Conical Extension Springs

Leveraging on our rich industrial experience, we produce conical extension springs. These conical extension springs are widely used for high cycle or heavy-duty applications. The hooks are designed in such a way to give extended life as compared to standard extension springs of similar dimension. The hooks have free movement to rotate to assure alignment.

Conical end reduced extension springs or conical extension springs are manufactured by coiling two, three or probably four coils gradually smaller in diameter and then forming the hook on the smallest reduced coil. The hook may be a regular hook, a crossover hook, or a half hooks to suite the requirements. This method is the easiest way to diminish the hook stresses and retard breakage. The reason for longer life is that the bending moment is lessened; thereby reducing the stress and making the hook last longer. Conical extension end need a method of attachment to other parts in an assembly. A wide variety of ends are available for a conical extension spring including swivel hooks, threaded insert, twist loops, side loops, cross-center and extension hooks. The most general configurations can be made during the manufacture of conical extension spring.