Extension springs lengthen when a load is applied and are used to keep a system in equilibrium or subjected to a force.

Examples of achievements

Examples of applications

Wire diameter 0.10 mm to 14 mm
Manufacturing capacity From one-off parts to long runs
Sections Round Square
Secondary operations Single ring coils Double ring coils Coils with shaped hooks
Extension spring examples Open loop extension spring German loop extension spring Closed loop extension spring Stainless steel extension spring Large loop extension spring Galvanized extension spring English loop extension spring
Materials Mild steel Inconel Stainless steel Brass Spring steel Shape memory alloys Copper Titanium
Finishes Passivated Burnished Chrome-plated White zinc coated Cataphoresis Zinc dichromate plated Epoxy paint
Production equipment Numerically-controlled spring-coiling machines Automatic spring-coiling machines Automatic looping machines Heat treatment air furnaces