The anti-loosening principle of the anti-loosening nut: there is a 30-degree wedge surface on the upper part of the conventional 60-degree tooth tip. This structure allows for increased friction between the male and female threads and subsequently between the male and female threads. Because the bolts are tightened with nuts, they prevent loosening. There are four ways to prevent lock nuts from loosening: friction locking, mechanical nut locking, rivet locking, and structural locking.
What are the advantages of lock nuts?
1. Anti-vibration performance: The normal force generated when tightening the lock nut is much larger than that of ordinary standard nuts, and has excellent anti-loosening and anti-vibration properties.
2. Good reusability: after long-term use, the locking force does not decrease. Even if the lock nut is repeatedly tightened and removed, the original locking effect can still be maintained.
3. Strong wear resistance and shear resistance: The bottom surface of the nut thread is inclined at 30°, so that the nut locking force is evenly distributed on all threads on each tooth. Therefore, the nut can better solve the problems of screw wear and shear deformation due to the uniform compression force of the thread surface of each tooth.
Furthermore, a somewhat significant installation torque is needed during installation, and the lock nut requires a preset torque. It is simple to trigger "biting" or "locking" occurrences during this process. Cutting the bolts or causing additional damage is the only way to solve it if it locks. Reduce the installation torque and speed and pay attention to the nut's lubrication (use wax or another resin loosening agent) prior to installation. This can successfully lessen the lock nut's locking.