Heavy-Duty 45 x 170mm Square Axle Leaf Spring Mounting Kit (Galvanised)

The Heavy-Duty 45 x 170mm Square Axle Leaf Spring Mounting Kit is a complete, commercial-grade suspension installation and axle-clamping hardware package engineered to anchor semi-elliptical leaf springs securely to solid 45 mm square beam trailer axles. Sized with extended 170 mm length square-bend U-bolts, this mounting assembly accommodates thicker, multi-blade spring stacks (typically 44.5 mm wide leaves ranging from medium to heavy multi-leaf configurations) across commercial freight trailers, utility haulers, touring caravans, horseboxes, and agricultural machinery.

Manufactured from high-tensile structural steel, all components in this kit feature a protective corrosion-resistant finish designed to withstand harsh outdoor weathering, chemical washdowns, mud, and road spray. The heavy-gauge 5-hole U-bolt clamping plates distribute mechanical clamping force evenly around the square axle beam and leaf pack, locking the axle positively in place to prevent axle tube rotation, spring seat displacement, and dangerous wheel misalignment under severe braking loads or rough-road corrugations.

Key Features & Benefits:

• Engineered for 45mm Square Axle Beams: Precision square-profile U-bolts fit snugly over standard 45 mm square solid or tubular axle beams, ensuring full contact across all four flats to prevent axle twist.

• Extended 170mm Clamping Depth: Accommodates high-capacity multi-leaf spring assemblies, heavy overload packs, and standard axle tie plates without running short of bolt thread.

• Reinforced 5-Hole Tie Plates: Heavy-duty stamped steel clamping plates feature a dedicated center hole to seat the spring leaf center-pin head, locking the spring pack firmly against the axle assembly.

• Complete Installation Assembly: Includes all primary hardware required to secure one axle side—extended U-bolts, heavy-duty nuts, slotted 5-hole tie plates, and weld-on chassis hanger brackets.

• Corrosion-Resistant Protective Finish: Guarded against moisture, road salts, agricultural fertilizers, and abrasive gravel spray for long service intervals in outdoor environments.

• Superior Axle Restraint: High-tensile U-bolt threads withstand high torque ratings, maintaining continuous clamping pressure to eliminate looseness caused by dynamic vibration over washboard routes.

Ideal Applications:

• Commercial & Utility Trailers: Clamping suspension for single- and tandem-axle utility trailers, flatbeds, and plant equipment carriers utilizing 45 mm square axles.

• Touring Caravans & Camper Trailers: Robust running-gear mounting hardware for off-road campers, bush trailers, and recreational caravans.

• Horseboxes & Livestock Transporters: Reliable axle attachment built to handle high dynamic shock loads and frequent chassis washdowns.

• Agricultural Implements & Farm Trailers: Axle installation on mobile chemical bowsers, fertilizer spreaders, and heavy utility wagons.

• Chassis Fabrication & Suspension Upgrades: Ideal replacement or OEM hardware for trailer manufacturers, fabricators, and repair workshops.

Kit Contents:

• 2 x Heavy-Duty Square U-Bolts (45 mm Width x 170 mm Length)

• 4 x High-Tensile Fastening Nuts

• 2 x 5-Hole Heavy-Duty U-Bolt Clamping Plates

• 2 x Weld-On Chassis Spring Hanger Brackets

Product Specifications:

• Product Name: 45 x 170mm Square Spring Mounting Kit

• Product Category: Suspension / Spring Mounting Kits & Hardware

• Axle Beam Compatibility: 45 mm Square Solid or Beam Axles

• Spring Leaf Width Compatibility: Standard 44.5 mm Wide Leaf Springs

• U-Bolt Dimensions: 45 mm Internal Span x 170 mm Total Inside Leg Length

• U-Bolt Profile: Square Bend (Formed for Square Beam Axles)

• Clamping Plate Configuration: 5-Hole Heavy-Duty Clamping Base (Includes Center-Pin Relief Hole)

• Material: High-Tensile Structural Automotive Grade Steel

• Finish: Protective Anti-Corrosion Plating / Galvanised Treatment

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

• Condition: Brand New Heavy-Duty Commercial Vehicle Hardware