Micro Compression Springs

Micro compression springs are intricate and tiny helical springs crafted to endure compression along their coiled axis. These springs, commonly used in a myriad of applications, function autonomously or within a designated guide rod or orifice. Upon experiencing a load that causes them to compress, micro compression coil springs exert a force to revert to their original length. These springs effectively resist linear compressive forces (push) and serve as highly efficient devices for storing energy.

The energy capacity of a micro compression spring is contingent upon factors such as its material characteristics, wire diameter, and coil quantity. The stiffness of these micro springs, referred to as their rate, is dictated by the wire diameter and coil count. The rate signifies the change in force per unit alteration in length, typically measured in pounds per inch or newtons per millimeter. Modifying the wire diameter or coil count enables customization of the rate according to specific requirements.

Applications of Micro Compression Springs

Micro compression springs find widespread utility across diverse sectors, including medical equipment, electronic gadgets, cell phones, electronic assemblies, and delicate instruments.

Customized Micro Compression Springs

China Custom Spring offers comprehensive custom micro compression spring services and technical assistance from concept development to manufacturing. These bespoke micro compression springs can be tailored in various sizes and materials, encompassing stainless steel, carbon steel, chrome silicon, and music wire.

China Custom Spring boasts advanced capabilities, including robust quality assurance protocols, expertise in compliance regulations such as RoHS, REACH, and DFARS, CAD-enabled design processes, in-house prototyping facilities, and a global network for supply chain management. The company holds ISO 9001:2015 certification, complies with REACH and RoHS directives, and is registered under ITAR. Whether for short production runs or large-scale projects, China Custom Spring stands ready to meet your customized micro compression spring needs.

Critical Parameters for Micro Compression Spring Design

• 1. Rate: The rate refers to the change in load per unit deflection, measured in pounds per inch (lbs/in) or Newtons per millimeter (N/mm).
• 2. Stress: Spring stress is influenced by dimensions, load, and deflection requirements. It is most prominent at the wire’s surface and varies during deflection, impacting the spring’s lifespan.
• 3. Outside Diameter: The outer diameter formed by the spring coils’ outer surface.
• 4. Hole Diameter: The space where the compression spring is placed. Often confused with the spring’s size, it should exceed the outside diameter, considering tolerances and spring expansion under load.
• 5. Rod Diameter: The rod within the compression spring acts as a guide shaft to prevent buckling. It should be marginally smaller than the spring’s inner diameter.
• 6. Free Length: The unloaded length of the spring, inclusive of anchor ends for extension springs.
• 7. Wire Diameter: The diameter of the spring’s raw material.
• 8. Solid Height: The compressed length of the spring when fully compressed.
• 9. Spring Set: Permanent deformation occurring when a spring is loaded past its elastic limit.
• 10. Load at Solid Height: The force needed to fully compress the spring, useful for preventing spring bottoming out.

Micro Compression Spring Manufacturing