What is a Compression Spring? Types and Applications

What is a Compression Spring? Types and Applications

A compression spring is one of the most common types of springs, mainly designed to withstand compressive forces. When an external load is applied, the spring shortens as it is compressed; when the load is removed, it returns to its original shape and releases the stored energy.
Its primary functions are to absorb vibration, cushion impact, and provide restoring force.

Types of Compression Springs

1. Cylindrical Compression Spring – The most common type with uniform pitch and stable force characteristics.

2. Conical Compression Spring – Narrow at the top and wide at the bottom; can telescope into itself to save space.

3. Barrel Compression Spring – Larger in the middle and smaller at both ends to prevent buckling.

4. Hourglass Compression Spring – Smaller in the middle and larger at both ends; often used where stable positioning is required.

5. Magazine Compression Spring – Rectangular in shape, commonly used in toy guns or magazines to push pellets or bullets upward.

6. Custom Compression Spring – Springs with special shapes, irregular diameters, or non-uniform coil spacing, designed for unique applications.

Applications of Compression Springs

1. Automotive Components: Suspension systems, clutches, and brake assemblies.

2. Electronic Devices: Buttons, battery contact springs.

3. Machinery and Equipment: Shock absorption, return mechanisms.

4. Medical Devices: Surgical instruments, injection systems.