What are the advantages of locking nuts?

Time:2021-12-21

　　Locknut Lockproof principle: the upper part of the conventional 60 degree tooth tip has a 30 degree wedge surface. This structure allows for increased friction between male and female threads and subsequently between male and female threads. Since the bolts are tightened with nuts, they prevent loosening. There are four ways to prevent loose nuts: friction, mechanical nut, rivet and structure.

　　What are the advantages of locking nuts?

　　1. Anti-vibration performance: the normal force generated by tightening the anti-lock nut is much greater than that of the ordinary standard nut, which has excellent anti-loose and anti-vibration performance.

　　2. Good reuse performance: After long-term use, the locking force does not decrease. Even if the locking 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 tilted at 30°, so that the nut locking force is evenly distributed on all threads on each tooth. Therefore, because the compression force of each tooth thread surface is uniform, the nut can better solve the problems of screw wear and shear deformation.

　　Nylon lock nut

　　In addition, the lock nut needs preset torque, and the installation requires relatively large installation torque. In this process, it is easy to "bite" or "lock" phenomenon. If locked, it can only be fixed by damage such as cutting bolts. Before installation, pay attention to the lubrication of the nut (wax or other resin looser) to reduce the installation torque and speed. This effectively reduces the locking of the lock nut.