Heavy-Duty 10-Blade 36" Semi-Elliptical Leaf Spring (2,500kg Pair Capacity)

The Heavy-Duty 10-Blade 36" Semi-Elliptical Leaf Spring is a high-capacity, extended-span trailer suspension component engineered to provide robust payload support, progressive road damping, and superior towing stability for heavy commercial transport trailers, large touring caravans, equipment haulers, and agricultural platforms. Rated for a combined axle capacity of 2,500 kg per pair (1,250 kg per individual spring assembly), this 10-blade spring assembly utilizes an elongated 36-inch (~914 mm) mounting span to deliver a smoother, more compliant ride compared to shorter leaf packs while carrying substantial commercial loads.

Constructed from ten graduated leaves of automotive-grade high-tensile spring steel, the elongated arc distributes vertical shock and dynamic axle loads across a broader chassis footprint. This configuration significantly reduces high-frequency road vibrations, eliminates erratic rebound bounce, and provides progressive resistance against bottoming out under demanding payloads over rough gravel routes, potholes, and highway expansion joints. Designed in a standard eye-and-slipper layout, the rolled forward eye anchors securely into the front chassis bracket for positive trailing-arm axle geometry, while the rear slipper tail slides smoothly inside the rear hanger channel to allow unrestricted longitudinal expansion during compression.

Key Features & Benefits:

• High-Capacity 2,500kg Combined Rating (Per Pair): Delivers dependable load-bearing capability supporting up to 1,250 kg per individual spring assembly across heavy single- or tandem-axle configurations.

• Extended 36-Inch Span (~914 mm): Longer arch length provides increased suspension travel and deeper deflection compared to standard 27" springs, smoothing out roadway shock to protect chassis welds and sensitive cargo.

• 10-Blade Graduated Multi-Leaf Stack: Dense multi-layer construction progressively absorbs vertical road impacts and cyclic dynamic shock, preventing structural stress fatigue in trailer crossmembers and axle beams.

• Controlled Articulation & Reduced Rebound: Elongated spring arc minimizes trailer hopping and vibration when running lightly loaded or unladen, improving high-speed tracking and stability behind the tow vehicle.

• High-Tensile Quenched & Tempered Spring Steel: Oil-quenched and heat-treated to resist fatigue failure, inter-leaf cracking, and loss of arch height over long-term, high-mileage use.

• Standard Eye-to-Slipper Orientation: Front rolled and bushed spring eye mounts directly into the forward chassis hanger for positive axle alignment, while the rear slipper tail glides freely inside the slipper channel to allow unrestricted longitudinal travel under load.

• Superior Roll & Tracking Stability: Multi-leaf architecture provides high lateral rigidity to control trailer body roll, dynamic swaying, and shifting in high-center-of-gravity loads.

Ideal Applications:

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

• Touring Caravans & Large Off-Road Campers: Extended-span suspension delivering a compliant, stable ride that cushions interior cabinetry, appliances, and onboard fittings against prolonged road vibration.

• Plant & Equipment Trailers: Running gear for mini-excavator carriers, compressor trailers, contractor flatbeds, and mobile equipment platforms.

• Livestock Transporters & Horseboxes: Running gear built to support dynamic animal movement while reducing body roll and trailer sway over rough roads.

• Agricultural Implements & Farm Wagons: Durable running gear for field service carts, bulk wagons, and farm transport trailers operating over uneven terrain.

Product Specifications:

• Product Name: 10 Blade Spring 36"

• 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): 36 Inches (~914 mm)

• Load Rating: 2,500 kg per Pair (1,250 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