Introduction to NMMSW Lock Nut

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.Precision locking nuts are designed to provide adjustment capability, preload, and fixed bearings for spindles and other rotating mechanical components. These nuts can accurately set the preload of the bearing

Force can withstand axial loads very firmly without loosening. Therefore, nuts can bear very high loads.

All precision locking nuts can provide locking and anti loosening functions using their own parts, without the need for any other components, stop rings, or additional mechanical processing. Different series

The locking nuts of each column also use different anti loosening methods.

The NMMSW series tightens some threads by axial deformation. Due to the large contact area, this design significantly improves the anti loosening ability. This series also uses precision machined screws

The axial deflection shall not exceed 0.005 mm.

The axial deflection of each Norman lock nut is extremely small, allowing for precise assembly and uniform force distribution on bearings and other components. The excellent thread fitting accuracy makes it possible to repeatedly assemble (tighten) and disassemble (loosen) the nut for use.

In order to maximize the load capacity of the lock nut, the matching thread must have both extremely high quality and appropriate strength. The specification table lists thread accuracy based on ISO6g or higher

(4h is suitable for high-precision applications such as spindles) and rated static load and loosening torque of 690N/mm2 (10000PSI) material strength. Additionally, it is necessary to verify the tooth profile tolerance and

And the surface roughness of the mating surface (i.e. threaded surface) should not exceed 0.8 μ mRa as much as possible

Lock nut design

Elasticity, able to withstand severe impacts. The locking nut adopts precision machined threads with a tolerance grade of ISO 6H