Open Coiled Helical Springs Vs Closed Coiled Helical Springs

 

  1. Open Coiled Helical Springs: These helical springs are designed to resist compression, which is they are known as compression springs. These springs are not wound tightly, and have a high pitch. This results in large spaces between the coils, which also makes the springs very recognizable. Hence, no two turns of a spring will lie on the same axis of the helix. The turns of these springs are located at inclined angles towards the helical axis. Some typical applications include ball point pens, valve assemblies in engines, car suspension systems, pogo sticks, etc.
  1. Closed Coiled Helical Springs: Designed to resist stretching and twisting, these springs are also known as tension/extension springs. These springs feature an eye or a hook at the end for attachment. These springs can endure stress caused by high torsion or bending. The coils are closely wound to each other, and lie on the same axis of the helix. The turns of this spring lie at 90 degrees to the axis of the helix. These springs are used for heavy duty applications such as carburetors, garage door assemblies, vise-grip pilers, etc.

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