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Taper Spring – Conical Compression for Low Solid Height
About the Product
A **Taper Spring** (or conical compression spring) is a helical spring characterized by its continually decreasing coil diameter from one end to the other. This unique, tapered shape allows each coil to progressively nest inside the next when compressed. The primary benefit of this design is an extremely **low solid height**, often reduced to the thickness of just two wire diameters. Furthermore, taper springs typically exhibit a **progressive spring rate**, where the resistance increases as the larger coils begin to bottom out, making them ideal for applications requiring increasing stiffness as the load grows.
- Coils nest completely for ultra-low solid height.
- Offers a progressive (non-linear) spring rate.
- Enhanced lateral stability compared to straight helical springs.
- Excellent for applications with limited vertical space or travel.
Our custom-engineered Taper Springs are manufactured using high-precision coiling techniques to guarantee consistent taper angles and coil spacing. They are widely specified in automotive suspension systems, specialized valves, electrical devices, and battery contacts where their compact fully compressed height provides a distinct mechanical advantage. We work with various spring materials, including music wire, stainless steel, and chrome vanadium, depending on the required operating environment.
Technical Specifications
Characteristics: Conical shape, open coils, progressive rate, minimal solid height.
Measurements: Wire Diameter: 0.3{mm} – 6{mm}. Large OD (max), Small OD (min), Free Length (L_f).
Configurations: Open or closed ends, ground or unground, varied taper angle.
Key Parameters: Number of active coils, wire diameter (d), Solid Height (L_s), Initial Tension (if applicable).
Rate or Stiffness: Progressive (non-linear). Rate increases as coils telescope and bottom out.
Unit of Measure: mm, N/mm (Non-linear relationship).
Service Life: High cycle life due to stress distribution along the taper.
Tolerances: Custom tolerances based on {Spring Index (C)} and application criticality.
Applications: Battery contacts, automotive clutch and brake assemblies, joystick mechanisms, and pressure relief valves.
Ready to discuss your custom spring requirements? Contact us now