Exploring the World of Springs: A Guide to Different Types(ra surface finish Mick)

  • Time:
  • Click:17


Springs play a crucial role in various mechanical systems, providing an essential force that enables them to function effectively. From small-scale applications like pens to large industrial machinery, springs are used extensively across different sectors. In this article, we will delve into the different kinds of springs and their manufacturing processes, shedding light on the fascinating world of spring technology.

1. Compression Springs:
Starting with one of the most common types, compression springs are designed to resist compressive forces when squeezed or pressed together. These springs can be found in mattresses, automotive suspension systems, and even ballpoint pens. To produce compression springs, advanced CNC machining techniques are employed to shape and form wire coils accurately. The wire material, typically steel, is carefully selected based on the application requirements.

2. Extension Springs:
As the name suggests, extension springs are designed to extend under tensile forces. They store energy while being stretched and release it when the applied force is removed. You'll find extension springs in trampolines, garage doors, and balance scales. Like compression springs, CNC machining ensures precision in their production. When extending these springs, their helical coils increase spacing between them, thus generating the restoring force.

3. Torsion Springs:
Torsion springs work by resisting rotational forces. By exerting torque along a radial distance from their central axis, they return to their original position when twisted. Commonly seen in clothespins, vehicle suspensions, and door hinges, torsion springs require careful CNC machining to achieve accurate helix angles and dimensions. The choice of materials depends on factors such as required strength, flexibility, and resistance to specific environmental conditions.

4. Constant Force Springs:
Constant force springs provide continuous force throughout their range of motion. They eliminate the need for complex mechanisms by delivering constant tension without any significant variation. Applications include retractable pens, tape measures, and window shades. CNC machining processes aid in precision-winding of the thin strip-like material used to create these springs.

5. Belleville Springs:
Belleville springs, also known as conical or disc springs, deliver high loads over small deflection distances. Their unique shape allows them to generate a large amount of force within minimal space requirements. Common uses for belleville springs include clamp applications, flange bolting, and electrical connectors. Advanced CNC manufacturing techniques ensure accurate dimensions and tolerance control during their production.

6. Wave Springs:
Wave springs are used when space is limited but flexibility and reliability are essential. This type of spring works by exerting radial pressure along its axis, providing a compact solution for many applications such as bearing preloads, seals, and valve assemblies. CNC machining enables precise forming of wave springs, allowing for customization based on specific design requirements.


Springs serve as indispensable components across various industries, enabling mechanisms to function smoothly by harnessing mechanical energy. The versatility in design and manufacturing methods offered by CNC machining has revolutionized the production of different types of springs, ensuring high-quality products that meet stringent tolerances. Whether it's compression, extension, torsion, constant force, belleville, or wave springs, understanding their unique characteristics can help engineers select the right type for optimal performance in their applications. CNC Milling