Five spring families, one engineering team
From a single prototype to repeat production, every order is reviewed by an engineer before the wire is cut.
Compression springs
Cylindrical, conical and barrel profiles in round or rectangular wire. Closed and ground ends, preset and set-removed options, stress checked at solid height.
Compression calculator →Extension springs
Fixed hooks, flat ends and movable S-ring or swivel ends. Controlled initial tension from light to heavy, with hook stress verified separately.
Extension calculator →Torsion springs
Single and double coil, straight or bent arms, defined wind direction. Torque and maximum rotation checked against the material allowable.
Torsion calculator →Die and special springs
Rectangular-wire die springs, wave springs, disc springs, spiral and constant-force springs, plus retaining rings and stamped clips to sample.
See all products →Real machines, real inspection
CNC coilers, grinding, stress relieving and a final dimensional check. Photographs are taken on our own floor, not licensed stock imagery.
- CNC coiling for wire from 0.2 mm upwards
- End grinding, stress relief and preset
- Load, rate and dimension inspection before packing
- Material certificates available on request
Thirteen free spring calculators
Use the same equations our engineers use. Enter your dimensions and working point, then send us the result for a manufacturability review.
Compression Spring Calculator
Size and verify a helical compression spring in seconds.
Open tool → HELICAL EXTENSION SPRINGExtension Spring Calculator
Calculate spring rate, initial tension, deflection and hook stress for a helical extension spring, with the working travel checked against the maximum allowable body length.
Open tool → EXTENSION SPRING WITH SWIVEL ENDSMovable Hook Extension Spring Calculator
Design extension springs with S-ring or swivel hooks that rotate 360°, so the spring stays aligned with the load direction and the end ring can be replaced.
Open tool → RECTANGULAR-SECTION COMPRESSION SPRINGDie Spring Calculator
Calculate load, compression ratio and stress for rectangular-wire die springs used in press tools and injection moulds.
Open tool → HELICAL TORSION SPRINGTorsion Spring Calculator
Calculate torque, angular rate, bending stress and maximum rotation for single-coil torsion springs with straight or bent arms.
Open tool → CONICAL COMPRESSION SPRINGConical (Tower) Spring Calculator
Design conical compression springs that telescope into a short solid height and resist lateral buckling in a compact space.
Open tool → BARREL-SHAPED COMPRESSION SPRINGBarrel Spring Calculator
Design barrel-shaped compression springs with a larger centre diameter for lateral stiffness inside a narrow bore.
Open tool → WAVE / CREST-TO-CREST SPRINGWave Spring Calculator
Calculate load and stiffness for single-turn and multi-turn wave springs made from round wire or flat strip.
Open tool → TWIN-COIL TORSION SPRINGDouble Torsion Spring Calculator
Design double-coil torsion springs, wound in the same or opposite direction, to obtain higher torque in a balanced, compact package.
Open tool → FLAT-STRIP SPIRAL SPRINGSpiral (Power) Spring Calculator
Design flat-strip spiral springs that deliver torque over many turns from a compact package.
Open tool → DISC / BELLEVILLE WASHERDisc Spring (Belleville) Calculator
Calculate load, stress and deflection for disc springs, including series and parallel stack combinations.
Open tool → EXTENSION SPRING WITH FLAT ENDSFlat-End Extension Spring Calculator
Design extension springs with flat end sections for stable clamping and a controlled, repeatable initial tension.
Open tool → FLAT-STRIP CONSTANT-FORCE SPRINGConstant Force Spring Calculator
Calculate constant force, available travel and bending stress for flat-strip constant-force springs used in reels and counterbalances.
Open tool →Quotes that account for manufacture
Design review first
We check stress, solid height, slenderness and tooling before quoting, so a low price does not hide a spring that cannot be wound.
Material choice
Music wire, oil-tempered wire, stainless 304/316, 65Mn, 60Si2Mn and other grades selected for fatigue and corrosion.
Sample, then volume
Prototype quickly, measure the real load, then release repeat production with the inspected sample as the reference.
Send a drawing or a sample
Tell us the load, the travel and the space available. We will reply with a design check, a price and a sample lead time.