Due to Microsoft's discontinuation of updates, including security, certain functionality such as checkout and CAD may not work for you. We recommend using Google Chrome, Microsoft Edge, Firefox, or Safari to ensure full functionality.
Thank you - the Ruland team

Jaw Coupling Hubs

This section will allow you to select hubs to be used individually or as part of an assembly. Ruland jaw coupling hubs undergo a proprietary machining process to produce a curved jaw profile that press fits with the spider, assuring zero-backlash operation. The curved jaw profile concentrates the forces to the center of the spider’s limbs, improving the effectiveness of the elastomer material. Jaw couplings are considered fail safe because if the spider were to fail, the jaws of the two hubs interlock for direct power transmission, allowing the application to be safely shut down for maintenance.

Features

  • Zero backlash
  • Balanced design
  • Replaceable spider
  • RoHS3 and REACH Compliant
  • Maximum speed: 8,000 RPM
  • Bore tolerance:
    • +.001"/-.000"
    • +.03mm/-.00mm
  • Temperature Range:
    • -10°F to 180°F
    • -23°C to 82°C

Material

  • Aluminum hubs are standard
  • Stainless steel hubs are available upon request

Line Drawing

Line Drawing

How to Order

Complete Coupling: Jaw couplings are an assembly of two hubs and one spider

Hubs: Choose two hubs in inch or metric in any style with the same outside diameter

Spider: Choose spider to match performance criteria. The spider must have the same outside diameter as both hubs.

Each hub and spider is sold separately

Products

View as Grid Table

Items 121-144 of 402

Set Descending Direction
  1. Ruland JSC32-12-A, Jaw Coupling Hub
    JSC32-12-A
    As low as $59.67 $87.52
    Ruland JSC32-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.000" OD, 0.820" Length
  2. Ruland JSC32-14-A, Jaw Coupling Hub
    JSC32-14-A
    As low as $59.67 $87.52
    Ruland JSC32-14-A, 7/8" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.000" OD, 0.820" Length
  3. Ruland JSC32-16-A, Jaw Coupling Hub
    JSC32-16-A
    As low as $59.67 $87.52
    Ruland JSC32-16-A, 1" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.000" OD, 0.820" Length
  4. Ruland JSC32-8-A, Jaw Coupling Hub
    JSC32-8-A
    As low as $59.67 $87.52
    Ruland JSC32-8-A, 1/2" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.000" OD, 0.820" Length
  5. Ruland JSC36-10-A, Jaw Coupling Hub
    JSC36-10-A
    As low as $81.96 $120.21
    Ruland JSC36-10-A, 5/8" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.250" OD, 1.130" Length
  6. Ruland JSC36-12-A, Jaw Coupling Hub
    JSC36-12-A
    As low as $81.96 $120.21
    Ruland JSC36-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.250" OD, 1.130" Length
  7. Ruland JSC36-14-A, Jaw Coupling Hub
    JSC36-14-A
    As low as $81.96 $120.21
    Ruland JSC36-14-A, 7/8" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.250" OD, 1.130" Length
  8. Ruland JSC36-16-A, Jaw Coupling Hub
    JSC36-16-A
    As low as $81.96 $120.21
    Ruland JSC36-16-A, 1" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.250" OD, 1.130" Length
  9. Ruland JSC36-18-A, Jaw Coupling Hub
    JSC36-18-A
    As low as $81.96 $120.21
    Ruland JSC36-18-A, 1-1/8" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.250" OD, 1.130" Length
  10. Ruland JSC36-20-A, Jaw Coupling Hub
    JSC36-20-A
    As low as $81.96 $120.21
    Ruland JSC36-20-A, 1-1/4" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.250" OD, 1.130" Length
  11. Ruland JSC36-8-A, Jaw Coupling Hub
    JSC36-8-A
    As low as $81.96 $120.21
    Ruland JSC36-8-A, 1/2" Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 2.250" OD, 1.130" Length
  12. Ruland MJC15-3-A, Jaw Coupling Hub
    MJC15-3-A
    As low as $14.43 $21.17
    Ruland MJC15-3-A, 3mm Jaw Coupling Hub, Aluminum, Clamp Style, 15.0mm OD, 7.6mm Length
  13. MJC15-3/2.5D-A
    MJC15-3/2.5D-A
    As low as $18.19 $44.64
    Ruland MJC15-3/2.5D-A, 3/2.5Dmm Jaw Coupling Hub, Aluminum, Clamp Style with D-Bore, 15.0mm OD, 7.6mm Length
  14. Ruland MJC15-4-A, Jaw Coupling Hub
    MJC15-4-A
    As low as $14.43 $21.17
    Ruland MJC15-4-A, 4mm Jaw Coupling Hub, Aluminum, Clamp Style, 15.0mm OD, 7.6mm Length
  15. MJC15-4/3.5D-A
    MJC15-4/3.5D-A
    As low as $18.19 $44.64
    Ruland MJC15-4/3.5D-A, 4/3.5Dmm Jaw Coupling Hub, Aluminum, Clamp Style with D-Bore, 15.0mm OD, 7.6mm Length
  16. Ruland MJC15-5-A, Jaw Coupling Hub
    MJC15-5-A
    As low as $14.43 $21.17
    Ruland MJC15-5-A, 5mm Jaw Coupling Hub, Aluminum, Clamp Style, 15.0mm OD, 7.6mm Length
  17. MJC15-5/4.5D-A
    MJC15-5/4.5D-A
    As low as $18.19 $44.64
    Ruland MJC15-5/4.5D-A, 5/4.5Dmm Jaw Coupling Hub, Aluminum, Clamp Style with D-Bore, 15.0mm OD, 7.6mm Length
  18. Ruland MJC15-6-A, Jaw Coupling Hub
    MJC15-6-A
    As low as $14.43 $21.17
    Ruland MJC15-6-A, 6mm Jaw Coupling Hub, Aluminum, Clamp Style, 15.0mm OD, 7.6mm Length
  19. MJC15-6/5.5D-A
    MJC15-6/5.5D-A
    As low as $18.19 $44.64
    Ruland MJC15-6/5.5D-A, 6/5.5Dmm Jaw Coupling Hub, Aluminum, Clamp Style with D-Bore, 15.0mm OD, 7.6mm Length
  20. Ruland MJC19-4-A, Jaw Coupling Hub
    MJC19-4-A
    As low as $14.80 $21.70
    Ruland MJC19-4-A, 4mm Jaw Coupling Hub, Aluminum, Clamp Style, 19.1mm OD, 9.8mm Length
  21. Ruland MJC19-5-A, Jaw Coupling Hub
    MJC19-5-A
    As low as $14.80 $21.70
    Ruland MJC19-5-A, 5mm Jaw Coupling Hub, Aluminum, Clamp Style, 19.1mm OD, 9.8mm Length
  22. MJC19-5/4.5D-A
    MJC19-5/4.5D-A
    As low as $18.66 $45.77
    Ruland MJC19-5/4.5D-A, 5/4.5Dmm Jaw Coupling Hub, Aluminum, Clamp Style with D-Bore, 19.1mm OD, 9.8mm Length
  23. Ruland MJC19-6-A, Jaw Coupling Hub
    MJC19-6-A
    As low as $14.80 $21.70
    Ruland MJC19-6-A, 6mm Jaw Coupling Hub, Aluminum, Clamp Style, 19.1mm OD, 9.8mm Length
  24. MJC19-6/5.5D-A
    MJC19-6/5.5D-A
    As low as $18.66 $45.77
    Ruland MJC19-6/5.5D-A, 6/5.5Dmm Jaw Coupling Hub, Aluminum, Clamp Style with D-Bore, 19.1mm OD, 9.8mm Length
per page
© 2025 Ruland Manufacturing Co., Inc. All rights reserved Top