Belleville Washer , referred to as disc washers, also known as Heavy Duty Bolting Washers, according to its shape characteristics are often called Conical Spring Washers. Belleville Washer help to balance the loss of preload due to deformation and creep in bolt/nut assembly. At the same time, they are elastic enough to improve the overall elasticity of the connection pair. The inherent elasticity can compensate for the loss of preload, meet the clamping force requirements, and ensure the reliability of the connection pair. However, the Belleville Washer generally cannot prevent the loosening of the connection pair due to lateral movement, so, in use, it is necessary to check whether the Belleville Washer maintains the clamping force.
VS Series Serrated Safety Washers can better achieve anti-loosening effect, by increasing the friction resistance due to fastener loosening caused by the related problems, according to the bearing capacity is mainly divided into the following two categories:
Light Duty Series, commonly known as the standard load in China, the specification range covers M1.6 ~ M36. Medium Duty VS series, whose specification range covers M5 ~ M30, is thicker and has higher carrying capacity than S Series. It also has:
1. Forward locking saw tooth has high vibration resistance and anti-loosening performance.
2. The same force transmission and uniform axial load eliminate the bending torque of the bolt to prevent deformation.
3. Locking saw tooth to prevent friction, protect parts from damage.
4. High pretension of closed-loop design, there will be no bursting problem.
The working principle of the Belleville Washer is that when the bolt and nut are assembled, the axial load produces deformation storage axial tension potential energy. When the nut or bolt is loose, the washer spring release potential energy plays the role of anti-loosening. The design principle of DIN6796 is to eliminate the bad influence of the bolt and nut in the assembly, so as to play the locking role.
But at the same time, it should be noted that when using the Belleville Washer, improper installation will cause the nut to loosen. The correct installation direction should be the concave side of the dish spring washer towards the connector and the convex side towards the nut. The S/VS Series Serrated Safety Washers is smaller than the ordinary Belleville Washer, and the fastener has uniform force and is reliable to prevent loosening, but it is not suitable for common disassembly.
Shanghai Hegong Disc Spring Manufacturing Co can selecting suitable materials according to customer's use condition, in order to meet customer demands in maximum.
