Primary NM Coupling
NM168 Flexible Jaw Coupling
NM168 NM flexible coupling with 28-75 mm bore range, 4000 rpm reference maximum speed and 59.5 kgf·m reference normal torque.
Bore range28-75毫米
Reference max speed4000转/分
Reference normal torque59.5 kgfu00b7m
NM168 is an NM flexible coupling size for industrial shaft connections. Its size data gives a first check for bore capacity, operating speed and torque. The finished hubs are machined to the actual shafts, so the driver and driven bores may be different.
NM168 technical specifications
| Parameter | Value | Buyer note |
|---|---|---|
| Bore range | 28-75毫米 | Confirm both finished bores independently. |
| Reference max speed | 4000转/分 | Compare with the actual operating speed. |
| Reference normal torque | 59.5 kgf·m | Use with the real machine duty, not as the only selection input. |
Specify both shaft interfaces
The coupling size does not define the finished bore. State the diameter, keyway and fit for Shaft 1 and Shaft 2 separately. If axial space is restricted, include the available hub envelope or an assembly drawing.
Operating information for selection
| Item | What to confirm |
|---|---|
| Driver | Motor, engine or other driver; include power and operating speed. |
| Driven equipment | Pump, compressor, gearbox, fan, mixer, conveyor or other machine. |
| Duty pattern | Continuous/cyclic service, starts, reversals and shock loading where present. |
| Environment | Unusual heat, contamination, oil/chemical exposure or outdoor conditions. |
| Replacement work | Existing marking, photos and measurable hub dimensions. |
Typical applications
NM couplings are commonly used on pumps, compressors, motor-to-gearbox drives, fans, blowers, mixers, conveyors and general industrial machinery. Application suitability depends on the complete duty and shaft interfaces.
Request a NM168 Quote
Send both shaft dimensions, operating speed, driven equipment and quantity. Include the existing coupling marking or drawing for replacement work.
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