Heavy-Duty 10-Blade 27" Dacromet-Treated Semi-Elliptical Leaf Spring

The Heavy-Duty 10-Blade 27" Dacromet-Treated Semi-Elliptical Leaf Spring is a high-capacity commercial vehicle suspension component engineered to deliver maximum load-carrying capability, structural stability, and superior corrosion resistance for heavy-duty commercial trailers, industrial plant haulers, livestock transporters, and boat trailers. Built in an ultra-robust 10-blade configuration across a standard 27-inch (~685 mm) eye-to-slipper / eye-to-eye span, this multi-leaf spring assembly is designed to handle severe axle loads, stabilize top-heavy cargo, and withstand punishing hauling conditions over unpaved roads and corrugated industrial tracks.

To combat harsh operating environments, each leaf blade is individually treated with an advanced Dacromet (zinc-aluminum flake) anti-corrosion coating. Unlike conventional painted or bare steel leaf packs that rapidly rust and seize when exposed to wet road grime or coastal salt spray, Dacromet treatment provides four-way protection—barrier, galvanic, passivating, and self-repairing—without causing hydrogen embrittlement in the high-tensile spring steel. This ensures smooth inter-leaf movement, consistent damping, and an extended operational working life under severe coastal, marine, and agricultural operating conditions.

Key Features & Benefits:

• High-Capacity 10-Blade Architecture: Multi-leaf design distributes massive vertical payloads evenly across ten graduated spring steel leaves, minimizing leaf fatigue and preventing severe axle bottoming under peak weight.

• Advanced Dacromet Anti-Corrosion Treatment: High-performance inorganic zinc and aluminum flake coating provides exceptional resistance against salt spray, marine washdowns, road de-icing salts, and agricultural chemical runoff.

• Prevents Inter-Leaf Pack Seizure: Corrosion-resistant surface treatment prevents rust bonding and oxidation buildup between blade contact faces, preserving natural leaf flex and smooth shock absorption.

• No Hydrogen Embrittlement: Applied without aggressive acid pickling or high-stress plating baths, preserving the full mechanical strength, temper, and fatigue life of the spring steel.

• Standard 27-Inch Profile: Built to standard 27" mounting dimensions, allowing straightforward integration into standard commercial spring hanger brackets, slipper channels, and rocker equalizer assemblies.

• Heavy-Duty Lateral & Roll Stability: Multi-layer spring stack resists chassis roll, sway, and dynamic shifts during high-speed cornering and transit over rough terrain.

• Commercial-Grade Toughness: Engineered to endure gravel-road blast, heavy cyclic shock loads, and high-impact industrial transport cycles.

Ideal Applications:

• Heavy Commercial & Plant Trailers: Suspension for high-payload tandem- and triple-axle plant trailers, bobcat haulers, mini-excavator carriers, and industrial flatbeds.

• Boat & Marine Trailers: High-capacity marine trailers where repeated submersion in salt water or coastal launch environments causes premature rusting in standard springs.

• Horseboxes & Livestock Transporters: Multi-leaf suspension built to handle dynamic animal loads and endure frequent high-pressure chemical washdown cycles.

• Heavy Utility & Agricultural Trailers: Suspension setups for fertilizer spreaders, chemical bowsers, bulk produce wagons, and mobile generator trailers.

• Off-Road Commercial Transport: Heavy-duty overland trailers operating on unpaved roads, corrugated washboard routes, and remote worksites.

Product Specifications:

• Product Name: 10 Blade Spring 27" Dacromet Treated

• Product Category: Suspension / Multi-Leaf Springs

• Spring Type: Heavy-Duty Semi-Elliptical Leaf Spring

• Number of Blades: 10 Blades

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

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

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

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

• Application Compatibility: Heavy Trailers, Caravans, Boat Trailers, Horseboxes, Utility & Agricultural Vehicles

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware