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Through Bored Flexible Jaw Couplings with Set Screw Fixing Hubs

Dimensions and Order Codes
Coupling Size Coupling Ref ØD L L1 (1) L2 ØB1 max (2) Fasteners Moment of inertia (4) Mass (4) Soft (blue) Element Ref. Medium (white) Element Ref. Hard (red) Element Ref.
Screw Torque (3) Wrench
     mm mm mm mm mm   Nm mm kgm2 x 10-8 kg x 10-3      
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14 802.14 14 22 7 8 6.35 M3 0.94 1.5 18.4 7 804.14 805.14 806.14
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20 802.20 20 30 10 10 9 M3 0.94 1.5 106 17 804.20 805.20 806.20
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30 802.30 30 35 11 13 14 M4 2.27 2 606 51 804.30 805.30 806.30
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40 802.40 40 66 25 16 16 M5 4.62 2.5 4230 108 804.40 805.40 806.40
Table Notes:
  1. Maximum permissible hub penetration.
  2. Hubs can be provided with keyways or 'D' bores.
  3. Maximum recommended tightening torque.
  4. Values apply to complete couplers with max bores.

Materials & Finishes

Hub sizes 14 to 30:
Al Alloy 2024.
Hub size 40:
Cast Aluminium LM9.
Elements
Polyurethane.

Temperature Range
-40°C to +80°C, up to 100°C for short durations.

Performance (AT 20°C WITH BLUE 80 SHORE A SPIDER ELEMENT)
Coupling Size Max compensation Speed max Torsional Backlash Free Torque Torque Nominal (6) Torque Max
Angular Radial Rate (5) Stiffness (5)
   deg mm rpm deg/Nm Nm/rad Nm Nm Nm
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14 2 0.1 40000 6.7 8.5 0.22 0.67 1.34
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20 2 0.15 28000 3.37 17 0.45 1.8 3.6
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30 2 0.2 19000 1.24 71 1 3.95 7.9
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40 2 0.38 14000 0.34 170 2.4 4.85 9.7
Table Notes:
  1. Values apply at 50% peak torque, measured shaft-to-shaft with largest standard bores.
  2. Select a size where nominal torque exceeds application torque x service factor.
Performance (AT 20°C WITH WHITE 92 SHORE A SPIDER ELEMENT)
Coupling Size Max compensation Speed max Torsional Backlash Free Torque Torque Nominal (6) Torque Max
Angular Radial Rate (5) Stiffness (5)
   deg mm rpm deg/Nm Nm/rad Nm Nm Nm
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14 2 0.1 40000 3.9 14.7 0.22 1.12 2.24
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20 2 0.15 28000 2.05 28 0.45 2.93 6
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30 2 0.2 19000 0.4 143 1 7.33 14.6
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40 2 0.38 14000 0.17 344 2.4 9.8 19.6
Table Notes:
  1. Values apply at 50% peak torque, measured shaft-to-shaft with largest standard bores.
  2. Select a size where nominal torque exceeds application torque x service factor.
Performance (AT 20°C WITH RED 98 SHORE A SPIDER ELEMENT)
Coupling Size Max compensation Speed max Torsional Backlash Free Torque Torque Nominal (6) Torque Max
Angular Radial Rate (5) Stiffness (5)
   deg mm rpm deg/Nm Nm/rad Nm Nm Nm
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14 2 0.1 40000 2.29 25 0.22 1.9 3.8
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20 2 0.15 28000 1.22 47 0.45 4.85 9.7
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30 2 0.2 19000 0.25 228 1 12.4 24.8
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40 2 0.38 14000 0.1 573 2.4 16.7 33.4
Table Notes:
  1. Values apply at 50% peak torque, measured shaft-to-shaft with largest standard bores.
  2. Select a size where nominal torque exceeds application torque x service factor.