Custom Special‑Shaped Springs: Core Precision Components for Advanced Manufacturing
With the rapid development of electronics, new‑energy vehicles, precision machinery and medical‑device industries, standard coil springs are often unable to satisfy the special working‑condition requirements of numerous equipment and components.
Custom special‑shaped springs have become indispensable elastic components within modern industrial supply chains.
Unlike general helical coil springs, special‑shaped springs deliver dedicated functions through custom wire‑bending and coiling structures, covering a wide variety of product types. Thanks to long‑term industry accumulation, a complete non‑standard custom‑manufacturing system has been established. Products fall into four major categories:
1. Wire‑Formed Special‑Shaped Springs — High‑Volume Market Demand
Wire diameter ranges from 0.1 mm to 10 mm, custom‑produced according to end‑product requirements.
Thin‑wire material of 0.1‑2 mm is widely adopted in the electronics industry for manufacturing various circlips and micro bow springs. Shaft circlips feature an inner diameter of 3‑50 mm, while bore circlips have an outer diameter of 5‑60 mm. For bow springs, wire diameter is 0.2‑1.5 mm and bow height is controlled between 2‑10 mm. They are extensively applied for mouse contact points and keyboard key rebound mechanisms, winning long‑term orders from large‑scale electronics manufacturers.
For automotive and home‑appliance components, medium‑thickness wire of 1‑8 mm is mostly processed into hook‑style clip springs with overall lengths of 5‑50 mm, used for fast assembly and positioning of plastic parts.
Molds and construction machinery operate under heavy‑duty conditions. Thick wire ranging from 5‑10 mm is selected, mainly providing buffering and shock‑absorbing performance for equipment.
2. Spiral Power Springs — Essential for New‑Energy & Automation Equipment
Spiral power springs are widely used in automotive assemblies and semiconductor automation equipment.
Adjustable parameter scope: 3‑50 coils, steel strip width 1‑50 mm, steel strip thickness 0.1‑2 mm, stored‑energy torque ranging from 0.01 N·m up to 50 N·m.
Power springs measuring 8 mm in width, 0.5 mm in thickness with 12 coils are commonly fitted in car seats to realize automatic seat‑back return. Miniature power springs are deployed in semiconductor packaging equipment. Steel‑strip thickness can go as thin as 0.15 mm with a width of merely 1.2 mm. They serve for precise torque control of rotary components, with machining tolerance kept within 0.01 mm.
3. Special‑Form Torsion Springs — Key Components for Robotics & Automotive Electronics
Standard straight‑arm torsion springs cannot adapt to complex, compact installation spaces. Custom‑order demands remain consistently high within robotics and connector industries.
Typical specifications: wire diameter 0.3‑6 mm, single‑arm length 5‑300 mm, torsion angle from 0° to 360°, output torque 0.1‑20 N·m.
L‑shaped torsion springs (wire diameter 2 mm, dual‑arm lengths 30 mm and 40 mm) are frequently implemented on robot joints to stabilise rotational damping. Lug‑style custom torsion springs with an outer diameter of 4 mm deliver stable spring force for high‑speed connector contacts. They maintain consistent performance after more than 100 000 plug‑in cycles and are well‑suited for high‑frequency operating scenarios.
4. Combined & Special‑Cross‑Section Springs for High‑End Manufacturing
Products in this category feature high customisation levels and are primarily applied in sophisticated fields: medical devices, power batteries and large‑size industrial molds.
Multi‑layer combined springs consist of 2‑5 individual spring units assembled together, overall height 10‑100 mm. Spring forces are superimposed upon release, mostly utilised for buffering and resetting heavy‑load molds. Integrated springs fitted with brackets and guide rods have total lengths from 20‑200 mm. They are widely installed in surgical instruments to achieve opening‑closing rebound motion.
Rectangular‑cross‑section springs represent critical components for new‑energy battery packs. Cross‑section dimensions range from 0.2 mm × 0.5 mm to 2 mm × 5 mm, delivering buffer protection for battery cells. Annual market demand remains substantial across the power‑battery sector.
From micron‑scale micro precision springs to heavy‑duty industrial large‑wire springs, all items can be custom‑made based on customer drawings or physical samples. Our mature non‑standard processing capabilities continuously supply highly‑reliable fundamental elastic components for electronics, automotive, medical and high‑end equipment‑manufacturing sectors.
We provide custom solutions for all types of non‑standard special‑shaped springs. Feel free to contact us for technical specifications and prototype sampling.