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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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24 Items

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  1. Ruland JC26-12-A, Jaw Coupling Hub
    JC26-12-A
    As low as $34.09 $50.00
    Ruland JC26-12-A, 3/4" Jaw Coupling Hub, Aluminum, Clamp Style, 1.625" OD, 0.710" Length
  2. Ruland JC32-12-A, Jaw Coupling Hub
    JC32-12-A
    As low as $55.62 $81.58
    Ruland JC32-12-A, 3/4" Jaw Coupling Hub, Aluminum, Clamp Style, 2.000" OD, 0.820" Length
  3. Ruland JC36-12-A, Jaw Coupling Hub
    JC36-12-A
    As low as $74.61 $109.43
    Ruland JC36-12-A, 3/4" Jaw Coupling Hub, Aluminum, Clamp Style, 2.250" OD, 1.130" Length
  4. Ruland JCC26-12-A, Jaw Coupling Hub
    JCC26-12-A
    As low as $42.65 $62.55
    Ruland JCC26-12-A, 3/4" Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 1.625" OD, 0.710" Length
  5. Ruland JCC32-12-A, Jaw Coupling Hub
    JCC32-12-A
    As low as $66.08 $96.91
    Ruland JCC32-12-A, 3/4" Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 2.000" OD, 0.820" Length
  6. Ruland JCC36-12-A, Jaw Coupling Hub
    JCC36-12-A
    As low as $87.18 $127.87
    Ruland JCC36-12-A, 3/4" Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 2.250" OD, 1.130" Length
  7. Ruland JS26-12-A, Jaw Coupling Hub
    JS26-12-A
    As low as $27.89 $40.90
    Ruland JS26-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
  8. Ruland JS32-12-A, Jaw Coupling Hub
    JS32-12-A
    As low as $48.06 $70.48
    Ruland JS32-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 2.000" OD, 0.820" Length
  9. Ruland JS36-12-A, Jaw Coupling Hub
    JS36-12-A
    As low as $67.78 $99.42
    Ruland JS36-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 2.250" OD, 1.130" Length
  10. Ruland JSC26-12-A, Jaw Coupling Hub
    JSC26-12-A
    As low as $36.48 $53.51
    Ruland JSC26-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 1.625" OD, 0.710" Length
  11. Ruland JSC32-12-A, Jaw Coupling Hub
    JSC32-12-A
    As low as $58.50 $85.81
    Ruland JSC32-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.000" OD, 0.820" Length
  12. Ruland JSC36-12-A, Jaw Coupling Hub
    JSC36-12-A
    As low as $80.35 $117.85
    Ruland JSC36-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.250" OD, 1.130" Length
  13. Ruland MJC25-10-A, Jaw Coupling Hub
    MJC25-10-A
    As low as $18.76 $27.52
    Ruland MJC25-10-A, 10mm Jaw Coupling Hub, Aluminum, Clamp Style, 25.4mm OD, 11.9mm Length
  14. Ruland MJC33-10-A, Jaw Coupling Hub
    MJC33-10-A
    As low as $27.18 $39.86
    Ruland MJC33-10-A, 10mm Jaw Coupling Hub, Aluminum, Clamp Style, 33.3mm OD, 15.0mm Length
  15. Ruland MJC41-10-A, Jaw Coupling Hub
    MJC41-10-A
    As low as $34.09 $50.00
    Ruland MJC41-10-A, 10mm Jaw Coupling Hub, Aluminum, Clamp Style, 41.3mm OD, 18.0mm Length
  16. Ruland MJCC25-10-A, Jaw Coupling Hub
    MJCC25-10-A
    As low as $24.68 $36.19
    Ruland MJCC25-10-A, 10mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 25.4mm OD, 11.9mm Length
  17. Ruland MJCC33-10-A, Jaw Coupling Hub
    MJCC33-10-A
    As low as $34.06 $49.95
    Ruland MJCC33-10-A, 10mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 33.3mm OD, 15.0mm Length
  18. Ruland MJCC41-10-A, Jaw Coupling Hub
    MJCC41-10-A
    As low as $42.65 $62.55
    Ruland MJCC41-10-A, 10mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 41.3mm OD, 18.0mm Length
  19. Ruland MJS25-10-A, Jaw Coupling Hub
    MJS25-10-A
    As low as $16.27 $23.86
    Ruland MJS25-10-A, 10mm Jaw Coupling Hub, Aluminum, Set Screw Style, 25.4mm OD, 11.9mm Length
  20. Ruland MJS33-10-A, Jaw Coupling Hub
    MJS33-10-A
    As low as $23.58 $34.58
    Ruland MJS33-10-A, 10mm Jaw Coupling Hub, Aluminum, Set Screw Style, 33.3mm OD, 15.0mm Length
  21. Ruland MJS41-10-A, Jaw Coupling Hub
    MJS41-10-A
    As low as $27.89 $40.90
    Ruland MJS41-10-A, 10mm Jaw Coupling Hub, Aluminum, Set Screw Style, 41.3mm OD, 18.0mm Length
  22. Ruland MJSC25-10-A, Jaw Coupling Hub
    MJSC25-10-A
    As low as $22.21 $32.57
    Ruland MJSC25-10-A, 10mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 25.4mm OD, 11.9mm Length
  23. Ruland MJSC33-10-A, Jaw Coupling Hub
    MJSC33-10-A
    As low as $30.49 $44.72
    Ruland MJSC33-10-A, 10mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 33.3mm OD, 15.0mm Length
  24. Ruland MJSC41-10-A, Jaw Coupling Hub
    MJSC41-10-A
    As low as $36.48 $53.51
    Ruland MJSC41-10-A, 10mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 41.3mm OD, 18.0mm Length
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