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Helical Springs
John Evans' manufactures Helical Springs of almost all types and sizes, including compression, extension, and torsion springs, using wire with a diameter as small as .004”. Helical springs can be made of music wire, oil-tempered and stainless steel, but numerous alternate materials, including the more exotic alloy steels, can often be quite successfully utilized.
Helical spring designs can be modified in many ways, including wire diameter, spring diameter, pitch and length, in order to achieve desired loads, rate, and fatigue life. Extension springs can include "initial tension" and various end-loops. Compression springs can include squared only, or squared-and-ground ends.
John Evans' extension and torsion spring manufacturing capabilities include state-of-the-art, computer-controlled equipment.
Our complete line of manufacturing equipment, and secondary operations department, enable us to provide unusual features such as stamped end hooks for extension springs, in order to eliminate the most likely point of failure-the end loop.
