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The Parabolic Leaf Spring is a modern lightweight suspension solution featuring fewer leaves with a tapered design (thicker at the center, thinner at the ends). This innovative design reduces overall vehicle weight while providing a smoother, more comfortable ride compared to conventional multi-leaf springs. Manufactured from high-strength spring steel, the parabolic spring delivers excellent fatigue resistance and is increasingly popular in modern trailer and truck applications where weight reduction and ride quality are priorities.
Description
| Parameter | Specification |
|---|---|
| Type | Parabolic Leaf Spring (Tapered / Variable Cross-Section) |
| Material | High-strength Spring Steel (50CrV / SUP11) |
| Leaf Count | 1 – 4 leaves (typically 2-3) |
| Width | 70 mm / 80 mm / 90 mm / 100 mm |
| Length | 800 mm – 2,000 mm (customizable) |
| Arc Height | 80 mm – 250 mm (customizable) |
| Load Capacity | 10 – 30 tons per set |
| Surface Finish | Powder coating / Epoxy coating / E-coating |
| Standard | GB/T 19844 / ISO 18137 compliant |
Key Advantages
Lightweight Design – Up to 30-40% lighter than conventional multi-leaf springs, improving fuel efficiency and payload capacity.
Smoother Ride Quality – Tapered design provides progressive spring rate, offering superior shock absorption and ride comfort.
Excellent Fatigue Resistance – High-strength material and heat treatment ensure long service life under heavy loads.
Reduced Friction – Fewer leaves mean less inter-leaf friction, resulting in quieter operation and longer component life.
Modern OEM Choice – Increasingly used as original equipment on modern trucks and trailers for weight savings and performance.
