Tension springs are stressed in shear but are “pulled” rather than “pushed”, in order to effect energy transfer. By virtue of this they have different end forms to anchor them and to effect the actuation of the energy stored. The form of the ends is varied and virtually infinite in shape to suit the user and the application. However there are a number of standard or commonly used shapes. Tension springs are usually close coiled. They have a nominally linear rate, when close coiled they are coiled with “initial tension

• Bangalore Spring Industries manufacture a wide range of round wire tension springs and have developed a number of special end forms for the convenience and efficiency as per the customers' requirements and keep a large selection of springs in stock. All you have to do is to provide us with a drawing or provide the required details to us and we will be happy to help you with our immediate and efficient services.
  
  Wire Size 0.3mm onwards to 10mm.
  
  Material Round - Spring steel wires & stainless steel wires, and also Pb wires.
   
  Ends There is a large variety of end types that can be put on a tension spring including: machine loops; extended loops; double loops; tapers; threaded inserts; hooks or eye lets at various positions; extended hooks.

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