The Function of WSBC Lock Nut

Time：2020.06.18  Source：Roller Bearings Suppliers

Lock nut, is a kind of nut widely used in machinery and other industries, its working principle is the use of friction between nuts and bolts for self-locking.However, the reliability of self-locking will be reduced under dynamic load.On important occasions, we take precautions to ensure that the nuts are securely fastened.

The working principle of nuts is to use the friction force between nuts and bolts for self-locking.However, the reliability of self-locking will be reduced under dynamic load.On important occasions, we take precautions to ensure that the nuts are securely fastened.The locking nut is one of them.

The anti-loosening effect of locking nut mainly depends on the interaction force between nut and bolt meshing thread.There are many ways to improve the interaction force between the meshing threads, such as the improvement of the screw structure of the fastening nut, the nylon roughening of the nylon nut, and the surface treatment of the thread.

The first is to screw two identical nuts on the same bolt and attach a tightening torque between the two nuts to make the bolt connection reliable.

The second type is a special locknut which needs to be used with a lockwasher.The special anti-loose nut is not a hexagon nut, but a middle round nut. There are 3, 4, 6 or 8 holes (depending on the size of the nut and the product series of the manufacturer) in the circumference of the nut. These holes are both the tightening point of the tool and the clamping point of the anti-loose gasket.Need WSBC KM 22,23234CCK/W33 click here to learn more.

The third is a hole drilled through the outer round surface of the nut to the inner round thread surface (usually 2, with a distribution of 90 on the outer round surface), which is used to screw in a small diameter countersunk head screw. The purpose is to exert a centripeal force on the thread to prevent the locking nut from loosening.Lock nuts of better quality on the market are mounted on the inner round surface of the nut with copper pieces of the same thread as the lock nut to prevent damage to the radial jacking screw by direct contact with the lock thread.The locking nut is gradually applied to the shaft end 

locking of rotating moving parts, such as ball screw mounting end bearing for loosing.

The fourth kind of LOCK nut is consists of two parts, each part has staggered CAM, due to internal wedge Angle design of slope Angle is greater than the bolt nut, the combined tightly bite into a whole, when there is a vibration occurs, DISC - LOCK raised portion are performed.the locknut, raising tension, so as to achieve the perfect effect of locking.

The fifth is the structural anti-loose, through the design improvement on the screw structure, without the help of other outside

Comparison diagram of load bearing of screw thread with normal thread for fastening screw thread

Comparison diagram of load bearing of screw thread with normal thread for fastening screw thread

Factors to obtain a self-locking function, therefore its applicability than the above methods is more extensive, and less environmental requirements, such as the application of a fastening lock nut.There are a lot of different types of nuts, nylon nuts, flange nuts, but it's the kind of nut that prevents loosening.Twist the nut to the screw, screw, bolt, etc., so that it won't come loose.Enable them to actively join together, so that the firm, stable performance to a high degree.Click here to learn more about WSBC KM26 . 23036CC/W33

Matters needing attention in the fit between the locking nut and the bearing: The direction and nature of the load should be paid attention to when selecting the fit between the locking nut and the bearing:

1)Local load: The resultant radial load acting on the raceway of the raceway is borne by the local area of the raceway of the raceway of the raceway of the raceway of the raceway of the raceway and transmitted to the corresponding local area of the matching surface of the shaft or the housing, which is called local load.The characteristics of the local load and the resultant radial load vector are relatively static with the ring.

2)Cyclic load The resultant radial load vector acting on the ring rotates along the circumference of the raceway and is successively borne by various parts of the raceway (locking nut). This load is called cyclic load;The characteristic of the cyclic load is that the resultant radial load vector rotates relative to the ring.