Sichuan Huayu Announces High-Performance Leaf Spring Solutions for Global Commercial Vehicles

Sichuan, China — August 26, 2025 — Sichuan Huayu Vehicle Leaf Spring Co., Ltd. (Huayu) today unveiled an upgraded range of leaf springs for heavy-duty truck suspension, semi-trailer suspension, and bus/coach suspension. The portfolio covers parabolic leaf springs (tapered) and multi-leaf springs (conventional), engineered with robust spring steel and controlled quench & temper heat treatment to deliver stable load rating, high-cycle fatigue strength, and reliable corrosion resistance.

What Sets Huayu Leaf Springs Apart

• Durability & Fatigue Life: Full-coverage shot-peened leaf springs with optional stress peening and presetting improve endurance under repeated loads; precise hardness and deflection checks safeguard consistency.

• Weight & Ride Comfort:Parabolic leaf springs with tapered sections cut unsprung mass while maintaining design spring rate and free camber for better ride and handling.

• Surface Protection: Multi-layer anti-corrosion coating options including E-coating (electrophoretic coating) and powder coating enhance rust resistance and stone-chip durability in harsh climates.

• NVH & Wear Control: Interleaf liners (nylon/graphite anti-friction), optimized clamps and center bolts reduce squeal and inter-leaf wear.

• Tight Dimensional Control: Precision spring eye forming (rolled/forged), arch control, and hole alignment simplify installation and preserve axle geometry. Double-eye, slipper, and military wrap options available.

• OEM & Aftermarket Ready: OEM leaf spring, OE replacement leaf spring, and aftermarket leaf spring programs with reverse engineering, CAD/CAE validation, drawings, and labels.

Product Range & Typical Specs (options)

• Types: Parabolic leaf spring, multi-leaf spring, helper leaf, overload spring, trailer leaf spring, truck leaf spring, bus suspension spring, LCV/pickup leaf spring.

• Materials (as specified): 60Si2MnA, 55CrMnA, SAE 5160H, SUP9/SUP9A or equivalent spring steels.

• Sizes: Leaf width 70/75/90/100/120 mm; thickness 8–20 mm; custom free length/camber, number of leaves.

• Hardware: Bushings (rubber/polyurethane/bronze), U-bolt sets, rebound clips, spacers.

• Axle ratings (typical): For 13 T/16 T/20 T trailer axles and corresponding heavy truck axles (customizable to application).

Manufacturing Strength

End-to-end process control covers cutting, heating, eye-forming, quenching, tempering, shot peening, parabolic taper grinding, presetting, E-coating/powder coating, assembly, and final inspection. In-process hardness/deflection checks and 100% visual inspection of critical features support repeatable leaf spring quality.

Applications & Global Fitment

Designed for dump trucks/tippers, tractors, semi-trailers, tankers, flatbeds, buses/coaches, light commercial vehicles, and specialized/off-road equipment. Coverage targets mainstream platforms across Asia, Europe, and the Americas, enabling distributors to stock proven truck leaf spring and trailer leaf spring references.

Reliable Supply & Service

Flexible MOQs, stable lead times, and clear documentation (drawings, OE cross-reference, barcode/box labels). Technical support helps match OE replacement leaf spring specs—rate, arch, eye size, and bushing type—for quick drop-in fitment.

“We build leaf springs fleets can trust—season after season,” said Presodent He. “Process discipline plus customer-specific tuning is how we create value on real roads.”