Wave Spring Washers

Structural Types of Wave Spring Washers

WG-type wave spring washer: It is an open-type elastic washer that can be installed in a relatively small space. For example, by applying pre-stress to the bearing, it can reduce the running noise of the bearing, improve the running precision and smoothness, and is widely used in the field of electronic appliances.

WL-type wave spring washer: It is a lapped-type elastic washer. Similarly, it can be installed in a small space and is commonly used in bearing-related applications as well as in the field of electronic appliances.

WN-type wave spring washer: It belongs to a multi-layer wave crest overlapping type elastic washer. Compared with the WL type, the K-value curve under the same compression stroke is relatively gentle, and it is suitable for situations where the elastic force is large and the elastic force release during the entire working stroke is required to be relatively uniform.

Working Principle of Wave Spring Washers

The wave spring washer has a specific wavy profile. When compressed by a nut, these waves undergo elastic deformation, thus generating additional pressure between the bolt head and the connected component, increasing the frictional force and effectively preventing the bolt from loosening on its own under vibration or dynamic load. At the same time, due to the flexibility of the wavy structure, even on an uneven or slightly inclined joint surface, it can evenly distribute the pressure, compensate for surface defects, and ensure a tight and stable connection.

Characteristics and Advantages of Wave Spring Washers

Good Elastic Performance: The special wavy design enables the washer to undergo large deformation under load and has good elastic recovery performance, which can effectively buffer and absorb vibration and impact loads.

Uniform Load Distribution: It can evenly distribute the load across the entire washer, avoiding local damage caused by uneven force.

Reliable Sealing Performance: Its structural design can achieve a good sealing effect and is suitable for different media and working environments.

Simple and Quick Installation: The installation methods are flexible and diverse, and no special tools are required, which simplifies the process and improves work efficiency.

High Cost-effectiveness: Compared with other complex anti-loosening devices, the wave spring washer has a simple structure and a relatively low price, which can reduce production costs and maintenance costs.

Application Fields of Wave Spring Washers

Mechanical Manufacturing Industry: It is used to connect bolts and nuts and fix various machine parts in equipment such as machine tools, conveyors, and vibrating screens.

Automotive Industry: It is widely used in the bolt connections of components such as engines, suspension systems, and transmission systems to absorb vibrations and impacts, reduce noise, and ensure the reliability of the connection.

Aerospace Field: It is used for the bolt connections of aerospace devices such as aircraft, rockets, and satellites, as well as for the fixation of components such as aircraft engines, seats, and landing gears.

Electronic Equipment: It is commonly used for the fixation of printed circuit boards (PCBs), the installation of connectors, the shock absorption and protection of electronic components, the fixation of motors and fans, and thermal management systems, etc., to prevent loosening and vibration, protect electronic components, and improve the stability and reliability of the equipment.

Construction Engineering: It is used in the connections of buildings such as steel structures, bridges, and tunnels to reduce vibrations and improve the stability and safety of the structure.

Railway and Transportation Engineering: In transportation projects such as railways, subways, bridges, and roads, it is used to connect bolts to reduce vibrations and noise and extend the service life of equipment and structures.

Material Selection of Wave Spring Washers

Common materials include carbon steel, stainless steel, copper alloy, etc. The wave spring washer made of carbon steel has high strength and hardness and relatively low cost; the washer made of stainless steel has good corrosion resistance and oxidation resistance and is suitable for harsh environments; the washer made of copper alloy has good electrical conductivity and thermal conductivity and is often used in fields such as electronic appliances that have special performance requirements.

Relevant Standards for Wave Spring Washers

For example, GB/T 955-1987 specifies wave spring washers with a specification of 3 to 30mm; the DIN 137 standard for wave spring washers is divided into DIN 137(A) saddle-shaped elastic washers and DIN 137(B) wave spring washers, etc.