Fuwa Heavy-Duty Trailer Suspension Systems (including the American-style stamped HC86 series) are heavy-duty leaf spring mechanical suspension systems suitable for commercial semi-trailers, dump trucks, flatbed trucks, and heavy-duty transport vehicles.

Main Components and Specifications:

Stamped and Cast Hangers: High-strength front, center, and rear hangers are constructed from thick steel plates (typically 6mm, 8mm, or 10mm) to ensure structural integrity and high load-bearing capacity.

Balancer/Rocker Arm Assembly: Includes a heavy-duty center rocker arm (or balancer) equipped with a 70mm balance pin and high-wear-resistant balancer bushings, distributing weight evenly across all axles and effectively suppressing road vibrations.

Torsion Bar (Radius Arm): A fixed torsion bar (rigid bar) on one side and an adjustable torsion bar on the other for precise axle alignment and absorption of dynamic braking torque.

Leaf Spring Assembly: Utilizing high-strength multi-leaf leaf spring assemblies (typically 75mm, 90mm, or 100mm wide, in 8, 9, or 10-leaf configurations), these are connected to square or round axle beams via heavy-duty U-bolt kits and axle mounts.

Axle Layout: Available in single-axle, dual-axle, or triple-axle mechanical suspension configurations, with per-axle load capacities ranging from 13 to 16 tons.