To design/manufacture a good extension spring , it is necessary to know

  • Tolerance grade of performance
  • Required fatigue life, moreover to select the correct type of hook

 

The extension springs we offer, are:

  • English hooks extension spring
  • German hooks extension spring
  • American hooks extension spring
  • Closed hooks extension spring:  ideal for high demanding fatigue life

 

Extension spring - Federtek Extension spring - Federtek Extension spring - Federtek Extension spring - Federtek