Oval wire tension springs

This variant of extension springs is the solution when higher forces and a longer service life are required. It is also known as a BOA tension spring, which stands for "Bevel Oval Application".

Detailed description

  • Structure is the same as a standard extension spring, instead of round wire they are made from oval wire
  • Spring bodies can be manufactured in a cylindrical shape or as special shapes, e.g. with tapered ends, reduction at the ends and in many other shapes
  • can be wound with a higher pre-tension compared to standard tension springs, resulting in higher initial tensile forces
  • Various loop designs possible, including special shapes and patterns
  • The position of the loops can vary, e.g. 0 degrees, 90 degrees, etc.

Advantages of the oval wire high-performance tension spring compared to round wire tension springs

  • Increase in forces or shortening of the spring body by up to 36%
  • Higher load capacity of the loops
  • Higher fatigue strength and service life - this increases up to 1000-fold
  • Better ratio of spring force to spring travel
  • More even stress distribution
  • More elasticity
  • Flatter characteristic curves due to higher preload

Also available in many variants in our stock range and as a stock item.

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