Standard range - Belting Ware

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Speed correction factor c 3 Table 3 Fatigue correction factor c 6 Calculation optibelt OMEGA HL /HP and optibelt OMEGA Supplementary factors For speed increasing drives, a factor corresponding to the speed ratio is added to the basic service factor c 0. Table 2 Speed ratio Speed ratio correction factor i c 3 1.00–0.80 0.0 0.79–0.57 0.1 0.56–0.40 0.2 0.39–0.28 0.3 0.27 and less 0.4 Operating conditions Fatigue correction factor c 6 Use of tension or 0.2 guide idlers Operating time 16 to 24 hours Only rare/occasional operation – 0.2 With frequent starts and stops or continual reversing operation, the total service factor c 2 chosen should be higher than the ratio between starting torque and nominal torque. If there is a brake on the prime mover the same procedure should apply for the braking torque, if the brake is used frequently. For further questions, please contact the Optibelt Application Engineering Department. Table 4 Minimum adjustment of centre distance ‘y’ for installation of timing belt on timing pulleys without flanges Centre distances [mm] 0.2 Minimum adjustment of centre distance ‘x’ for tensioning of timing belts x = 0.004 · a nom Adjustment for fitting of the timing belt [mm] until 1000 1.8 from 1000 to 1780 2.8 from 1780 to 2540 3.3 from 2540 to 3300 4.1 from 3300 to 4600 5.3 Table 5 Minimum adjustment of centre distance ‘y’ for installation of timing belt on timing pulleys with flanges Pitch [mm] Flange on one timing pulley [mm] 2 6 12 3 8 14 5 14 19 8 22 33 14 36 58 Table 6 Belt length factor c 7 Section 2M Pitch length [mm] c 7 ≤ 190 0.8 > 190 ≤ 260 0.9 > 260 ≤ 400 1.0 > 400 ≤ 600 1.1 > 600 1.2 Section 3M / 3M HP Pitch length [mm] c7 ≤ 190 0.8 > 190 ≤ 260 0.9 > 260 ≤ 400 1.0 > 400 ≤ 600 1.1 > 600 1.2 Section 5M / 5M HP Pitch length [mm] c7 ≤ 440 0.8 > 440 ≤ 555 0.9 > 555 ≤ 800 1.0 > 800 ≤ 1100 1.1 >1100 1.2 Table 7 Teeth in mesh factor c 1 Number of teeth Teeth in mesh factor in mesh c 1 ≥ 6 1.0 5 0.8 4 0.6 3 0.4 2 0.2 Flange on both timing pulleys [mm] Section 8M / 8M HP/HL Pitch length [mm] c7 ≤ 600 0.8 > 600 ≤ 880 0.9 > 880 ≤ 1200 1.0 >1200 ≤ 1760 1.1 >1760 1.2 Section 14M / 14M HP/HL Pitch length [mm] c7 ≤ 1190 0.80 >1190 ≤ 1610 0.90 >1610 ≤ 1890 0.95 >1890 ≤ 2450 1.00 >2450 ≤ 3150 1.05 >3150 1.10 27
Prime mover Electric motor 50 Hz Star/delta start P = 18.5 kW n1 = 2850 min-1 28 Calculation optibelt OMEGA HL/HP and optibelt OMEGA Formulae and calculation example Operating conditions Daily operating time: 12 hours Number of starts/stops: 2 per day Environmental influences: ambient room temperature, no influence from oil, water or dust Centre distance: 400 mm to 450 mm Max. pulley diameter: 200 mm Formulae Calculation example Total service factor c2 = c0 + c3 + c6 c0 from Table 1 page 26 c3 from Table 2 page 27 c6 from Table 3 page 27 Design power PB = P · c2 Timing belt section selection from diagrams 1-3, pages 23 -25 Speed ratio n1 n2 z2 z1 i = = = d w2 d w1 Number of teeth on the timing pulleys z1, dw1 selected from standard <strong>range</strong> of timing pulleys page 51 z2 = z1 · i Observe the minimum diameter requirement! Check the driven speed i = z2 z1 n2 = n1 i Recommended centre distance Recommendation: a > 0.5 (dw1 + dw2) + 15 mm a < 2.0 (dw1 + dw2) c 2 = 1.6 + 0 + 0 = 1.6 c 0 = 1.6 c 3 = 0 c 6 = 0 P B = 18.5 · 1.6 = 29.6 kW Optibelt OMEGA HP Type 8M 2850 i = = 1,557 1830 Driven machine Textile machine P = 15 kW n2 = 1830 min-1 ± 1% Type of load: constant z1 = 36 dw1 = 91.67 mm z2 = 36 · 1.56 = 56.16 z2 = 56 dw2 = 142.60 mm z2 selected from standard <strong>range</strong> pulleys page 51 Requirement z1 ≥ 22 (minimum number of teeth for section 8M) and max. pulley diameter met i = = 1.556 n2 = = 1832 min-1 56 36 2850 1.556 see also Optibelt CAP drive calculation programme software at www.optibelt.com Requirement: 1830 min -1 ± 1% fulfilled a > 0.5 (91.67 + 142.60) + 15 mm = 132.14 mm a < 2.0 (91.67 + 142.60) = 468.54 mm a = 425 mm provisionally selected
Page 1 and 2: NEW OMEGA HL OMEGA 5M HP FOR DRIVES
Page 3 and 4: Produktionsstätten und Vertriebsor
Page 5 and 6: 4 Properties of optibelt OMEGA timi
Page 7 and 8: Construction 6 Top surface Tension
Page 9 and 10: 8 Belt designation Order example: S
Page 11 and 12: Top surface A durable and flexible
Page 13 and 14: Order example: Timing belts: Optibe
Page 15 and 16: Order example: 14 Belt designation
Page 17 and 18: Construction 16 Product description
Page 19 and 20: 18 111 3M 111 37 129 3M 129 43 141
Page 21 and 22: Order example: Timing belts: Optibe
Page 23 and 24: 22 Calculation optibelt OMEGA HL/HP
Page 25 and 26: Diagram 2 Speed of the small timing
Page 27: Total service faktor c 2 26 Calcula
Page 31 and 32: 30 Calculation optibelt OMEGA HL/HP
Page 33 and 34: 32 Speed of the small timing pulley
Page 45 and 46: 44 Number of teeth 10 9.55 8.79 11
Page 47 and 48: 46 Number of teeth Standard timing
Page 49 and 50: 48 optibelt ZRS HTD ® timing pulle
Page 51 and 52: optibelt ZRS HTD ® timing pulleys
Page 59 and 60: Taper bush 58 optibelt ZRS HTD ® t
Page 61 and 62: Taper bush 60 optibelt ZRS HTD ® t
Page 63 and 64: Bore diameter d 2 (mm) Tightening t
Page 65 and 66: Permissible variation in tooth pitc
Page 67 and 68: Flanged pulleys For the guidance of
Page 69 and 70: 68 Design hints Problems - Causes -
Page 71 and 72: Details of the drive: 70
Page 73 and 74: The Optibelt offer is intended for

Standard range - Belting Ware

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