Extension springs can also be made by our Multi-Slide Forming Coilers. If you need larger
extension springs take a look at those types of machines. The EF Machines are specifically designed for high
speed, high output production of smaller extension springs.
Wire Diameter
Ø 0.1~1.0 mm
Ø .0039~.03937"
Max Coil Diameter
Ø 12 mm
Ø .4724"
Model EF-210
Product Features
Suitable for production of standard extension springs, English hook, German hook, Indian hook extension springs, with free length less than 100mm.
High production efficiency, the production speed of English hook spring is around 100~120 ppm, for German hook spring is around 60~80 ppm.
Standardized tooling, suitable for mass production.