Introduction to NMAM Lock Nut

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 used also have different anti loosening methods.

The NMAM 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 threads, with an axial deflection not exceeding 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. Excellent thread fit accuracy

Make it possible to repeatedly assemble (tighten) and disassemble (loosen) nuts 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

Norman Tower Precision Nut is made of high-strength alloy steel, with a hardness of 28 to 32 HRC after heat treatment. The heat treatment process increases the strength of the material and makes it more durable

Has high elasticity and can withstand severe impacts. The locking nut adopts precision machined threads with a tolerance grade of ISO 6H