Introduction to NMR 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 precisely set the preload force of the bearing,

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 also use different anti loosening methods.

The design of the NMR series locking nut adopts three locking copper pins, and the locking method is 90 degree locking. This type of nut design has a relatively thin wall thickness, making it suitable for thickness space to be limited

In a limited installation environment, the radial locking copper is perpendicular to the male thread, and excessive torque of the locking copper pin can easily cause a decrease in the axial load of the nut. This series uses precision machined threads, tolerances, etc

Grade is ISO 6H, with aperture sizes ranging from 6 to 200mmm

The axial deflection of each locking nut is extremely small, allowing for precise assembly and uniform force distribution on bearings and other components. Excellent thread fitting accuracy enables the screw

Repeated assembly (tightening) and disassembly (loosening) of the mother have become possible.

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

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The precision nut is made of high-strength alloy steel and has a hardness of 28 to 32HRC after heat treatment. The heat treatment process increases the strength of the material and gives it a high

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