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Constant Force Spring, 301 Stainless Steel, Inch, 2500 Cycle Life, 24" Extended Length, 0.375" Width, 0.45" ID, 0.54" OD, 0.13" End Hole Diameter, 1.48lbs/in Load Capacity (Pack of 5)

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Specifications for this item
Number of Items
Wire Diameter
0.54  inches
Overall Width
0.375  inches
Part Number
Outside Diameter
0.45  inches
Brand Name
Small Parts
Load Capacity
1.48  pounds
Overall Length
24  inches

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Key Features

  • Type 301 Stainless Steel
  • Plain Finish

Package Details

Shipping Weight: 0.05 pounds
Package Size: 7.3 x 4.9 x 0.5 inches

Product Description

Constant-force springs are a special variety of extension springs. They consist of a spiral of strip material with built-in curvature so that each turn of the strip wraps tightly on its inner neighbor. The strip can then be extended, with the inherent stress resisting the loading force, but at a nearly constant rate. In a typical application, the spring is mounted on a drum, and the free end attached to a loading force, such as in a counterbalance application. Or, the relationship can be reversed. These springs can be used in tandem or back-to-back to multiply the load capacity.

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