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Zero-Backlash Jaw Couplings for Motors

Ruland zero-backlash jaw couplings have high dampening capabilities and can accommodate all forms of misalignment, making them well suited for applications with high acceleration and deceleration curves that couple a motor with a screw driven actuator or gearbox. Ruland jaw couplings are made up of two aluminum hubs and an elastomeric insert called the spider. They give motor manufacturers and integrators a standard coupling with a high level of customization. Hubs can be easily interchanged between clamp and set screw, with or without keyway and spiders have three durometers to choose from. This flexibility allows designers to specify an outer diameter with a variety of inch and metric bore sizes will match joined components such as lead screws, ball screws, and gearboxes.

Ruland hubs are manufactured with a proprietary curved jaw profile that ensures zero-backlash operation for fine positioning. Designers can select from three different spider durometers, enabling them to balance dampening, torque, and torsional rigidity based on the needs of their application. The spider serves as an inexpensive wear element that restores the coupling’s performance characteristics when replaced, saving maintenance costs when compared to couplings that must be entirely replaced. In the event of failure, the hub tenons will interlock for continued power transmission to allow the system to be shut down safely.

Zero-backlash jaw couplings are manufactured by Ruland with bores sizes ranging 1/8” to 1-1/4” and 3mm to 32mm.

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  1. JC10-2-A
    JC10-2-A
    As low as $14.15 $20.75
    Ruland JC10-2-A, 1/8" Jaw Coupling Hub, Aluminum, Clamp Style, 0.590" OD, 0.300" Length
  2. Ruland JC10-3-A, Jaw Coupling Hub
    JC10-3-A
    As low as $14.15 $20.75
    Ruland JC10-3-A, 3/16" Jaw Coupling Hub, Aluminum, Clamp Style, 0.590" OD, 0.300" Length
  3. Ruland JC10-4-A, Jaw Coupling Hub
    JC10-4-A
    As low as $14.15 $20.75
    Ruland JC10-4-A, 1/4" Jaw Coupling Hub, Aluminum, Clamp Style, 0.590" OD, 0.300" Length
  4. Ruland JC16-4-A, Jaw Coupling Hub
    JC16-4-A
    As low as $18.76 $27.52
    Ruland JC16-4-A, 1/4" Jaw Coupling Hub, Aluminum, Clamp Style, 1.000" OD, 0.467" Length
  5. Ruland JC16-5-A, Jaw Coupling Hub
    JC16-5-A
    As low as $18.76 $27.52
    Ruland JC16-5-A, 5/16" Jaw Coupling Hub, Aluminum, Clamp Style, 1.000" OD, 0.467" Length
  6. Ruland JC16-6-A, Jaw Coupling Hub
    JC16-6-A
    As low as $18.76 $27.52
    Ruland JC16-6-A, 3/8" Jaw Coupling Hub, Aluminum, Clamp Style, 1.000" OD, 0.467" Length
  7. Ruland JC16-8-A, Jaw Coupling Hub
    JC16-8-A
    As low as $18.76 $27.52
    Ruland JC16-8-A, 1/2" Jaw Coupling Hub, Aluminum, Clamp Style, 1.000" OD, 0.467" Length
  8. Ruland JCC16-6-A, Jaw Coupling Hub
    JCC16-6-A
    As low as $24.68 $36.19
    Ruland JCC16-6-A, 3/8" Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 1.000" OD, 0.467" Length
  9. Ruland JCC16-8-A, Jaw Coupling Hub
    JCC16-8-A
    As low as $24.68 $36.19
    Ruland JCC16-8-A, 1/2" Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 1.000" OD, 0.467" Length
  10. Ruland JD10/15-85B, Jaw Coupling Spider
    JD10/15-85B
    As low as $10.46 $15.34
    Ruland JD10/15-85B, Jaw Coupling Spider, 85 Shore A Blue, 0.590" (15.0mm) OD, High Dampening
  11. JD10/15-92Y
    JD10/15-92Y
    As low as $8.47 $12.43
    Ruland JD10/15-92Y, Jaw Coupling Spider, 92 Shore A Yellow, 0.590" (15.0mm) OD, Balance of Torque and Dampening
  12. JD10/15-98R
    JD10/15-98R
    As low as $8.47 $12.43
    Ruland JD10/15-98R, Jaw Coupling Spider, 98 Shore A Red, 0.590" (15.0mm) OD, High Torque
  13. Ruland JD16/25-85B, Jaw Coupling Spider
    JD16/25-85B
    As low as $15.20 $22.29
    Ruland JD16/25-85B, Jaw Coupling Spider, 85 Shore A Blue, 1.000" (25.4mm) OD, High Dampening
  14. JD16/25-92Y
    JD16/25-92Y
    As low as $11.25 $16.51
    Ruland JD16/25-92Y, Jaw Coupling Spider, 92 Shore A Yellow, 1.000" (25.4mm) OD, Balance of Torque and Dampening
  15. Ruland JD16/25-98R, Jaw Coupling Spider
    JD16/25-98R
    As low as $11.25 $16.51
    Ruland JD16/25-98R, Jaw Coupling Spider, 98 Shore A Red, 1.000" (25.4mm) OD, High Torque
  16. Ruland JS10-2-A, Jaw Coupling Hub
    JS10-2-A
    As low as $11.34 $16.64
    Ruland JS10-2-A, 1/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.590" OD, 0.300" Length
  17. Ruland JS10-3-A, Jaw Coupling Hub
    JS10-3-A
    As low as $11.34 $16.64
    Ruland JS10-3-A, 3/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.590" OD, 0.300" Length
  18. Ruland JS10-4-A, Jaw Coupling Hub
    JS10-4-A
    As low as $11.34 $16.64
    Ruland JS10-4-A, 1/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.590" OD, 0.300" Length
  19. Ruland JS16-4-A, Jaw Coupling Hub
    JS16-4-A
    As low as $16.27 $23.86
    Ruland JS16-4-A, 1/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
  20. Ruland JS16-5-A, Jaw Coupling Hub
    JS16-5-A
    As low as $16.27 $23.86
    Ruland JS16-5-A, 5/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
  21. Ruland JS16-6-A, Jaw Coupling Hub
    JS16-6-A
    As low as $16.27 $23.86
    Ruland JS16-6-A, 3/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
  22. Ruland JS16-8-A, Jaw Coupling Hub
    JS16-8-A
    As low as $16.27 $23.86
    Ruland JS16-8-A, 1/2" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
  23. Ruland JSC16-6-A, Jaw Coupling Hub
    JSC16-6-A
    As low as $22.21 $32.57
    Ruland JSC16-6-A, 3/8" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 1.000" OD, 0.467" Length
  24. Ruland JSC16-8-A, Jaw Coupling Hub
    JSC16-8-A
    As low as $22.21 $32.57
    Ruland JSC16-8-A, 1/2" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 1.000" OD, 0.467" Length
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