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Jaw Couplings for Medical & Lab Analysis Equipment

Ruland jaw couplings consist of two lightweight aluminum hubs and a center elastomeric element called the spider. Hubs are machined with a proprietary process to produce a curved jaw profile that press fits with the spider allowing for consistent zero-backlash operation. The spider dampens impulse loads to minimize shock to the motor and other sensitive system components such as bearings. This is particularly useful in applications with high acceleration/deceleration curves often found in optical inspection and analytical equipment such as chromatographers. The spider is available in three durometers allowing the designer to balance dampening capabilities with torque, misalignment and torsional stiffness based on the needs of the system.
Zero-backlash jaw couplings are considered fail safe because the spider serves as the wear element – if it fails the jaws of the two hubs interlock for continued power transmission. The application can then be safely shut down for maintenance rather than stopping suddenly. Spiders can be replaced to restore the original performance characteristics of the coupling leading to reduced maintenance costs when compared to other coupling styles that require complete replacement when at the end of their usable life. Bores are available in sizes from 1/8” to 1-1/4” and 3mm to 32mm. The three piece design lets the designer mix and match clamp or set screw hubs with inch, metric, or keyless bores making it easier to tailor the coupling to specific system requirements. Ruland jaw couplings are manufactured in our Marlborough, MA factory under strict control using proprietary processes.

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16 Items

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  1. Ruland MJC25-12-A, Jaw Coupling Hub
    MJC25-12-A
    As low as $18.76 $27.52
    Ruland MJC25-12-A, 12mm Jaw Coupling Hub, Aluminum, Clamp Style, 25.4mm OD, 11.9mm Length
  2. Ruland MJC33-12-A, Jaw Coupling Hub
    MJC33-12-A
    As low as $27.18 $39.86
    Ruland MJC33-12-A, 12mm Jaw Coupling Hub, Aluminum, Clamp Style, 33.3mm OD, 15.0mm Length
  3. Ruland MJC41-12-A, Jaw Coupling Hub
    MJC41-12-A
    As low as $34.09 $50.00
    Ruland MJC41-12-A, 12mm Jaw Coupling Hub, Aluminum, Clamp Style, 41.3mm OD, 18.0mm Length
  4. Ruland MJC51-12-A, Jaw Coupling Hub
    MJC51-12-A
    As low as $55.62 $81.58
    Ruland MJC51-12-A, 12mm Jaw Coupling Hub, Aluminum, Clamp Style, 50.8mm OD, 20.8mm Length
  5. Ruland MJCC25-12-A, Jaw Coupling Hub
    MJCC25-12-A
    As low as $24.68 $36.19
    Ruland MJCC25-12-A, 12mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 25.4mm OD, 11.9mm Length
  6. Ruland MJCC33-12-A, Jaw Coupling Hub
    MJCC33-12-A
    As low as $34.06 $49.95
    Ruland MJCC33-12-A, 12mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 33.3mm OD, 15.0mm Length
  7. Ruland MJCC41-12-A, Jaw Coupling Hub
    MJCC41-12-A
    As low as $42.65 $62.55
    Ruland MJCC41-12-A, 12mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 41.3mm OD, 18.0mm Length
  8. Ruland MJCC51-12-A, Jaw Coupling Hub
    MJCC51-12-A
    As low as $66.08 $96.91
    Ruland MJCC51-12-A, 12mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 50.8mm OD, 20.8mm Length
  9. Ruland MJS25-12-A, Jaw Coupling Hub
    MJS25-12-A
    As low as $16.27 $23.86
    Ruland MJS25-12-A, 12mm Jaw Coupling Hub, Aluminum, Set Screw Style, 25.4mm OD, 11.9mm Length
  10. Ruland MJS33-12-A, Jaw Coupling Hub
    MJS33-12-A
    As low as $23.58 $34.58
    Ruland MJS33-12-A, 12mm Jaw Coupling Hub, Aluminum, Set Screw Style, 33.3mm OD, 15.0mm Length
  11. Ruland MJS41-12-A, Jaw Coupling Hub
    MJS41-12-A
    As low as $27.89 $40.90
    Ruland MJS41-12-A, 12mm Jaw Coupling Hub, Aluminum, Set Screw Style, 41.3mm OD, 18.0mm Length
  12. Ruland MJS51-12-A, Jaw Coupling Hub
    MJS51-12-A
    As low as $48.06 $70.48
    Ruland MJS51-12-A, 12mm Jaw Coupling Hub, Aluminum, Set Screw Style, 50.8mm OD, 20.8mm Length
  13. Ruland MJSC25-12-A, Jaw Coupling Hub
    MJSC25-12-A
    As low as $22.21 $32.57
    Ruland MJSC25-12-A, 12mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 25.4mm OD, 11.9mm Length
  14. Ruland MJSC33-12-A, Jaw Coupling Hub
    MJSC33-12-A
    As low as $30.49 $44.72
    Ruland MJSC33-12-A, 12mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 33.3mm OD, 15.0mm Length
  15. Ruland MJSC41-12-A, Jaw Coupling Hub
    MJSC41-12-A
    As low as $36.48 $53.51
    Ruland MJSC41-12-A, 12mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 41.3mm OD, 18.0mm Length
  16. Ruland MJSC51-12-A, Jaw Coupling Hub
    MJSC51-12-A
    As low as $58.50 $85.81
    Ruland MJSC51-12-A, 12mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 50.8mm OD, 20.8mm Length
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