Description

With a rated capacity of 1,750 kg gross axle mass, this system is ideal for commercial, agricultural, or heavy domestic trailers with 50 mm square axles. The Zinctech-coated trailer springs feature an anti-rattle leaf construction, progressive spring compression, and a longer second leaf to ensure enhanced strength and stability around the eye. All necessary mounting components are included for a comprehensive and efficient fit-out.

Key Features

  • 8-leaf Zinctech-coated slipper springs with high-load capability
  • Anti-rattle design minimises vibration and wear
  • Progressive spring compression adapts to variable loads
  • Longer second leaf provides improved structural support
  • Nylon bushes pre-installed for durability and ease of use
  • Full mounting hardware included

Applications

  • Suitable for 50 mm square axles
  • Commercial and industrial trailers
  • Agricultural transport trailers
  • Equipment and machinery trailers
  • Heavy-duty domestic trailers

Specifications

  • Load Rating: 1,750 kg gross axle mass (pair)  
  • Trailer Spring Type: Eye-to-slipper
  • Number of Leaves: 8 per spring
  • Spring Width: 50 mm
  • Leaf Thickness: 6 mm  
  • Spring finish: Zinctech coating
  • Bushes: Nylon, pre-installed

Kit inclusions

  • 60005 Springs Only 1,750 kg Zinctech 8 Leaf (1 pair)
  • 60024 Galvanised U-Bolt 133L x 51W M12 Suits 50 mm Box (4 pieces)
  • 60016 Galvanised Axle Plate to Suit 50 mm Axle (1 pair)
  • 60014 Spring Hanger Bolt M16 x 95 mm (1 pair)
  • 60015 Spring Hanger Nut M16 Nyloc (1 pair)
  • 60013 Spring Hanger 16 mm Eye, Suits 50 mm Spring (1 pair)
  • 60012 Spring Slipper, Suits 50 mm Spring (1 pair)

FAQs

What is progressive spring compression?

Unlike linear springs that compress at a constant rate, a progressive spring features leaves designed to increase stiffness as they compress. This allows for a smoother ride under light loads and greater support under heavier loads, improving trailer control and reducing component wear.

What is Zinctech coating?

Zinctech is a corrosion-resistant zinc coating applied to steel parts to extend life and reduce rust, especially useful in coastal or wet conditions.

Why is the second leaf longer?

A longer second leaf supports the main leaf and reduces stress around the eye area, helping extend the life of the spring and improve durability.

What are anti-rattle leaves?

Anti-rattle leaves are spaced at the slipper end to fit snugly inside the hanger. This reduces noise, wear, and vibration — especially useful when towing unladen or over rough ground.

Can I get axles with this kit?

Yes. You can add ready-made or custom-fabricated axles to your order. Visit our Axle Fabrication page to learn more.

Is this suitable for a tandem axle trailer?

No. Our tandem axle spring kits include additional mounting hardware and hangers that are essential for safe operation. If your trailer has dual axles, we recommend using a tandem spring kit.

Specifications

Brand: Treadway
Fixing: U-bolts (50mm)
Material: Steel
Length: 106mm eye to end
Load Rating: 1750kg
Type/Finish: Zinctech
Width: 50mm

Questions?

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