Heavy-Duty 2-Blade 27" Parabolic Leaf Spring (1,250kg Capacity / 14x50mm)

The Heavy-Duty 2-Blade 27" Parabolic Leaf Spring is an advanced trailer suspension component engineered to deliver optimal shock absorption, reduced unsprung weight, and superior ride dynamics for commercial goods trailers, touring caravans, camping trailers, and marine boat trailers. Rated for an axle capacity of 1,250 kg per pair, this 2-blade parabolic assembly replaces conventional heavy multi-leaf packs with a modern, high-efficiency tapered dual-leaf design that provides smooth, progressive deflection while maintaining high load-bearing strength across an industry-standard 27-inch (~685 mm) mounting span.

Constructed from premium high-tensile spring steel leaves measuring 50 mm wide with a 14 mm central thickness profile, the parabolic design features precision-tapered leaves that touch only at the center clamping area and the outer ends. By eliminating face-to-face friction across the length of the leaves, this configuration eliminates internal binding, squeaking, and the harsh stiffness common to standard multi-leaf packs. The open spacing between leaves also prevents abrasive mud, road grime, salt, and sand from becoming trapped, making it especially effective for marine trailers subjected to coastal slipway submersion and harsh outdoor washdowns.

Key Features & Benefits:

• High-Efficiency 2-Blade Parabolic Architecture: Precision-tapered dual-leaf design eliminates continuous inter-leaf contact, significantly reducing internal friction for a supple, responsive, and quiet ride.

• 1,250kg Axle Load Capacity (Per Pair): Calibrated for medium-duty commercial, recreational, and marine hauling, supporting up to 625 kg per individual spring assembly.

• Substantially Reduced Unsprung Weight: Lighter than conventional multi-leaf spring stacks, enabling tires to track uneven road surfaces more effectively, reducing trailer hop and extending tire life.

• Debris & Corrosion Resistant Design: Open leaf spacing eliminates tight crevices where road moisture, dirt, and coastal salt spray accumulate, simplifying maintenance and extending working life.

• Optimized for Marine & Coastal Towing: Outstanding choice for boat and watercraft trailers frequently submerged during launching, allowing quick and thorough freshwater washdowns.

• Greater Flexibility & Deflection: Resists compression fatigue while providing progressive flex that cushions sensitive cargo, caravan cabinetry, and camping equipment from road vibrations.

• Robust 50x14mm Blade Profile: Wide 50 mm footprint and 14 mm leaf gauge provide strong lateral rigidity to resist trailer body roll and sway during cornering.

Ideal Applications:

• Boat & Marine Trailers: High-performance suspension for runabouts, ski boats, and commercial watercraft trailers where saltwater exposure accelerates rust in traditional multi-leaf springs.

• Touring Caravans & Camper Trailers: Suspension upgrade providing smooth damping that protects appliances, interior joinery, and sensitive electronics from corrugated road shock.

• Commercial & Utility Trailers: Running gear for single- and tandem-axle goods trailers, luggage haulers, and general trade trailers requiring smooth towing whether loaded or unladen.

• Agricultural Implements & Farm Skids: Long-life suspension for field service trailers, mobile water bowsers, and farm equipment operated over uneven terrain.

Product Specifications:

• Product Name: Parabolic Spring 2 Blade 27" (14x50)

• Product Category: Suspension / Parabolic Leaf Springs

• Spring Type: Heavy-Duty Tapered Dual-Leaf Parabolic Spring

• Number of Blades: 2 Blades

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

• Blade Dimensions: 50 mm Width x 14 mm Thickness

• Load Rating: 1,250 kg per Pair (625 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: Trailers, Caravans, Boat Trailers, Utility & Agricultural Vehicles

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware