Heavy-Duty 10-Blade 27" Semi-Elliptical Leaf Spring (1,800kg Pair Capacity)

The Heavy-Duty 10-Blade 27" Semi-Elliptical Leaf Spring is a high-capacity commercial trailer suspension component engineered to provide robust payload support, superior roll resistance, and structural fatigue protection for medium-to-heavy commercial freight trailers, heavy-duty utility haulers, touring caravans, and industrial transport chassis. Rated for an axle load capacity of 1,800 kg per pair (900 kg per individual spring assembly), this 10-blade spring stack utilizes an industry-standard 27-inch (~685 mm) mounting span to deliver maximum load-bearing capability within a compact suspension footprint.

Constructed from oil-quenched and tempered high-tensile automotive spring steel, the dense 10-blade graduated stack provides progressive resistance to severe vertical roadway impacts and dynamic axle loads. This multi-layered design prevents bottoming-out under heavy payloads while offering enhanced lateral and torsional stiffness to control body roll, axle steer, and dynamic trailer sway during high-speed highway cornering or when transporting high-center-of-gravity cargo. Built in a classic eye-to-slipper layout, the rolled forward eye anchors securely into the front chassis hanger for accurate axle tracking, while the rear slipper tail slides smoothly within the rear slipper channel to allow unrestricted longitudinal expansion under heavy compression.

Key Features & Benefits:

• High-Capacity 1,800kg Combined Rating (Per Pair): Engineered for medium-to-heavy commercial transport, providing up to 900 kg of load-bearing support per individual spring assembly across single- or tandem-axle chassis configurations.

• 10-Blade Graduated Multi-Leaf Stack: Dense 10-leaf architecture delivers progressive deflection, absorbing high-magnitude shock loads and protecting chassis crossmembers, welds, and axles from stress fatigue.

• Industry-Standard 27-Inch Span (~685 mm): Standard dimensions ensure direct drop-in compatibility with commercial slipper spring chassis hangers and standard axle tie-down hardware.

• Superior Lateral Stiffness & Roll Control: Multi-blade profile resists severe lateral forces, substantially reducing trailer body roll and sway during lane changes, cornering, and in strong crosswinds.

• High-Tensile Quenched & Tempered Spring Steel: Oil-quenched and heat-treated automotive-grade steel maintains camber height, elasticity, and resistance to sagging over demanding commercial duty cycles.

• Standard Eye-to-Slipper Articulation: Forward rolled and bushed spring eye mounts directly into the front hanger bracket for precise axle alignment, while the rear slipper tail glides freely inside the rear slipper guide.

• Commercial-Grade Durability: Designed to withstand cyclic shock loads and rough transit across corrugated gravel roads, construction sites, and highway networks.

Ideal Applications:

• Commercial & Freight Trailers: Heavy running gear for single- and tandem-axle flatbeds, plant trailers, box trailers, and enclosed cargo haulers.

• Heavy Utility & Plant Trailers: Suspension for mini-excavator carriers, compressor trailers, contractor flatbeds, and mobile equipment platforms.

• Touring Caravans & Campers: Provides stable, heavy-duty load support for large off-road caravans and adventure campers carrying onboard water, fuel, and equipment.

• Livestock Transporters & Horseboxes: High-capacity running gear built to handle dynamic animal movement while minimizing chassis lean and trailer sway.

• Agricultural Implements & Farm Wagons: Running gear for field service carts, mobile diesel bowsers, and farm transport trailers operating over rough terrain.

Product Specifications:

• Product Name: 10 Blade Spring 27"

• Product Category: Suspension / Leaf Springs

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

• Number of Blades: 10 Blades

• Spring Length (Mounting Span): 27 Inches (~685 mm)

• Load Rating: 1,800 kg per Pair (900 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, Caravans, Horseboxes, Utility & Agricultural Vehicles

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware