Locking nut is a kind of nut widely used in machinery and other industries. Its working principle is to use the friction between the nut and the bolt for self-locking. However, the reliability of this self-locking will be reduced under dynamic load.
In some important occasions, we will take some anti-loosening measures to ensure the reliability of nut locking. The important feature of locking nut is anti-loosening, also called anti-loosening nut or anti-loosening nut.
There are three types of locking nuts:
The first is a square locking nut, or anti-loosening bearing nut,
Its characteristic is that a small copper block consistent with the thread of the locking nut is inlaid on the inner circle of the nut to prevent the radial tightening stop screw from directly contacting the locked thread and damaging the latter.
The stop screw is equipped with a copper alloy kit, which has good fastening performance. This kind of locking nut is widely used on ball screws.
The second type is a round precision nut,
with a hook spanner groove on the side. This kind of nut uses a hook spanner tool, which is easy to operate and easy to lock. The front end of the fixing screw is equipped with a copper alloy locking plate, which has good fastening performance.
High precision, end face verticality of 0.005mm, generally used in machines with high precision requirements.
The third type is a split locking nut, also called a heavy-duty locking nut.
It consists of two parts. Due to the deviation between the center of the nut flange and the center of the thread, this combination is tightly bitten into a whole, producing a high-strength wedge effect.
Compared with the use of ordinary bearing nuts, it does not require the use of toothed spring washers or keyway processing on the shaft.