Description

This 1,750 kg straight trailer axle is engineered for hydraulic disc braking systems and built to suit trailers requiring a 5x114.3" PCD hub configuration. The axle is fabricated from 50x50 mm box section steel with 5 mm wall thickness and hot dip galvanised for long-term corrosion resistance. Cast-iron brake calipers and hub-mounted hydraulic disc brakes deliver reliable stopping power for heavier loads.

Need a custom axle? Use our online axle builder to get a quote. Or let us know your axle dimensions when ordering by email or phone.

Key Features

  • 1,750 kg load rating  
  • Hot dip galvanised axle for enhanced durability
  • Suits 5x114.3" PCD wheel fitment
  • Box-section axle provides a lighter construction without compromising strength
  • Cast iron hydraulic disc hubs and calipers
  • Cast iron rotor with Geomet treatment for robust braking performance with added corrosion protection.  
  • NSK Japanese bearings
  • 5x114.3" stud pattern compatible with common trailer wheels
  • Hubs pre-fitted for faster installation
  • Custom axle fabrication available

Applications

  • Boat trailers
  • General-purpose trailers
  • Heavy-duty domestic or commercial builds
  • Replacement axles for existing hydraulic brake systems

Specifications

  • Axle rating: 1,750 kg
  • Axle type: Straight
  • Material: 50x50 mm box section steel, 5 mm wall thickness
  • Finish: Hot dip galvanised
  • Brake type: Hydraulic disc
  • Caliper material: Cast iron
  • Hub PCD: 5x114.3"
  • Hub style: Braked, cast disc
  • Axle length: Customisable  

Inclusions

  • 65110 Hub Set 1,750 kg 5x4.5" PCD Braked Hyd Cast Disc – Pair
  • 98030 Box section 50x50 mm 5 mm thickness 2 m length galv
  • 65200 Brake Calipers Cast Iron (pr) suits 1,500/1,750/2,000 kg Hub Set

FAQs

Q: What braking system is needed to operate the hydraulic disc brakes?

A: This set can be used with a hydraulic override coupling fitted to the trailer drawbar. You may also opt to install an electric-over-hydraulic kit if you prefer to have more braking options, and if you want the ability to control the brake from inside the towing vehicle.

Our HydroBrake EOH actuator and controller kits are excellent options. Please visit this page to learn more:

https://www.treadway.co.nz/shop/brakes/hydraulic-brake-kits.html

Q: Does the axle include brake pads?

A: Yes. The cast iron calipers are supplied complete with brake pads fitted. Replacement pads are available separately.

Q: What are the advantages of using box section beams for axles?

A: Box section beams (hollow tube axles) offer significant weight savings without compromising strength for most applications. Their lighter construction allows for increased payload capacity, easier handling during installation, and faster fabrication turnaround. They also allow for easy customisation, making them a flexible choice for trailer builders.  

Q: What is Geomet surface treatment?

A: Geomet is a water-based zinc–aluminium flake coating, typically used in truck and car brakes. It provides long-lasting protection against rust and corrosion, is highly heat-resistant so it won’t burn off under braking, and is environmentally friendly as it contains no hexavalent chrome or heavy metals. It works through physical barrier protection, galvanic action (where zinc corrodes before steel), and passivation—forming a stable layer that slows further oxidation. This makes it ideal for trailer brake rotors, delivering durability, consistent performance, and reduced maintenance.

Q: What are the benefits of cast iron hubs?

A: Cast iron hubs are a popular choice for trailer braking systems due to their combination of strength, thermal performance, and cost-effectiveness. Here are the key benefits:

High Strength and Load Capacity: Cast iron has excellent compressive strength, making it well-suited for supporting heavy loads without deforming. This makes it ideal for medium- to heavy-duty trailers.

Superior Heat Dissipation: During braking, friction generates heat. Cast iron naturally dissipates heat efficiently, helping to maintain braking performance and reduce the risk of brake fade over time.

Durability and Wear Resistance: Cast iron is highly resistant to wear and abrasion, which contributes to a longer service life—especially important in braking components that experience repeated stress.

Stable Performance Under Load: Its rigidity and dimensional stability under high temperatures ensure consistent braking performance, even during prolonged use. 

Specifications

Load Rating: 1750kg
PCD: 5x114.3
Brand: Treadway
Type/Finish: Galvanised

Questions?

In order to assist us in reducing spam, please type the characters you see:

You might also be interested in ...