Safe installation of lock washers

Sep 05, 2022

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1. The installation of the anti-loosening washer is very simple, just place the inner helical tooth surfaces of the two washers against each other and place them between the nut and the connecting material.


2. After the nut is tightened, the radial raised surface on the outside of the anti-loose washer and the contact surfaces at both ends are in an engaged state, and the slope angle of the helical tooth surface on the inside of the washer is greater than the thread angle of the bolt.


3. When the bolt is elongated due to mechanical vibration, the nut will be rotated and loosened accordingly. However, the friction force of the outer radial convex surface of the lock washer is greater than the friction force between the inner helical tooth surfaces, so in this state, only the relative dislocation between the inner helical tooth surfaces is allowed to generate lifting tension. The bolt is contracted by the elongated bolt.


4. When the bolt shrinks, the helical tooth surface of the washer will make the nut return to its original position.


5. Anti-loose washers are only suitable for flat and smooth metal surfaces.


6. If the connecting material is non-metallic material, a metal plate can be fixed on the connecting material, so that the lock washer can be used.


7. There is no need to use a torque wrench when installing the lock washer.


8. Pneumatic tools can also be used when installing or removing the lock washer.


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