Vehicles & two-wheelers

Parabolic Leaf Spring for Trailers

<p style="line-height: 2em;"><span style="color: rgb(15, 17, 21); font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Roboto, Oxygen, Ubuntu, Cantarell, &quot;Open Sans&quot;, &quot;Helvetica Neue&quot;, sans-serif; background-color: rgb(255, 255, 255);">The Parabolic Leaf Spring is a modern lightweight suspension solution featuring fewer leaves with a tapered des…

SupplierShijiazhuang Trust Vehicle Industry Co., Ltd.www.cntrustvehicle.com

About this product

Product information from the supplier.

Technical Specifications

ParameterSpecification
TypeParabolic Leaf Spring (Tapered / Variable Cross-Section)
MaterialHigh-strength Spring Steel (50CrV / SUP11)
Leaf Count1 – 4 leaves (typically 2-3)
Width70 mm / 80 mm / 90 mm / 100 mm
Length800 mm – 2,000 mm (customizable)
Arc Height80 mm – 250 mm (customizable)
Load Capacity10 – 30 tons per set
Surface FinishPowder coating / Epoxy coating / E-coating
StandardGB/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.