Prestressed Power Spring

The design of pre-stressed power spring is suitable for the demand of high torque in various narrow spaces and can store 25% -50% more torque than power spring type. Such as the application of various car seat belts. The pre-stressed power spring can provide smooth torque output, with a stable and longer life cycle advantage. We can assist our customers in design and development.

  • Material : Type 301 stainless steel is typically used for most applications. High-carbon steel and other materials may be required.
  • A wide variety of materials are available for use depending on your application.
  • Thickness : 0.04 - 1.0mm
  • Width : 2.5 - 90mm


[Prestressed Power Spring] / [Customized Prestressed Power Spring]

Prestressed Power springs are made of rectangular section material, are wound flat, and have either special retaining holes or bends on both ends.  As the length-to-thickness ratio (L/t) increases, the spiral space between coils increases rapidly.  To reduce the space required and maintain a reasonable amount of deflection (turns), prestressed power springs are retained in some type of housing or case in application.

Feature of Spring

[Prestressed Power Spring]