Tension & Extension Springs

Extension springs are springs which absorb and store energy by offering resistance to a pulling force. Various types of ends are used to attach the extension spring to the source of the force. Extension springs are usually straight, tapered, and conical.

Consider extension spring when you need:

  • Round and Square Shapes
  • Machine Loops, Side Loops, Crossover Center Loops, Extended Loops, and Loops Custom to your Design
D (wire diameter): This parameter describes the diameter of wire used as material for spring.
De (External Diameter): External diameter at large end of the spring. Tolerance for this parameter is (+-)2%(indicative).
Ds (Internal Diameter): Internal diameter at small end of the spring. Tolerance for this parameter is (+-)2%(indicative)
B.L (Body length): Body length of Extension springs is measured in its uncompressed state Tolerance for this  parameter is (+-)2%(indicative).
F.L (Free length) : Free length means distance between two hooks .(Inside Hooks)
R (spring rate): This parameter determines spring’s resistance, while it is working. It is measured in 1 DaN/mm = 10 N/mm. Tolerance for this parameter is (+-)15%(indicative).
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