Compression springs (Coil springs)

Technical Data Mat EN 10270-1 - type of material d 0.2 mm Wire diameter D 2.9 mm Mean coil diameter Dd 2.3 mm maximum diameter of mandrel De 3.1 mm Outer coil diameter Detol 0.25 mm (+/-) tolerances of outer coil diameter Dh 3.4 mm minimum diameter of bush F1tol N (+/-) tolerance of prestressed spring force F2tol N (+/-) tolerance of loaded spring force Fn 0.46 N maximum force in static use Fntol 0.1 N (+/-) tolerance of maximum force in static use Lk mm buckling length L0 7.5 mm unstressed spring length L0tol 0.96 mm (+/-) tolerance of unstressed spring length

Dimensions Wire diameter: from 0,2 mm Spring geometry after consultation Material Stainless steel Copper alloy Customized solutions Coating Additional coatings through external services (e. g. gold-plated, silver-plated, tin-plated) Specialities Highest precision because of laser-welded spring ends Optimal contact properties because of inclined coils Automated manufacturing Customer specific packaging Rapid prototyping

While Coiled Spring Pins are extremely versatile self-retaining fasteners that can be used for many different functions, SPIROL has designed several series of Coiled Pins to meet the nuances and performance requirements of some particular niche applications. These Coiled Spring Pins are variations of our standard product either manufactured from special material, have a special finish or undergo specific processing to meet performance, corrosion, compatibility and assembly requirements for the specific application. These pre-designed application-specific series of Coiled Pins help companies shorten the design cycle to confidently launch their product quickly to their market with a pinning solution that has been tested and proven within their assembly.

Production to order – also with special-purpose materials as required: We only produce in accordance with customer specifications. Compression springs can assume a wide variety of designs and forms. Our production facilities include compression springs with wire thicknesses in the range of 0.30 to 3.00 mm with abraded ends and in the range of 0.10 to 4.00 mm with unabraded ends. Even extremely strict tolerances regarding length and strength are adhered to in our compression spring production facility. Special-purpose materials that meet specific requirements can also be integrated into production without any problems. Wire materials: All standard spring steel wires in accordance with EN 10270. Non-ferrous wires made of copper, brass and bronze. Special alloys such as: Hasteloy, CuNi44, NbZr1, TaW2. Other materials on request.