Heavy-Duty 2-Blade 27" Parabolic Leaf Spring (1,500kg Pair Capacity / 10/13x45mm)

The Heavy-Duty 2-Blade 27" Parabolic Leaf Spring is a high-capacity, commercial-grade trailer suspension component engineered to deliver optimal impact absorption, improved high-load ride dynamics, and long-term durability for transport trailers, heavy utility carriers, touring caravans, horseboxes, and boat trailers. Rated for a combined load capacity of 1,500 kg per pair, this 2-blade parabolic assembly replaces cumbersome multi-leaf spring stacks, providing load-carrying performance equivalent to traditional 8-blade springs while significantly reducing unsprung suspension mass.

Manufactured with a tapered blade profile (10/13 mm thickness x 45 mm width), parabolic springs touch only at the center clamping block and the spring eyes, eliminating the full-length surface friction inherent to conventional multi-leaf packs. This tapered geometry allows the leaves to flex freely, producing a progressive suspension response that dampens road shock, resists severe bottoming-out under load, and minimizes high-frequency road vibrations transmitted through the chassis. The open design also prevents abrasive grit, mud, road salt, and coastal moisture from packing between leaves, making it a reliable, low-maintenance suspension solution for marine slipways, rough gravel tracks, and demanding commercial hauling.

Key Features & Benefits:

• High-Capacity 2-Blade Parabolic Architecture: Precision-tapered leaves distribute bending stresses evenly across the spring span, providing reliable 1,500 kg load support without excessive stiffness or leaf binding.

• Equivalent 8-Blade Load Support (1,500kg / Pair): Directly matches the load rating of standard 8-blade 27" leaf packs while reducing physical weight and profile bulk on the axle line.

• Minimized Unsprung Chassis Mass: Lighter overall construction improves tire contact with uneven road surfaces, reducing bounce and promoting longer tire and wheel bearing life.

• Friction-Free Flexing: Non-contact leaf design eliminates inter-blade metal-on-metal friction, delivering quiet operation, smoother empty-tow ride quality, and consistent flex.

• Corrosion & Debris Resistance: Open blade spacing prevents sand, gravel, and corrosive road grime from getting trapped between leaves, preventing leaf pitting, premature corrosion, and leaf seizure.

• Marine & Coastal Ready: Suited for boat trailers and marine transport equipment frequently submerged at launch ramps, allowing thorough freshwater washdowns.

• Simplified Field Maintenance: Fewer contact points mean fewer friction-induced wear areas, reducing maintenance downtime and simplifying pre-trip visual safety checks.

Ideal Applications:

• Commercial & Plant Trailers: Suspension for heavy tandem-axle flatbeds, plant machinery haulers, and commercial cargo trailers.

• Boat & Marine Trailers: High-capacity marine trailers where salt water immersion and abrasive sand quickly compromise conventional multi-leaf spring packs.

• Off-Road Caravans & Campers: Heavy expedition trailers and overland campers requiring responsive suspension that shields onboard equipment and cabinetry from road shock.

• Horseboxes & Livestock Transporters: Exterior suspension built to handle dynamic animal loads and endure routine chassis washdown environments.

• Agricultural Implements & Farm Trailers: Chassis suspension for tractor-drawn machinery, chemical tanks, and site service trailers operating on unpaved terrain.

Product Specifications:

• Product Name: Parabolic Spring 2 Blade 27" 10/13x45 – 1,500Kg

• Product Category: Suspension / Parabolic Leaf Springs

• Spring Type: Tapered Parabolic Leaf Spring

• Number of Blades: 2 Blades

• Spring Length (Eye-to-Eye / Overall): 27 Inches (~685 mm)

• Blade Dimensions: 10/13 mm Thickness x 45 mm Width

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

• Equivalent Conventional Pack: 8-Blade 27" Leaf Spring

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

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware