A small carbon steel compression spring with both ends ground and a black coating. Grinding on both sides is what lets a short spring sit flat under load instead of tilting, which matters far more on a small spring than on a long one.
Right and left hand grinding gives a flat bearing face at each end so the load stays on the spring's own axis.
Short springs tilt most readily. Ground ends are the difference between a spring that seats and one that wears its bore.
Keeps the spring unobtrusive where it is visible and gives more protection than a bare carbon steel surface.
Seat the spring against a flat, clean face. Debris under a ground end defeats the purpose of grinding it in the first place.
Short springs cocking sideways under load and scoring the bore they sit in
Bare carbon steel springs corroding in ordinary 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 | Compression 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.
Against an unground closed-end spring of identical geometry, this part costs a little more and stays square under load. In a pocket or over a guide rod, unground ends are acceptable.
If it seats against a flat face, yes. Unground ends make contact over about three quarters of a coil, which tilts a short spring noticeably.
It reduces it slightly, which is accounted for in the design. Specify the finished free length you need and we will allow for the grind.
Yes, and the same grinding applies. Stainless would be the choice for wet or washdown positions.
Send your drawing, dimensions or a sample. We will confirm the specification and come back with a price and a lead time.