Renold Clutches & Couplings - casa sueca s.a.

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Rubber Information The rubber blocks and elements used in Renold Hi-Tec Couplings are key elements in the coupling design. Strict quality control is applied in the manufacture, and frequent testing is part of the production process. Rubber-in-Compression These designs use non-bonded components, which allows for many synthetic elastomers to be employed. These elastomers offer considerable advantages over others for specific applications, giving Renold Hi-Tec Couplings a distinctive lead in application engineering in specialised areas. Rubber in Shear These designs use high tear strength, low creep natural rubber developed for diesel engine drives. All rubber in shear couplings are 100% tested to ensure bond/moulding integrity. Rubber Compound Natural Styrene- Neoprene Nitrile Stryene- Butadiene Butadiene Identification label Red Green Yellow White Blue* (F, NM) (SM) (CM) (AM) (S) Resistance to Compression Set Good Good Fair Good Fair Resistance to Flexing Excellent Good Good Good Good Resistance to Cutting Excellent Good Good Good Fair Resistance to Abrasion Excellent Good Good Good Good Resistance to Oxidation Fair Fair Very Good Good Fair Resistance to Oil & Gasoline Poor Poor Good Good Poor Resistance to Acids Good Good Fair Fair Good Resistance to Water Swelling Good Good Good Good Good Service Temp. Maximum; Continuous 80ºC 100ºC 100ºC 120ºC 100ºC Service Temperature Minimum -50ºC -40ºC -30ºC -40ºC -40ºC * High Damping Rubber Block Types DCB PM NM SM CM AM S Renold 40 Renold 40 RB SM/SB Renold 45 Renold 50 Renold 60 Renold 45 Renold 50 Renold 60 Renold 45 Renold 50 NCB Renold A1976/7 A833/7 Renold 60 Renold 50 Renold 60 Renold 50 Renold 60 S12 S19 SPECIAL WB Renold 70 Renold 70 Renold 70 Renold 70 Renold 70 S28 Renold 80 Renold 80 Renold 80 Renold 80 Renold 80 S33 Renold 90 Renold 90 Renold 90 RENOLD Hi-Tec Couplings. Tel: + 44 (0) 1422 255000 Fax: + 44 (0) 1422 320273 E-Mail: sales@hitec.renold.com 92
Damping Characteristics Coupling damping varies directly with torsional stiffness and inversely with frequency for a given rubber grade. This relationship is conventionally described by the dynamic magnifier M, varying with hardness for the various rubber types. M = K Cω Torque = (k + icω) aeiωt + δ δ Deflection = aeiωt This property may also be expressed as the Damping Energy Ratio or Relative Damping, which is the ratio of the damping energy, AD, produced mechanically by the coupling during a vibration cycle and converted into heat energy, to the flexible strain energy Af with respect to the mean position. Where C = Specific Damping (Nms/rad) K = Torsional Stiffness (Nm/rad) ω = Frequency (Rad/s) tan δ = Cω = I K M M δ ψ = Dynamic Magnifier = Phase Angle Rad = Damping Energy Ratio The rubber compound dynamic magnifier values are shown in the table below. Torque Mid Torque Mdm Mid Deflection Af AD Rubber grade M NM 45 15 SM 50 10 SM60 8 SM70 6 SM 80 4 Deflection ψ = AD = 2π Af M RENOLD Hi-Tec Couplings. Tel: + 44 (0) 1422 255000 Fax: + 44 (0) 1422 320273 E-Mail: sales@hitec.renold.com 93
Page 1 and 2:
Couplings Resilient and Soft Start
Page 3:
Contents Page No Company Profile 5
Page 6 and 7:
Flexible and Soft Start Couplings -
Page 8 and 9:
Pictorial Contents Spiderflex Coupl
Page 10 and 11:
Gears and Variable Speed Product Ra
Page 12 and 13:
Selection of Couplings Flexible Cou
Page 14 and 15:
Service Factors and Selection Servi
Page 16 and 17:
Range of Taper Bushes Metric Range
Page 18 and 19:
Spiderflex G H1 H2 H2 Assembled len
Page 20 and 21:
Spider F D A B C C Coupling Power T
Page 22 and 23:
Pinflex E F D B C1 C2 C2 Type B Typ
Page 24 and 25:
Pinflex Brakedrum Couplings G H D B
Page 26 and 27:
Crownpin An established pin/buffer
Page 28 and 29:
Crownpin (continued) Component Spar
Page 30 and 31:
Tyreflex Sizes TY40 to TY60 Sizes T
Page 32 and 33:
Tyreflex (continued) Ordering Code
Page 34 and 35:
Discflex E E D A B Type B C F C Typ
Page 36 and 37:
Chainflex An all metal flexible yet
Page 38 and 39:
Rigid C1 E C2 E C2 E D B A D B D B
Page 40 and 41:
Gearflex - Introduction Piloted Cro
Page 42 and 43: Gearflex DA L1 L2 F1 NORMAL F2 POSI
Page 44 and 45: Gearflex SA L F B1 A1 C1 C2 A2 B2 D
Page 46 and 47: Gearflex GFV B1 A1 C1 F L C2 A2 B2
Page 48 and 49: Hydrastart Soft Start - Fluid Coupl
Page 50 and 51: Operating Principles OUTER COVERS D
Page 52 and 53: ‘Soft’ Starting 600 Fig. 3 500
Page 54 and 55: Hydrastart Selection Chart 1000 800
Page 56 and 57: Standard Available Options Non Dela
Page 58 and 59: Hydrastart Pinflex Coupling - Dimen
Page 60 and 61: Hydrastart Gearflex Coupling - Dime
Page 62 and 63: Renold Hi-Tec Couplings Hi-Tec Coup
Page 64 and 65: RB Flexible Coupling General purpos
Page 66 and 67: RB Shaft to Shaft Rigid half / Flex
Page 68 and 69: RB Standard SAE Flywheel to Shaft 0
Page 70 and 71: RB Standard SAE Flywheel to Shaft w
Page 72 and 73: RB Technical Data 1.1 Diesel Engine
Page 74 and 75: RB Technical Data Coupling Nominal
Page 76 and 77: PM Flexible Coupling Heavy duty ste
Page 78 and 79: PM Shaft to Shaft PM 0.4 to PM 130
Page 80 and 81: PM Mill Motor Couplings Mill motor
Page 82 and 83: PM Technical Data 1.1 Prediction of
Page 84 and 85: PM 180 - PM 6000 PM Technical Data
Page 86 and 87: PM Design Variations The PM couplin
Page 88 and 89: Selection Procedure ● From the co
Page 90 and 91: Selection Examples Example 1 Exampl
Page 94 and 95: Product Range The products comprise
Page 97 and 98: Notes RENOLD Hi-Tec Couplings. Tel:
Page 99 and 100: Worldwide Sales and Services NORWAY
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Renold Clutches & Couplings - casa sueca s.a.

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