Heavy duty springs are compression, extension, or torsion springs with a great amount of force. They have large wire diameters from 1/4" (inch) to 1" (inch) in thickness and are required when the spring needs to support a large amount of load in a mechanism.
Heavy duty compression springs are used in mechanisms that require a great amount of force to be exerted on the spring. You may find heavy duty compression springs in heavy construction machines, agricultural equipment, industrial equipment and oil field equipment.
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Custom Heavy Duty Springs