Heavy-Duty 8-Blade 27" Dacromet-Treated Semi-Elliptical Leaf Spring (1,500kg Pair Capacity)

The Heavy-Duty 8-Blade 27" Dacromet-Treated Semi-Elliptical Leaf Spring is a high-performance commercial trailer suspension component engineered to provide heavy load support, dynamic shock damping, and superior corrosion defense for commercial transport trailers, touring caravans, heavy utility haulers, horseboxes, and marine boat trailers. Rated for a combined load capacity of 1,500 kg per pair (750 kg per individual spring assembly), this 8-blade spring stack utilizes an industry-standard 27-inch (~685 mm) eye-to-slipper span, delivering the ideal balance between high payload capability, lateral stability, and controlled ride dynamics.

To ensure longevity in corrosive operating environments, each individual leaf is treated with an advanced Dacromet (zinc-aluminum flake) anti-corrosion coating. Unlike bare mild steel or basic enamel coatings that quickly degrade, oxidize, and seize under regular exposure to road moisture, mud, or coastal salt air, Dacromet delivers four-way galvanic, passivating, and barrier protection without inducing hydrogen embrittlement. This advanced surface treatment eliminates rust bonding between blade contact faces, allowing the leaves to flex smoothly and quietly while extending maintenance intervals under harsh marine, coastal, and agricultural towing conditions.

Key Features & Benefits:

• Robust 8-Blade Multi-Leaf Stack: Multi-layer graduated spring architecture progressively absorbs heavy vertical loads and sharp roadway shocks, preventing severe axle bottoming and protecting chassis welds.

• 1,500kg Combined Axle Capacity (Per Pair): Delivers dependable load-bearing capability of up to 750 kg per individual spring, making it suitable for braked commercial trailers, heavy utility haulers, and touring chassis.

• Advanced Dacromet Anti-Corrosion Treatment: Specialized inorganic zinc and aluminum flake coating provides outstanding resistance against coastal salt spray, marine slipway washdowns, standing rainwater, and road de-icing salts.

• Prevents Inter-Leaf Pack Seizure: Corrosion-resistant surface barrier stops rust bridging and metal-to-metal bonding between leaves, maintaining natural suspension compliance and eliminating harsh spring squeak.

• Preserves Core Steel Temper (No Hydrogen Embrittlement): Non-electrolytic coating process avoids acid pickling stresses, preserving the full tensile strength, fatigue resistance, and elasticity of the spring steel.

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

• High Roll & Sway Stability: Multi-blade profile provides strong lateral and torsional rigidity, effectively stabilizing high-profile trailers, caravans, and heavy loads against body roll during highway cornering or crosswinds.

• Standard Eye-to-Slipper Orientation: Forward rolled and bushed eye secures positively to the front chassis hanger bracket for accurate axle tracking, while the rear slipper tail glides freely to allow unrestricted longitudinal travel under compression.

Ideal Applications:

• Boat & Marine Trailers: High-capacity marine trailers where frequent submersion in coastal salt water or slipway launching rapidly corrodes standard bare steel leaf packs.

• Commercial & Utility Trailers: Suspension for single- and tandem-axle freight trailers, plant equipment haulers, and contractor trailers operating in coastal or wet climates.

• Touring Caravans & Off-Road Campers: Durable, rust-resistant suspension engineered to withstand extended outdoor exposure and unpaved gravel road travel.

• Horseboxes & Livestock Transporters: Exterior suspension built to handle dynamic animal loads and withstand frequent chemical and high-pressure chassis washdowns.

• Agricultural Implements & Farm Skids: Heavy-duty running gear for mobile fertilizer bowsers, farm wagons, and site service trailers exposed to corrosive chemicals and outdoor weathering.

Product Specifications:

• Product Name: 8 Blade Spring 27" Dacromet Treated

• 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): 27 Inches (~685 mm)

• Load Rating: 1,500 kg per Pair (750 kg per Individual Spring Assembly)

• Surface Coating: Dacromet (High-Performance Zinc/Aluminum Flake Anti-Corrosion Treatment)

• Corrosion Resistance: Marine & Salt-Spray Rated (Rust & Chemical Resistant)

• 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, Boat Trailers, Horseboxes, Utility & Agricultural Vehicles

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware