Written to answer the questions that come up before a spring can be quoted: what to measure, which material to choose, which finish survives the environment, and why hooks and legs are where springs actually fail.
The six numbers a spring maker needs before anything can be quoted, and how to measure them from a part you already have.
Why most torsion spring failures happen at the leg, and how to get the handedness right the first time.
Zinc, nickel, dacromet, black oxide or stainless: a practical way to pick the finish before corrosion picks it for you.
Machine loops, side loops, extended hooks and swivel ends, and which one your anchor point actually needs.
How a coiled strip of stainless delivers the same force over a long stroke, and where that behaviour is worth paying for.
Carbon steel, 65Mn, music wire, stainless and nitinol, with the practical trade-offs that decide which one belongs in your part.
Buyers and design engineers who need to describe a spring precisely enough to be quoted accurately, and maintenance engineers replacing a part with no drawing.
They cover spring engineering generally, with links to the parts in our catalogue that each topic applies to.
Yes. Email the part, the load and the environment and we will answer directly rather than pointing you at a guide.
If the answer is not in a guide, email the part and the problem. We answer technical questions without a sales script.