How to Choose the Size of a Compression Spring?

Compression springs are common mechanical components widely used in various types of machinery and products. Selecting the appropriate size of a compression spring is crucial, as it directly affects the spring's performance and service life. Below, I will introduce how to choose the size of a compression spring from several aspects.

Load Requirements of the Spring:
Compression springs are typically used to bear certain loads. Therefore, the first step in choosing the size is to determine the magnitude of the load it will bear. The load determines the required spring stiffness, which is the relationship between the spring's deformation and the applied force. Generally, the greater the load, the higher the required spring stiffness. Thus, when selecting the size, the spring's diameter, wire diameter, and number of coils should be determined based on the load requirements.

Deflection Requirements of the Spring:
The deflection of a spring refers to the degree of deformation under load, which is often used to indicate the spring's flexibility. When selecting the size of a compression spring, the required deflection must be considered to ensure that the spring's performance meets the requirements. The greater the required deflection, the larger the spring diameter and wire diameter should be, and the number of coils may also increase.

Working Environment of the Spring:
The working environment of the spring also has an impact on the size selection. For example, compression springs used in high-temperature environments are typically made from materials that are resistant to high temperatures to ensure their service life. Springs used in humid environments require corrosion-resistant materials and may need special coatings to protect the spring. Therefore, when selecting the size, the working environment of the spring should be considered to choose the appropriate materials and coatings.

Safety Requirements of the Spring:
When selecting the size of a compression spring, safety must also be taken into account. The spring may be subjected to significant pressure and compressive forces during operation. Therefore, the size should be chosen to ensure the spring's safety. If the spring is too small, it may deform or fail due to fatigue, leading to equipment damage or personal injury.

In Summary:
Choosing the size of a compression spring is a complex process that involves considering multiple factors and determining the size based on specific application requirements. When selecting the size, it is advisable to consult professional spring manufacturers or engineers, who can provide professional advice and assistance based on your needs. I hope the above introduction is helpful for you in selecting the size of a compression spring.