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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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19 Items

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  1. Ruland JC12-3-A, Jaw Coupling Hub
    JC12-3-A
    As low as $14.50 $21.27
    Ruland JC12-3-A, 3/16" Jaw Coupling Hub, Aluminum, Clamp Style, 0.750" OD, 0.385" Length
  2. Ruland JC12-4-A, Jaw Coupling Hub
    JC12-4-A
    As low as $14.50 $21.27
    Ruland JC12-4-A, 1/4" Jaw Coupling Hub, Aluminum, Clamp Style, 0.750" OD, 0.385" Length
  3. Ruland JC12-5-A, Jaw Coupling Hub
    JC12-5-A
    As low as $14.50 $21.27
    Ruland JC12-5-A, 5/16" Jaw Coupling Hub, Aluminum, Clamp Style, 0.750" OD, 0.385" Length
  4. Ruland JD12/19-85B, Jaw Coupling Spider
    JD12/19-85B
    As low as $13.53 $19.85
    Ruland JD12/19-85B, Jaw Coupling Spider, 85 Shore A Blue, 0.750" (19.1mm) OD, High Dampening
  5. JD12/19-92Y
    JD12/19-92Y
    As low as $10.62 $15.58
    Ruland JD12/19-92Y, Jaw Coupling Spider, 92 Shore A Yellow, 0.750" (19.1mm) OD, Balance of Torque and Dampening
  6. Ruland JD12/19-98R, Jaw Coupling Spider
    JD12/19-98R
    As low as $10.62 $15.58
    Ruland JD12/19-98R, Jaw Coupling Spider, 98 Shore A Red, 0.750" (19.1mm) OD, High Torque
  7. Ruland JS12-3-A, Jaw Coupling Hub
    JS12-3-A
    As low as $12.75 $18.70
    Ruland JS12-3-A, 3/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.750" OD, 0.385" Length
  8. Ruland JS12-4-A, Jaw Coupling Hub
    JS12-4-A
    As low as $12.75 $18.70
    Ruland JS12-4-A, 1/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.750" OD, 0.385" Length
  9. Ruland JS12-5-A, Jaw Coupling Hub
    JS12-5-A
    As low as $12.75 $18.70
    Ruland JS12-5-A, 5/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.750" OD, 0.385" Length
  10. Ruland MJC19-4-A, Jaw Coupling Hub
    MJC19-4-A
    As low as $14.50 $21.27
    Ruland MJC19-4-A, 4mm Jaw Coupling Hub, Aluminum, Clamp Style, 19.1mm OD, 9.8mm Length
  11. Ruland MJC19-5-A, Jaw Coupling Hub
    MJC19-5-A
    As low as $14.50 $21.27
    Ruland MJC19-5-A, 5mm Jaw Coupling Hub, Aluminum, Clamp Style, 19.1mm OD, 9.8mm Length
  12. Ruland MJC19-6-A, Jaw Coupling Hub
    MJC19-6-A
    As low as $14.50 $21.27
    Ruland MJC19-6-A, 6mm Jaw Coupling Hub, Aluminum, Clamp Style, 19.1mm OD, 9.8mm Length
  13. Ruland MJC19-7-A, Jaw Coupling Hub
    MJC19-7-A
    As low as $14.50 $21.27
    Ruland MJC19-7-A, 7mm Jaw Coupling Hub, Aluminum, Clamp Style, 19.1mm OD, 9.8mm Length
  14. Ruland MJC19-8-A, Jaw Coupling Hub
    MJC19-8-A
    As low as $14.50 $21.27
    Ruland MJC19-8-A, 8mm Jaw Coupling Hub, Aluminum, Clamp Style, 19.1mm OD, 9.8mm Length
  15. Ruland MJS19-4-A, Jaw Coupling Hub
    MJS19-4-A
    As low as $12.75 $18.70
    Ruland MJS19-4-A, 4mm Jaw Coupling Hub, Aluminum, Set Screw Style, 19.1mm OD, 9.8mm Length
  16. Ruland MJS19-5-A, Jaw Coupling Hub
    MJS19-5-A
    As low as $12.75 $18.70
    Ruland MJS19-5-A, 5mm Jaw Coupling Hub, Aluminum, Set Screw Style, 19.1mm OD, 9.8mm Length
  17. Ruland MJS19-6-A, Jaw Coupling Hub
    MJS19-6-A
    As low as $12.75 $18.70
    Ruland MJS19-6-A, 6mm Jaw Coupling Hub, Aluminum, Set Screw Style, 19.1mm OD, 9.8mm Length
  18. Ruland MJS19-7-A, Jaw Coupling Hub
    MJS19-7-A
    As low as $12.75 $18.70
    Ruland MJS19-7-A, 7mm Jaw Coupling Hub, Aluminum, Set Screw Style, 19.1mm OD, 9.8mm Length
  19. Ruland MJS19-8-A, Jaw Coupling Hub
    MJS19-8-A
    As low as $12.75 $18.70
    Ruland MJS19-8-A, 8mm Jaw Coupling Hub, Aluminum, Set Screw Style, 19.1mm OD, 9.8mm Length
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