A spiral wound torsion spring in zinc plated steel for general industrial mechanisms. The spiral form spreads the wound length across a flat plane instead of stacking it along a shaft, which suits mechanisms that have radial room but very little axial depth.
The spiral geometry works where a conventional stacked body simply will not fit between two plates.
Cost effective corrosion protection for indoor machinery, available in a range of colours where parts need to be distinguished.
Changing wire diameter and the number of spiral turns adjusts torque substantially without changing the envelope.
Anchor the outer end before winding the inner end onto the shaft. Winding an unanchored spiral spring lets it unwind unpredictably during assembly.
Mechanisms where there is radial space but no axial depth for a conventional torsion body
Uncoated industrial springs corroding in workshop humidity
Dimensional and load figures are set per order against your drawing or sample, so they are marked TBC rather than filled with catalogue numbers.
| Product Type | Torsion Springs |
|---|---|
| Raw Material Options | Stainless steel, Spring steel, Carbon steel, 65Mn, Music wire |
| Wire Diameter Range | 0.1-8 mm |
| Surface Treatment Options | Zinc plating, Nickel plating, Silver plating, Gold plating, Tin plating, Galvanizing in various colours, Dacromet, Black oxide, Phosphating |
| Standard | ISO, non-standard and OEM drawings |
| Processing Route | Material sourcing → Coiling and forming → Heat treatment → Surface treatment → Quality inspection → Packing → Shipping |
| Inspection Equipment | Grinding and shot peening machinery; Precision tensile strength testers; Magnetic powder flaw detectors |
| Packing | Plastic bags, cartons or pallets, or packing to your own specification |
| Payment Terms | L/C, T/T, D/A, D/P, Western Union, 30% deposit before production, 70% balance before shipment |
| Lead Time | 7-15 days after the order is confirmed |
| Minimum Order Quantity | Quoted per part — tell us your requirement (TBC) |
| Dimensions and Load Rating | Made to your drawing or sample (TBC per part) |
Every batch follows the same seven step route, with tensile testing and magnetic powder flaw detection carried out before packing.
Available in Stainless steel, Spring steel, Carbon steel, 65Mn, Music wire, in wire from 0.1-8 mm, with any of our nine surface finishing routes. Geometry, end treatment and finish are all specified per order.
ISO 9001, SGS certificate and RoHS report (stated on the legacy site, certificates pending re-confirmation). Certificate copies are sent on request once re-confirmed.
Compared with a helical torsion spring of equivalent torque, the spiral version is flatter and larger in diameter, which is the whole reason to choose it.
A spiral torsion spring's torque rises as it is wound, like any torsion spring. A constant force spring is designed so the force stays level across the stroke.
It depends on wire size and the space available. Send the envelope and torque you need and we will confirm what fits.
Yes. The inner end can be formed to engage a slot or a pin on the shaft, which is how most spiral springs are driven.
Send your drawing, dimensions or a sample. We will confirm the specification and come back with a price and a lead time.
