Heavy-Duty 1-Blade 27" Parabolic Leaf Spring (700kg Pair Capacity / 17x45mm)

The Heavy-Duty 1-Blade 27" Parabolic Leaf Spring is a specialized high-performance trailer suspension component engineered to deliver optimal shock dampening, a smooth ride, and low-maintenance longevity for light commercial trailers, touring caravans, camping trailers, and marine boat trailers. Rated for a combined load capacity of 700 kg per pair, this single-blade parabolic assembly replaces traditional multi-leaf spring stacks with a modern, high-efficiency mono-leaf design that drastically reduces unsprung weight while providing responsive load support.

Constructed from a single, precision-tapered spring steel blade measuring 17 mm thick at the center clamp and 45 mm wide, the parabolic profile distributes bending stresses evenly across the entire 27-inch (~685 mm) span. Because it consists of an individual tapered leaf, inter-leaf friction is completely eliminated—preventing the binding, squeaking, and harsh stiffness characteristic of conventional multi-leaf packs. The open single-blade architecture also ensures that abrasive mud, gravel, road salts, and coastal slipway grit have nowhere to collect, making it an exceptional suspension choice for boat trailers and equipment operating in corrosive environments.

Key Features & Benefits:

• High-Efficiency Mono-Blade Parabolic Design: Precision-tapered single-leaf construction eliminates inter-leaf contact, friction, and binding for smooth, quiet, and responsive suspension travel.

• 700kg Combined Axle Capacity (Per Pair): Calibrated for light utility hauling, supporting up to 700 kg per axle set (350 kg per individual spring assembly).

• Minimized Unsprung Suspension Mass: Substantially lighter than conventional multi-leaf packs, allowing the axle and tires to track road imperfections accurately, which minimizes trailer bounce and extends tire life.

• Corrosion & Debris Resistant Architecture: Single-leaf design eliminates blade-on-blade gaps where road salts, sand, and moisture become trapped, preventing internal pack rust and leaf seizure.

• Ideal for Marine & Coastal Towing: Well-suited for boat trailers and personal watercraft carriers frequently submerged at launch ramps, allowing quick, thorough freshwater washdowns.

• Smoother Ride Dynamics: Progressive flex cushions delicate cargo, camping equipment, and caravan cabinetry from harsh road chatter and corrugated gravel vibrations.

• Simplified Maintenance & Visual Inspection: Fewer contact areas and individual components simplify routine pre-trip inspections and extend service life.

Ideal Applications:

• Boat & Marine Trailers: High-performance suspension for light watercraft, jet skis, and inflatable boat trailers where coastal salt water accelerates rust in traditional multi-leaf packs.

• Touring Caravans & Camper Trailers: Lightweight suspension upgrade providing a gentler ride that protects lightweight body panels, onboard appliances, and interior fittings from road shock.

• Light Commercial & Utility Trailers: Ideal for single-axle goods haulers, luggage trailers, and town runabouts requiring compliant shock absorption when towed unladen or fully loaded.

• Agricultural Implements & Farm Skids: Reliable suspension for light farm carts, mobile fuel bowsers, and site maintenance platforms operating over rough terrain.

Product Specifications:

• Product Name: Parabolic Spring 1 Blade 27" 700Kg (17x45)

• Product Category: Suspension / Parabolic Leaf Springs

• Spring Type: Tapered Mono-Leaf Parabolic Spring

• Number of Blades: 1 Blade (Mono-Leaf)

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

• Blade Dimensions: 17 mm Thickness (Center) x 45 mm Width

• Load Rating: 700 kg per Pair (350 kg per Individual Spring Assembly)

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

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware