Heavy-Duty 8-Blade 46" Semi-Elliptical Leaf Spring (10,000kg Pair Capacity)

The Heavy-Duty 8-Blade 46" Semi-Elliptical Leaf Spring is an extreme-capacity, commercial-grade trailer suspension component engineered to provide heavy payload support, structural stability, and controlled shock damping for heavy transport haulers, plant trailers, industrial flatbeds, and commercial transport chassis. Engineered with a multi-leaf 8-blade stack across an elongated 46-inch (~1,168 mm) mounting span, this suspension spring is rated for an exceptional load capacity of 10,000 kg per pair (5,000 kg per individual spring assembly), purpose-built to handle severe commercial payloads across unpaved industrial access roads, long-distance highway routes, and rugged job sites.

The extended 46-inch mounting length distributes high vertical loads and dynamic road shocks across a wider chassis span, providing smoother articulation and superior deflection compared to shorter leaf packs. Constructed from oil-quenched and tempered high-tensile spring steel, the graduated leaves resist sagging, blade splaying, and fatigue under punishing cyclic loads. Built with a heavy-duty eye-to-slipper design, the front eye anchors the axle firmly in place for precise tracking, while the rear slipper end allows free expansion under full compression.

Key Features & Benefits:

• Extreme-Duty 10,000kg Combined Capacity (Per Pair): Delivers massive load-bearing support of up to 5,000 kg per individual spring, making it suitable for high-tonnage plant haulers, heavy commercial freight trailers, and multi-axle configurations.

• Extended 46-Inch Span (~1,168 mm): Long-span geometry delivers deeper vertical deflection, smoothing out harsh roadway shock and high-frequency vibrations to protect chassis welds and heavy cargo.

• 8-Blade Graduated Multi-Leaf Stack: Multi-layer construction progressively absorbs roadway shock and dynamic impacts, preventing sudden bottoming-out and protecting axle beams under peak tonnage.

• Superior Roll & Sway Resistance: Heavy-duty blade profile provides strong lateral and torsional rigidity, effectively stabilizing high-center-of-gravity machinery and heavy cargo against body roll and crosswinds.

• High-Tensile Quenched & Tempered Spring Steel: Heat-treated automotive spring steel maintains arch profile and elasticity through demanding commercial service life.

• Standard Eye-to-Slipper Mounting: Front rolled and bushed eye mounts into the forward chassis bracket for positive trailing-arm axle tracking, while the rear slipper tail glides freely to allow unrestricted longitudinal travel under load.

• Commercial Transport Reliability: Engineered to endure high cyclic stresses, heavy brake torque, and prolonged transit over corrugated, gravel, and industrial terrain.

Ideal Applications:

• Heavy Commercial & Plant Trailers: Suspension for high-payload multi-axle lowbeds, heavy machinery haulers, excavator transporters, and commercial flatbeds.

• Industrial & Mining Carriers: Extreme-duty suspension for heavy site bowsers, mobile generator platforms, and equipment skids operating in harsh industrial environments.

• Heavy Freight & Cargo Transport: High-capacity running gear for long-wheelbase transport trailers and high-tonnage enclosed haulers.

• Agricultural Implements & Bulk Trailers: Heavy-duty suspension for high-capacity farm trailers, bulk fertilizer tankers, and grain wagons.

Product Specifications:

• Product Name: 8 Blade Spring 46"

• Product Category: Suspension / Leaf Springs

• Spring Type: Heavy-Duty Semi-Elliptical Leaf Spring (Eye-and-Slipper Design)

• Number of Blades: 8 Blades

• Spring Length (Mounting Span): 46 Inches (~1,168 mm)

• Load Rating: 10,000 kg per Pair (5,000 kg per Individual Spring Assembly)

• Installation Orientation: Front Spring Eye mounts towards the front of the trailer

• Material: Quenched & Tempered High-Tensile Automotive Spring Steel

• Application Compatibility: Commercial Trailers, Plant Equipment, Agricultural Machinery, Heavy Caravans

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware