Description

This 1,750 kg dropper axle is designed for trailers that need hydraulic disc braking and a lowered axle position for stability and easier loading. Built with a strong box section beam and cast iron hydraulic disc brake components already pre-fitted, it offers dependable performance and straightforward installation.

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
  • Geomet-coated cast-iron rotor
  • Cast-iron calipers machined for a precise fit
  • Box-section beam offers excellent torsional strength without adding too much weight
  • Pre-fitted hub set for simpler installation
  • Equipped with high-quality Japanese NSK bearings for durability
  • Oil seal with stainless-steel back plate for longer service life
  • Axle fabricated to match your supplied dimensions

Applications

  • Low-profile trailers
  • Medium to heavy-duty builds requiring hydraulic braking
  • Replacement axles for dropper setups
  • Custom trailers with height constraint
  • Trailers used in marine applications

Specifications

  • Axle rating: 1,750 kg
  • Axle type: Dropper
  • Beam: 50x50 mm box section, 5 mm wall thickness
  • Brake type: Hydraulic disc
  • Caliper material: Cast iron
  • Rotor material: Cast iron, Geomet-coated
  • Hub PCD: 5x114.3"
  • Bearings: Japanese NSK tapered roller
  • Oil seal: Stainless steel back plate
  • Axle length: Customisable

Inclusions

  • 65110 Hub Set 1750kg 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 1500/1750/2000kg Hub Set
  • 17174 Axle Dropper Plate 100mm suit 39mm Stub 50x50 box

FAQs

Q: What are Japanese NSK bearings?

A: NSK is a world-leading Japanese bearing manufacturer. Their tapered roller bearings are highly regarded for strength, smooth performance, and long service life, offering a clear advantage over generic alternatives.

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

Type/Finish: Pre-Galv
Load Rating: 1750kg

Questions?

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