Extension Spring

Extension Spring
Product Name : Extension Spring
Product Description
Extension springs are commonly attached at both ends to other components and are used to create resistance against linier tensioning forces or pulling forces. These springs can be supplied with open hooks, closed eyes or various other forms of attachment on the ends and they can normally be made complete on a CNC spring forming machine. The weakest point of a extension spring is where the body of the spring forms into the hook or eye; however there are several design methods that we can employ to resolve this issue, ensuring high quality and precision extension springs to meet your demands.
Product Introduction

We provide precision extension springs which absorb and store energy by offering resistance to a pulling force. The precision extension springs are made from round wire and are close wound with initial tension. The part of extension applications include tape cassette players, balance scales, garage doors, washing machines and applications which requiring various types of tensioning devices. Various types of ends are used to attach the extension spring to the source of the force.

Unlike compression springs, precision extension springs don't have a solid stop to prevent overloading. Because of this design stress levels are lower for extension springs than for compression.

Feature:

  • This build-in load, called initial tension, can be varied within limits, decreasing as the spring index increases.
  • There is a range of stress (and, therefore, force) for any spring index that can be held without problems.
  • If the designer needs an precision extension springs with no initial tension he should design the spring with space between the coils.