948)(0.2632)BacklashWeightCatalog(mm)(kgf)No.0.05 ~ 0.120.15SUB1.5-30200.06 SUB1.5-20300.06 ~ 0.260.16SUB2 -30200.16 SUB2 -20300.07 ~ 0.550.17SUB2.5-30200.28 SUB2.5-20300.08 ~ 0.950.18SUB3 -30200.55 SUB3 -2030Pitch Angle Gear: 56°19’ Pinion: 33°41’39.6417.2848.4620.9260.2824.5673.8129.6165°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'B4B3B4B3B4B3B4B305.23202.63513.35006.72127.07013.63044.44022.3800.78940.39522.07401.03704.29202.14707.19103.5950(0.5335)(0.2687)(1.3610)(0.6854)(2.7600)(1.3900)(4.5320)(2.2820)(0.0805)(0.0403)(0.2115)(0.1057)(0.4377)(0.2189)(0.7333)(0.3666)0.05 ~ 0.270.15SUB1.5-40200.09 SUB1.5-20400.06 ~ 0.620.16SUB2 -40200.20 SUB2 -20400.07 ~ 1.230.17SUB2.5-40200.40 SUB2.5-20400.08 ~ 1.900.18SUB3 -40200.70 SUB3 -2040Pitch Angle Gear: 63°26’ Pinion: 26°34’BevelgearsSUB46.5814.7559.0419.1372.8420.5188.1822.5373°27'22°17'73°27'22°17'73°27'22°17'73°27'22°17'B4B3B4B3B4B3B4B305.69701.96614.57005.03229.61010.22049.87017.2100.72180.24031.90100.63353.94201.31406.76802.2560(0.5809)(0.2005)(1.4860)(0.5131)(3.0190)(1.0420)(5.0850)(1.7550)(0.7360)(0.0245)(0.1938)(0.0646)(0.4020)(0.1340)(0.6901)(0.2300)NOTE 1: The allowable torques shown in the table are the calculated values according tothe assumed usage conditions. Please see page 229 for more details.0.05 ~ 0.250.15SUB1.5-45150.04 SUB1.5-15450.06 ~ 0.810.16SUB2 -45150.10 SUB2 -15450.07 ~ 1.300.17SUB2.5-45150.20 SUB2.5-15450.08 ~ 2.300.18SUB3 -45150.35 SUB3 -1545Pitch Angle Gear: 71°34’ Pinion: 18°26’263

PB Plastic Bevel Gears ModulesGear Ratio 1.5 ■ Modules 1.5~3B3 ShapeCatalogNo.PB1.5-3020PB1.5-2030PB2 -3020PB2 -2030PB2.5-3020PB2.5-2030PB3 -3020PB3 -2030Module No. of teeth Bore NOTE 1 Hub dia. Pitch dia. Outside dia.1.52.02.53.0302030203020302010081010151215153025353545406050453060407550906046.2433.1361.6544.1877.0755.2292.4866.27Mountingdistance2833404550555570Total length18.5318.6326.8725.0634.2231.0635.5640.48Crown toback length Hub width Length of bore Face widthm z A B C D E F G H I J13.9311.5421.2416.3926.5519.2426.8627.0908.0008.8315.0013.3318.0014.1617.0021.66161723223028313709111517BevelgearsPBGear Ratio 2 ■ Modules 1~3PB1 -4020PB1 -2040PB1.25-4020PB1.25-2040PB1.5 -4020PB1.5 -2040PB2 -4020PB2 -2040PB2.5 -4020PB2.5 -2040PB3 -4020PB3 -20401.001.251.502.002.503.00402040204020402040204020080610081008121215122016251632223825403250406050040020050025060030080040100050120060040.59022.41050.73028.01060.88033.61081.17044.81101.47056.01121.76067.2222282736354645605575659015.0713.7818.5418.6625.0125.5432.3734.1639.7343.7845.8550.8112.598.615.2311.7520.8816.9026.1721.2031.4726.5036.7631.8008.0007.0010.0010.2515.0014.7518.0018.0020.0022.5024.0027.50121216172224273235413847060810152022Gear Ratio 3 ■ Modules 1.5~3PB1.5-451545 10 40 067.5 068.06 28 20.44 17.59 11.00 17.01.5PB1.5-154515 08 18 022.5 026.51 47 23.19 13.92 12.50 22.510PB2 -451545 12 60 090.0 090.75 40 30.40 26.12 17.00 26.02.015PB2 -154515 10 24 030.0 035.35 60 29.80 15.89 14.00 29.0PB2.5-45152.545 15 60 112.5 113.43 50 38.35 32.65 22.00 35.020PB2.5-154515 12 30 037.5 044.18 75 38.41 19.86 17.50 37.0PB3 -451545 20 80 135.0 136.12 55 40.74 34.18 20.00 35.03.023PB3 -154515 15 38 045.0 053.02 90 45.17 23.84 21.33 43.0CAUTION: Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the cornerchamfering of the gear tips.NOTE1: The bore tolerance at the time of production is H8. Significant variations in temperature or humidity can cause dimensional changes in plastic gears (MC Nylon).Please see page 32 for more details.264

Plastic Bevel GearsSpecificationsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 4GleasonTooth hardnessSurface treatment115~120HRR20°Tooth surface finish CutMC901Datum reference surfacefor gear cutting Bore— Secondary Operations Possible—B4 ShapeHolding surface dia.K27.3717.0537.5621.3445.6127.4257.1434.71Tip angleL59°16'38°16'59°16'38°16'59°16'38°16'59°16'38°16'ShapeB4B3B4B3B4B3B4B3Allowable torque (N.m) NOTE 2Bending strength01.337000.726703.076001.673006.189003.366010.490005.7070Surface durabilityAllowable torque (kgf.m)Bending strengthSurface durability—(0.1363)(0.0741)——(0.3137)(0.1706)——(0.6311)(0.3432)——(1.0700)(0.5820)—BacklashWeightCatalog(mm)(kgf)No.0.10 ~ 0180.20PB1.5-3020009 PB1.5-20300.11 ~ 0390.21PB2 -3020023 PB2 -20300.12 ~ 0820.22PB2.5-3020040 PB2.5-20300.13 ~ 1400.23PB3 -3020081 PB3 -2030Pitch Angle Gear: 56°19’ Pinion: 33°41’26.5809.1733.6113.2239.6417.2848.4620.9260.2824.5673.8129.6165°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'65°36'30°29'B4B3B4B3B4B3B4B3B4B3B4B300.641300.240301.290000.484402.266000.850205.597002.101011.120004.173018.760007.0420—(0.0654)(0.0245)——(0.1315)(0.0494)——(0.2311)(0.0867)——(0.5707)(0.2142)——(1.1340)(0.4255)——(1.9130)(0.7181)—0.08 ~ 0100.18PB1 -4020003 PB1 -20400.09 ~ 0200.19PB1.25-4020007 PB1.25-20400.10 ~ 0340.20PB1.5 -4020013 PB1.5 -20400.11 ~ 0700.21PB2 -4020030 PB2 -20400.12 ~ 1600.22PB2.5 -4020060 PB2.5 -20400.13 ~ 2400.23PB3 -4020100 PB3 -2040Pitch Angle Gear: 63°26’ Pinion: 26°34’BevelgearsPB46.58 73°27' B4 02.7360(0.2790)— —040 PB1.5-451514.75 22°17' B3 00.5874(0.0559)0.10~0.20006 PB1.5-154559.04 73°27' B4 06.7980(0.6932)— —12019.13B30.11~0.21PB2 -451522°17' 01.4600(0.1489)013 PB2 -154572.84 73°27' B4 13.5500(1.3820)— —20020.51B30.12~0.22PB2.5-451522°17' 02.9110(0.2968)027 PB2.5-154588.18 73°27' B4 23.1100(2.3570)— —35022.54B30.13~0.23PB3 -451522°17' 04.9640(0.5062)050 PB3 -1545NOTE 2: The allowable torques shown in the table are the calculated values using the Lewis formula. Pitch Angle Gear: 71°34’ Pinion: 18°26’265

DB Injection Molded Bevel Gears ModulesGear Ratio 2 ■ Modules 0.5~1B1 ShapeCatalogNo.Module No. of teeth Bore NOTE 1 Hub dia. Pitch dia. Outside dia.m z A B C D E F G H I JDB0.5-40200.540 4 12 20 20.29 12 08.33 07.29 4 07.00DB0.5-204020 3 08 10 11.20 16 08.46 06.30 4 08.462.5DB0.8-402040 5 15 32 32.47 18 11.91 10.47 6 10.000.8DB0.8-204020 4 12 16 17.92 24 11.50 08.48 5 11.503.5DB1 -40201.040 6 18 40 40.59 22 14.45 12.58 7 12.00DB1 -204020 5 15 20 22.40 30 14.49 10.60 7 14.494.5NOTE1: The bore tolerance is generally –0.05 to –0.1 but may be + value at the central portion of the hole. Re-machining the bore is not recommended since reworkingmaterial may expose voids.MountingdistanceTotal lengthCrown toback length Hub width Length of bore Face widthBevelgearsBB Sintered Metal BushingsThe table shows a series of standard metal bushings that can bepressed into standard injection molded gears. They can be used asbearing metal on idler gears or to reduce the bore of the gears.(unit: mm)CatalogNo.I.D. of bushingd +0.020O.D. of bushingLengthD +0.02-0.01 L 0-0.3DḄBB266Products that can use the bushingBB30507 3 5 07 DS0.5, DM0.8, DB0.8BB30608 3 6 08 DS0.5, DS0.8, DM1BB40609 4 6 09 DS0.8, DM1BB40612 4 6 12 DS1, DB1BB50812 5 8 12 DS1BB50814 5 8 14 DS1, DM1.5Material: Oil impregnated sintered bronze.

Injection Molded Bevel GearsSpecificationsPrecision gradeGear teethPressure angleMaterialHeat treatmentJIS B 1704 grade 8GleasonTooth hardnessSurface treatment110~120HRR20°Tooth surface finish Injection moldedDuracon(M90-44)Datum reference surfacefor tooth forming Bore— Secondary Operations Not recommended (may expose voids)—B9 ShapeHolding surface dia.KTip angleLShapeAllowable torque (N.m) NOTE 2Bending strengthSurface durabilityAllowable torque (kgf.m)Bending strengthSurface durabilityBacklash(mm)14.41 65°36' B9 0.3236(0.0330)— ——B10.03 ~ 0 20.09DB0.5-402030°29'0.1216(0.0124)0 1 DB0.5-204024.17 65°36' B9 1.0850(0.1106)— ——B10.03 ~ 0 60.11DB0.8-402030°29'0.4070(0.0415)0 3 DB0.8-204029.94 65°36' B9 1.8870(0.1924)— ——B10.03 ~ 120.13DB1 -402030°29'0.7080(0.0722)0 6 DB1 -2040NOTE 2: The allowable torques shown in the table are the calculated values using the Lewis formula. Pitch Angle Gear: 63°26’ Pinion: 26°34’Weight(kgf)CatalogNo.■ Dimensional tolerance table (unit: mm)Range Tolerancebelow 3±0.203 up to 6 ±0.256 up to 10 ±0.3010 up to 18 ±0.3518 up to 30 ±0.40over 30 ±0.50BevelgearsDḄBB267

NISSEI KSP Ground Spiral Bevel GearsNew ProductsBevelgearsKSP■ Catalog Number of NISSEI Spiral Bevel GearsThe catalog number systems of KSP Ground Spiral Miter Gears differs from othermiter gears.KSP 031 001 G F LHand of Spiral (L)Products Shape(Finished Shape)Surface finish (Ground)■ The Characteristics of KSP Spiral Bevel Gears1. JIS Grade 0, high strength, high precision products2. Superior performance with regard to high speed, low noise, andlow vibration.3. Module range from 1.5 to 64. Three gear ratios: 1, 1.5 and 2■ Products ShapeType F - Finished ShapeType U - Shape to Allow Secondary Operations*The heavy lines in the figure below indicate the masked areasduring carburizingGear Ratio (1)OD of the Larger gear(31mm)Type (Spiral Miter Gears)268

Ground Spiral Bevel Gears■ Regarding the Transmission Capability Table1. The values given in the table are for a service factor of 1.Using the table on theright, please modify the value according to the actual conditions.2. For speed increaser applications (where the gear is the driver and the pinion isdriven), the torque on the pinion is the value in the table multiplied by the speed ratio.(Ex.) For speed ratio of 1/1.5, the torque on the pinion is 1/1.5 times the value given inthe table.Impact from PrimeMoverUniform Load(Motor, Turbine, Hydraulic Motor)Light Impact Load(Multicylinder Engine)Medium Impact Load(Single Cylinder Engine)Impact from Load Side of MachineUniform Load1.001.251.50Medium Impact Load1.251.501.75Heavy Impact Load1.752.002.25■ KSP03100 Transmission Capability Table■ 伝 達 能 力 表ModelKSP031001KSP040001KSP053001KSP066001KSP078001KSP092001KSP105001KSP132001KSP157001KSP184001min -1上 段 : 伝 達 容 量 (kW) 下 段 : 出 力 トルク(N・m)50 100 300600 900 1200 1800 3000※ 上 記 はサービスファクターが1の 場 合 です。P.55のサービスファクターの 表 をご 覧 ください。※ 上 記 は 減 速 で 使 用 する 場 合 の 出 力 トルクです。 増 速 で 使 用 する 場 合 は、P.55の『 伝 達 能 力 表 について』の(2)をご 覧 ください。■ KSP0481.5 Transmission Capability TableLower Output 回 転 Torque 速 度 (RPM) (N.m)0.035 0.068 0.195 0.375 0.548 0.716 1.04 1.656.65 6.51 6.20 5.98 5.82 5.69 5.51 5.250.092 0.179 0.511 0.980 1.43 1.86 2.69 4.2517.6 17.2 16.3 15.6 15.2 14.8 14.3 13.50.211 0.412 1.17 2.23 3.25 4.22 6.08 9.5540.4 39.3 37.3 35.6 34.5 33.6 32.3 30.40.367 0.715 2.02 3.85 5.59 7.26 10.4 16.370.2 68.3 64.4 61.4 59.3 57.8 55.4 52.00.577 1.12 3.16 6.00 8.68 11.2 16.1 25.1109.8 106.9 101.0 95.5 92.2 89.5 85.5 79.80.901 1.75 4.91 9.31 13.5 17.4 24.9 38.6172.6 166.7 156.9 148.1 143.2 138.3 132.4 122.61.44 2.78 7.80 14.7 21.2 27.4 39.1 60.3274.6 265.8 248.1 234.4 225.6 218.7 207.9 192.22.33 4.50 12.6 23.6 34.0 43.7 62.0 95.0445.2 430.5 400.1 376.6 360.9 348.1 329.5 302.03.68 7.10 19.7 37.0 53.0 68.1 96.2 146704.1 678.6 628.6 589.4 562.9 542.3 510.9 466.85.31 10.2 28.3 52.8 75.5 96.8 136 2061010 976.7 901.2 841.4 801.2 770.8 722.8 656.1■ 伝 達 能 力 表 上 段 : 伝 達 容 量 (kw) 下 段 : 出 力 トルク(N・m) ピニオン 回 転 速 度 (RPM)Upper Transmission Capability(kw) Lower Output Torque (N.m)ModelKSP0481・5KSP0611・5KSP0741・5KSP0901・5KSP1051・5KSP1241・5KSP1411・5KSP1631・5KSP1811・5min -150 100 300 600 900 1200 1800 30000.077 0.151 0.432 0.830 1.21 1.58 2.29 3.6422.2 21.6 20.6 19.8 19.3 18.9 18.2 17.40.159 0.309 0.882 1.69 2.46 3.21 4.64 7.3345.4 44.3 42.2 40.4 39.2 38.3 37.0 35.00.277 0.540 1.53 2.93 4.27 5.55 8.00 12.679.4 77.4 73.4 70.1 68.0 66.3 63.7 60.10.466 0.908 2.57 4.90 7.12 9.24 13.3 20.8133.4 130.4 122.6 116.7 113.8 110.8 105.9 99.00.700 1.36 3.84 7.31 10.6 13.7 19.7 30.7201.0 195.2 183.4 174.6 168.7 163.8 156.9 147.11.03 2.00 5.63 10.7 15.5 20.0 28.6 44.5295.2 286.4 268.7 255.0 246.1 239.3 227.5 212.81.56 3.03 8.51 16.1 23.2 30.1 42.9 66.4448.2 434.4 406.0 384.4 370.7 358.9 341.3 317.72.27 4.39 12.3 23.2 33.4 43.1 61.4 94.6650.2 628.6 587.4 554.1 532.5 514.8 489.4 452.12.92 5.64 15.8 29.7 42.7 55.1 78.3 120836.5 809.0 754.1 710.0 680.6 658.0 623.7 574.7※ 上 記 はサービスファクターが1の 場 合 です。P.55のサービスファクターの 表 をご 覧 ください。※ 上 記 は 減 速 で 使 用 する 場 合 の 出 力 トルクです。 増 速 で 使 用 する 場 合 は、P.55の『 伝 達 能 力 表 について』の(2)をご 覧 ください。■ KSP039002 Transmission Capability Table■ 伝 達 能 力 表 上 段 : 伝 達 容 量 (kw) 下 段 : 出 力 トルク(N・m) ピニオン 回 転 速 度 (RPM) Upper Transmission Capability(kw) Lower Output Torque (N.m)ModelKSP039002KSP056002KSP075002KSP096002KSP119002KSP145002KSP172002min -1Upper Transmission Capability (kw)50 100 300 600 900 1200 1800 30000.025 0.049 0.142 0.275 0.404 0.528 0.770 1.239.63 9.45 9.07 8.76 8.57 8.41 8.17 7.830.075 0.147 0.423 0.814 1.19 1.55 2.26 3.5928.8 28.1 27.0 26.0 25.3 24.8 23.9 22.80.185 0.361 1.03 1.98 2.89 3.76 5.45 8.6170.7 69.0 65.7 63.1 61.3 59.9 57.9 54.80.364 0.710 2.02 3.86 5.62 7.31 10.5 16.6139.3 135.3 128.5 122.6 119.6 116.7 111.8 105.90.649 1.26 3.58 6.82 9.90 12.9 18.5 29.0248.1 241.2 227.5 217.7 209.9 205.0 196.1 184.41.07 2.08 5.87 11.2 16.2 21.0 30.1 46.9408.9 397.2 373.6 356.0 343.2 333.4 319.7 298.11.78 3.45 9.72 18.4 26.6 34.5 49.3 76.5680.6 660.0 618.8 587.4 565.8 549.2 523.7 487.4※ 上 記 はサービスファクターが1の 場 合 です。P.55のサービスファクターの 表 をご 覧 ください。※ 上 記 は 減 速 で 使 用 する 場 合 の 出 力 トルクです。 増 速 で 使 用 する 場 合 は、P.55の『 伝 達 能 力 表 について』の(2)をご 覧 ください。MiterGearsKSP269

NISSEI KSP Ground Spiral Miter Gears ModulesNew ProductsGear Ratio 1 ■ Type F (Finished Style)A ShapeB Shape1MiterGearsCatalogNo.KSP031001GF LKSP031001GF RKSP040001GF LKSP040001GF RKSP053001GF LKSP053001GF RKSP066001GF LKSP066001GF RKSP078001GF LKSP078001GF RKSP092001GF LKSP092001GF RKSP105001GF LKSP105001GF RKSP132001GF LKSP132001GF RKSP157001GF LKSP157001GF RKSP184001GF LKSP184001GF RDirection ofSpiralLRLRLRLRLRLRLRLRLRLRShape Module No. of teeth Pitch dia. Face widthA 1.5 20 330.5 07BBBBBCCCC2.02.53.03.54.04.55.05.56.0202121222223262830340.0352.5363.0377.0388.0103.5130.0154.0180.0091215182125293438Outside dia.A031040053066078092105132157184Holding surface dia.B16.222.531.133.643.148.650.064.076.084.0BoreCH712141923273032364048Hub dia.D022031038047054063070082092101KSPGear Ratio 1 ■ Type U (Style Allowimg Modifications)A ShapeB ShapeCatalogNo.KSP031001GU LKSP031001GU RKSP040001GU LKSP040001GU RKSP053001GU LKSP053001GU RKSP066001GU LKSP066001GU RKSP078001GU LKSP078001GU RKSP092001GU LKSP092001GU RKSP105001GU LKSP105001GU RKSP132001GU LKSP132001GU RKSP157001GU LKSP157001GU RKSP184001GU LKSP184001GU RDirection ofSpiralLRLRLRLRLRLRLRLRLRLRShape Module No. of teeth Pitch dia. Face widthA 1.5 20 330.0 07BBBBBCCCC2.02.53.03.54.04.55.05.56.0202121222223262830340.5352.5363.0377.0388.0103.5130.0154.0180.0.091215182125293438Outside dia.A031040053066078092105132157184Holding surface dia.B16.222.531.133.643.148.650.064.076.084.0BoreCH710121416202226303240Hub dia.D022031038047054063070082092101270

Ground Spiral Miter GearsSpecificationsPrecision gradeJIS B 1704 grade 0Tooth hardness60~63HRCGear teethGleasonSurface treatmentNonePressure angle20°Shaft angle90°C ShapeHelix angleMaterialHeat treatment35°SCM415(Module 3.5 and above are SCM420)Overall CarburizingTooth surface finishDatum reference surfacefor gear grindingGroundBoreSecondary Operations Not possibleLength of bore Hub width Total length Mounting distanceE F G H13 06 15.0 02514 07 163.5 03020 08 23.0 04025 13 29.5 05027 12 32.0 05732 14 38.0 06635 14 39.0 07241 14 45.5 08847 20 53.5 10551 17 56.5 118Keyway04 x 1.805 x 2.306 x 2.807 x 3.008 x 3.308 x 3.310 x 3.310 x 3.312 x 3.314 x 3.8Allowable torque (kgf.m)NOTE 100.6101.5903.6316.2609.7415.1023.9038.4060.1085.80Backlash(mm)0.05 ~ 0.050.05 ~ 0.050.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0100.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0.10Weight of set(kgf)00.0800.1600.3600.6801.0801.7602.5004.7807.4211.10CatalogNo.KSP031001GF LKSP031001GF RKSP040001GF LKSP040001GF RKSP053001GF LKSP053001GF RKSP066001GF LKSP066001GF RKSP078001GF LKSP078001GF RKSP092001GF LKSP092001GF RKSP105001GF LKSP105001GF RKSP132001GF LKSP132001GF RKSP157001GF LKSP157001GF RKSP184001GF LKSP184001GF RSpecificationsMiterGearsPrecision gradeJIS B 1704 grade 0Tooth hardness60~63HRCGear teethGleasonSurface treatmentNoneKSPPressure angle20°Shaft angle90°C ShapeHelix angleMaterialHeat treatment35°SCM415(Module 3.5 and above are SCM420)Carburized(bore & hubs are masked)Tooth surface finishDatum reference surfacefor gear grindingGroundBoreSecondary Operations Possible where maskedLength of bore Hub width Total length Mounting distance MachinbaleE F G H131420252732354147510607081312141414201715.016.523.029.532.033.039.045.053.556.5025030040050057066072088105118NOTE 1: The allowable torques are obtained by conversion fromthe table on page 269 for 600 min -1 .Max. Bore12162225323840485562Allowable torque (kgf.m)NOTE 100.6101.5903.6306.2609.7415.1023.9038.4060.1085.80271Backlash(mm)0.00 ~ 0.050.05 ~ 0.050.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0100.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0.10Weight of set(kgf)00.0800.1800.4200.7801.1801.9202.6604.9807.8011.58CatalogNo.KSP031001GU LKSP031001GU RKSP040001GU LKSP040001GU RKSP053001GU LKSP053001GU RKSP066001GU LKSP066001GU GKSP078001GU LKSP078001GU RKSP092001GU LKSP092000GU RKSP105001GU LKSP105001GU GKSP132001GU LKSP132001GU RKSP157001GU LKSP157001GU RKSP184001GU LKSP184001GU R

モジュールNISSEI KSP Ground Spiral Bevel Gears ModulesNew ProductsA ShapeB ShapeGear Ratio 1.5 ■ Type F (Finished Style)1CatalogNo.KSP0481.5GF PKSP0481.5GF GKSP0611.5GF PKSP0611.5GF GKSP0741.5GF PKSP0741.5GF GKSP0901.5GF PKSP0901.5GF GKSP1051.5GF PKSP1051.5GF GKSP1241.5GF PKSP1241.5GF GKSP1411.5GF PKSP1411.5GF GKSP1631.5GF PKSP1631.5GF GKSP1811.5GF PKSP1811.5GF GDirection ofSpiralLRLRLRLRLRLRLRLRLRShape Module No. of teeth Pitch dia. Face widthACACACBCBDBDBDBDBD2.002.252.753.003.503.754.254.505.00162418271827203020302233223324362436332.00048.00340.50060.75349.50074.25360.00090.00370.00105.00382.50123.75393.50140.25108.00162.00120.00180.00091215182124283235Outside dia.A034048042061052074063090074105087124099141113163126181Holding surface dia.B17.630.422.436.228.844.534.154.737.853.046.664.052.968.064.676.071.886.0BoreCH7121515202025222725302733303633403645Hub dia.D243030404050445650635669637369827390BevelgearsKSP272A ShapeB ShapeGear Ratio 1.5 ■ Type U (Style Allowing Modifications)CatalogNo.KSP0481.5GU PKSP0481.5GU GKSP0611.5GU PKSP0611.5GU GKSP0741.5GU PKSP0741.5GU GKSP0901.5GU PKSP0901.5GU GKSP1051.5GU PKSP1051.5GU GKSP1241.5GU PKSP1241.5GU GKSP1411.5GU PKSP1411.5GU GKSP1631.5GU PKSP1631.5GU GKSP1811.5GU PKSP1811.5GU GDirection ofSpiralLRLRLRLRLRLRLRLRLRShape Module No. of teeth Pitch dia. Face widthACACACBCBDBDBDBDBD2.002.252.753.003.503.754.254.505.00162418271827203020302233223324362436332.00048.00340.50060.75349.50074.25360.00090.00370.00105.00382.50123.75393.50140.25108.00162.00120.00180.00091215182124283235Outside dia.A034048042061052074063090074105087124099141113163126181Holding surface dia.B17.630.422.436.228.844.534.154.737.853.046.664.052.968.064.676.071.886.0BoreCH7101212141420162020222026223026323038Hub dia.D243030404050445650635669637369827390

Ground Spiral Bevel GearsSpecificationsPrecision gradeJIS B 1704 grade 0Tooth hardness60~63HRCGear teethGleasonSurface treatmentNonePressure angle20°Shaft angle90°C ShapeD ShapeHelix angleMaterialHeat treatment35°SCM415(Module 3.5 and above are SCM420)Overall CarburizingTooth surface finishDatum reference surfacefor gear grindingGroundBoreSecondary Operations Not possibleLength of bore Hub width Total length Mounting distanceE F G H13171720202524292532293532413547414804.307.005.110.005.712.008.013.007.013.007.014.007.017.007.019.010.019.014.519.019.023.522.029.026.533.028.534.033.036.536.043.538.549.545.550.5031030039037046045056053063057074064082074092085105090Keyway04 x 1.805 x 2.305 x 2.306 x 2.806 x 2.807 x 3.006 x 2.808 x 3.307 x 3.008 x 3.308 x 3.310 x 3.308 x 3.310 x 3.310 x 3.312 x 3.310 x 3.314 x 3.8Allowable torque (kgf.m)NOTE 102.0204.1207.1511.917.826.039.256.572.4Backlash(mm)0.00 ~ 0.050.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0100.05 ~ 0.100.05 ~ 0.100.05 ~ 0.10Weight of set(kgf)0.180.340.621.081.522.353.425.206.77CatalogNo.KSP0481.5GF PKSP0481.5GF GKSP0611.5GF PKSP0611.5GF GKSP0741.5GF PKSP0741.5GF GKSP0901.5GF PKSP0901.5GF GKSP1051.5GF PKSP1051.5GF GKSP1241.5GF PKSP1241.5GF GKSP1411.5GF PKSP1411.5GF GKSP1631.5GF PKSP1631.5GF GKSP1811.5GF PKSP1811.5GF GSpecificationsMiterGearsPrecision gradeJIS B 1704 grade 0Tooth hardness60~63HRCGear teethGleasonSurface treatmentNoneKSPPressure angle20°Shaft angle90°C ShapeD ShapeHelix angleMaterialHeat treatment35°SCM415(Module 3.5 and above are SCM420)Carburized(bore & hubs are masked)Tooth surface finishDatum reference surfacefor gear grindingGroundBoreSecondary Operations Possible where maskedLength of bore Hub width Total length Mounting distance MachinableE F G H13171720202524292532293532413547414804.307.005.110.005.712.008.013.007.013.007.014.007.017.007.019.010.019.014.519.019.023.522.029.026.533.028.534.033.036.536.043.538.549.545.550.5031030039037046045056053063057074064082074092085105090Max. Bore—2016272035254228423648425048555560Allowable torque (kgf.m)NOTE 102.0204.1207.1511.917.826.039.256.572.4NOTE1: The allowable torques are obtained by conversion from the table on page 269 for 600 min -1 .273Backlash(mm)0.00 ~ 0.050.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0100.05 ~ 0.100.05 ~ 0.100.05 ~ 0.10Weight of set(kgf)0.190.380.691.181.652.513.615.487.06CatalogNo.KSP0481.5GU PKSP0481.5GU GKSP0611.5GU PKSP0611.5GU GKSP0741.5GU PKSP0741.5GU GKSP0901.5GU PKSP0901.5GU GKSP1051.5GU PKSP1051.5GU GKSP1241.5GU PKSP1241.5GU GKSP1411.5GU PKSP1411.5GU GKSP1631.5GU PKSP1631.5GU GKSP1811.5GU PKSP1811.5GU G

NISSEI KSP Ground Spiral Bevel GearsNew Products9A Shape1B ShapeGear Ratio 2 ■ Type F (Finished Style)CatalogNo.KSP039002GC PKSP039002GF GKSP056002GF PKSP056002GF GKSP075002GF PKSP075002GF GKSP096002GF PKSP096002GF GKSP119002GF PKSP119002GF GKSP145002GF PKSP145002GF GKSP172002GF PKSP172002GF GDirection ofSpiralLRLRLRLRLRLRLRShape Module No. of teeth Pitch dia. Face widthACBCBDBDBDBDBD1.52.02.53.03.54.04.51326142815301632173418361938319.5039.0328.5356.0337.5075.0348.0096.0359.5119.0372.0144.0385.50171.007101418222732Outside dia.A022039030056040075053096065119078145093172Holding surface dia.B10.224.115.335.616.936.023.546.031.154.031.260.044.470.0BoreCH70812101614221727223326363342Hub dia.D1624203030443656446354736979BevelgearsKSPA ShapeB ShapeGear Ratio 2 ■ Type U (Style Allowing Modifications)CatalogNo.KSP039002GU PKSP039002GU GKSP056002GU PKSP056002GU GKSP075002GU PKSP075002GU GKSP096002GU PKSP096002GU GKSP119002GU PKSP119002GU GKSP145002GU PKSP145002GU GKSP172002GU PKSP172002GU GDirection ofSpiralLRLRLRLRLRLRLRShape Module No. of teeth Pitch dia. Face widthACBCBDBDBDBDBD1.52.02.53.03.54.04.51326142815301632173418361938319.5039.00328.0056.5337.5075.0348.0096.0359.5119.03720144.7385.5171.207101418222732Outside dia.A022039030056040075053096065119078145093172Holding surface dia.B10.224.115.335.616.936.023.546.031.154.031.260.044.470.0BoreCH70810081212161220162620302636Hub dia.D1624203030443656446354736979274

Ground Spiral Bevel GearsSpecificationsPrecision gradeGear teethPressure angleHelix angleMaterialHeat treatmentJIS B 1704 grade 0Gleason20°35°SCM415(Module 3.5 and above are SCM420)Overall CarburizingTooth hardnessSurface treatmentShaft angleTooth surface finishDatum reference surfacefor gear grindingSecondary Operations60~63HRCNone90°GroundBoreNot possibleC ShapeD ShapeLength of bore Hub width Total lengthE1413121817241929253428393446F07.607.002.108.004.611.002.012.003.615.003.516004.420.0G14.515.013.020.519.525.521.531.027.535.533.040.538.047.5Mountingdistance Top position KeywayH I(Tap size)28223230443853476755806494755———————(2-M4)04 x 1.803 x 1.405 x 2.305 x 2.306 x 2.805 x 2.308 x 3.306 x 2.810 x 3.308 x 3.310 x 3.310 x 3.312 x 3.3Allowable torque (kgf.m)NOTE 100.89402.6506.4312.522.236.359.9Backlash(mm)0.00 ~ 0.050.05 ~ 0.050.05 ~ 0.100.05 ~ 0.100.05 ~ 0.100.05 ~ 0100.05 ~ 0.10Weight of set(kgf)0.080.210.521.031.722.914.51CatalogNo.KSP039002GC PKSP039002GF GKSP056002GF PKSP056002GF GKSP075002GF PKSP075002GF GKSP096002GF PKSP096002GF GKSP119002GF PKSP119002GF GKSP145002GF PKSP145002GF GKSP172002GF PKSP172002GF GPrecision gradeJIS B 1704 grade 0SpecificationsTooth hardness60~63HRCMiterGearsGear teethGleasonSurface treatmentNoneKSPPressure angle20°Shaft angle90°C ShapeD ShapeHelix angleMaterialHeat treatment35°SCM415(Module 3.5 and above are SCM420)Carburized(bore & hubs are masked)Tooth surface finish GroundDatum reference surfacefor gear grinding BoreSecondary Operations Possible where maskedLength of bore Hub width Total length Mounting distance Machinbale Allowable torque (kgf.m)BacklashE F G HMax. BoreNOTE 1(mm)14 07.6 14.5 28 —13 07.0 15.0 22 1600.894 0.00 ~ 0.051218172402.108.004.611.013.020.519.525.5323044381020142502.6506.430.05 ~ 0.050.05 ~ 0.10192502.003.621.527.553671925293412.015.031.035.54755324012.522.20.05 ~ 0.100.05 ~ 0.102839344603.516004.420.033.040.538.047.5806494753042385036.359.90.05 ~ 0100.05 ~ 0.10NOTE1: The allowable torques are obtained by conversion from the table on page 269 for 600 min -1 .Weight of set(kgf)0.090.230.541.111.813.094.77CatalogNo.KSP039002GU PKSP039002GU GKSP056002GU PKSP056002GU GKSP075002GU PKSP075002GU GKSP096002GU PKSP096002GU GKSP119002GU PKSP119002GU GKSP145002GU PKSP145002GU GKSP172002GU PKSP172002GU G275

NISSEI KSP Ground Spiral Bevel Gears■ Adjusting Tooth Contact< Centering tooth contact >(1)When there is an angular error of the shafts(1)When assembled correctly, the contact will occur inthe middle of the tooth flank.(2)The contact in the face width direction should be inthe center of the face width, but somewhat closer totoe is ideal.When the gears are assembled in to the gearbox andthe backlash is adjusted, adjust the gearbox to obtainthe tooth contact as shown below. Inaccurate assemblywill lead to irregular noise and uneven wear,Toe contactErrorHeelHeel contactErrorBevelgearsToeKSP(2)When the pinion shaft is offset(3) When the mounting distance of the pinion is incorrectHeel contactLow contactHigh contactToe contactHeel contactErrorErrorHigh contactLow contactToe contactHeel contactToe contactHigh contactLow contactErrorErrorHigh contactLow contact276