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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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16 Items

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  1. Ruland MJC33-14-A, Jaw Coupling Hub
    MJC33-14-A
    As low as $27.18 $39.86
    Ruland MJC33-14-A, 14mm Jaw Coupling Hub, Aluminum, Clamp Style, 33.3mm OD, 15.0mm Length
  2. Ruland MJC41-14-A, Jaw Coupling Hub
    MJC41-14-A
    As low as $34.09 $50.00
    Ruland MJC41-14-A, 14mm Jaw Coupling Hub, Aluminum, Clamp Style, 41.3mm OD, 18.0mm Length
  3. Ruland MJC51-14-A, Jaw Coupling Hub
    MJC51-14-A
    As low as $55.62 $81.58
    Ruland MJC51-14-A, 14mm Jaw Coupling Hub, Aluminum, Clamp Style, 50.8mm OD, 20.8mm Length
  4. Ruland MJC57-14-A, Jaw Coupling Hub
    MJC57-14-A
    As low as $74.61 $109.43
    Ruland MJC57-14-A, 14mm Jaw Coupling Hub, Aluminum, Clamp Style, 57.2mm OD, 28.7mm Length
  5. Ruland MJCC33-14-A, Jaw Coupling Hub
    MJCC33-14-A
    As low as $34.06 $49.95
    Ruland MJCC33-14-A, 14mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 33.3mm OD, 15.0mm Length
  6. Ruland MJCC41-14-A, Jaw Coupling Hub
    MJCC41-14-A
    As low as $42.65 $62.55
    Ruland MJCC41-14-A, 14mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 41.3mm OD, 18.0mm Length
  7. Ruland MJCC51-14-A, Jaw Coupling Hub
    MJCC51-14-A
    As low as $66.08 $96.91
    Ruland MJCC51-14-A, 14mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 50.8mm OD, 20.8mm Length
  8. Ruland MJCC57-14-A, Jaw Coupling Hub
    MJCC57-14-A
    As low as $87.18 $127.87
    Ruland MJCC57-14-A, 14mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 57.2mm OD, 28.7mm Length
  9. Ruland MJS33-14-A, Jaw Coupling Hub
    MJS33-14-A
    As low as $23.58 $34.58
    Ruland MJS33-14-A, 14mm Jaw Coupling Hub, Aluminum, Set Screw Style, 33.3mm OD, 15.0mm Length
  10. Ruland MJS41-14-A, Jaw Coupling Hub
    MJS41-14-A
    As low as $27.89 $40.90
    Ruland MJS41-14-A, 14mm Jaw Coupling Hub, Aluminum, Set Screw Style, 41.3mm OD, 18.0mm Length
  11. Ruland MJS51-14-A, Jaw Coupling Hub
    MJS51-14-A
    As low as $48.06 $70.48
    Ruland MJS51-14-A, 14mm Jaw Coupling Hub, Aluminum, Set Screw Style, 50.8mm OD, 20.8mm Length
  12. Ruland MJS57-14-A, Jaw Coupling Hub
    MJS57-14-A
    As low as $67.78 $99.42
    Ruland MJS57-14-A, 14mm Jaw Coupling Hub, Aluminum, Set Screw Style, 57.2mm OD, 28.7mm Length
  13. Ruland MJSC33-14-A, Jaw Coupling Hub
    MJSC33-14-A
    As low as $30.49 $44.72
    Ruland MJSC33-14-A, 14mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 33.3mm OD, 15.0mm Length
  14. Ruland MJSC41-14-A, Jaw Coupling Hub
    MJSC41-14-A
    As low as $36.48 $53.51
    Ruland MJSC41-14-A, 14mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 41.3mm OD, 18.0mm Length
  15. Ruland MJSC51-14-A, Jaw Coupling Hub
    MJSC51-14-A
    As low as $58.50 $85.81
    Ruland MJSC51-14-A, 14mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 50.8mm OD, 20.8mm Length
  16. Ruland MJSC57-14-A, Jaw Coupling Hub
    MJSC57-14-A
    As low as $80.35 $117.85
    Ruland MJSC57-14-A, 14mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 57.2mm OD, 28.7mm Length
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