Description

This 1,750 kg gull wing axle is supplied pre-fitted with stainless steel hubs and calipers, offering a corrosion-resistant braking solution for trailers operating in coastal or marine environments. The axle beam is hot dip galvanised and is built from a durable 5-mm hollow box section to provide strength without the added weight of a solid axle. The braking system includes precision-machined stub axles, high-quality NSK bearings, and stainless steel rotors — all selected for durability, compatibility, and long-term performance in harsh conditions.

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 axle rating
  • Stainless steel hubs, rotors, and calipers
  • Hot dip galvanised axle beam
  • Stub axles machined for precise caliper fit
  • NSK Japanese tapered roller bearings provide smooth, reliable performance
  • Stainless steel oil seal holder suitable for saltwater environments
  • Rotor bolts directly to the hub
  • 5x114.3 mm (5x4.5") PCD – compatible with common trailer wheels

Applications

  • Boat trailers
  • Coastal and marine environments
  • Medium to heavy-duty trailers
  • Hydraulic disc brake systems

Specifications

  • Axle type: Gull wing
  • Axle rating: 1,750 kg
  • Axle length: 2 metres (can be customised)
  • Axle finish: Hot dip galvanised
  • Beam profile: 50x50 mm, 5 mm wall thickness, hollow box section
  • Hub type: Hydraulic disc, stainless steel
  • Rotor: Stainless steel
  • Bearings: NSK tapered roller
  • PCD: 5x114.3 mm (5x4.5")
  • Stub axle: Precision-machined
  • Oil seal: Stainless steel-backed marine-grade seal

Inclusions

  • 98036 – Box section 50x50 mm, 5 mm thickness, 2 m length, bare steel
  • 65300 – Brake Calipers Stainless Steel (pr) suits 1,500/1,750/2,000 kg Hub Set
  • 65111 – Hub Set 1,750 kg 5x4.5" PCD Braked Hyd Stainless Steel Disc – Pair

FAQs

Q: What are Japanese NSK bearings?

NSK is a leading Japanese manufacturer of high-performance bearings known for precision engineering and durability. The LM67048 and LM11949 tapered roller bearings included in this kit offer excellent load capacity, smooth operation, and long service life—making them a trusted choice for demanding trailer applications.

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: Does the kit include brake pads?

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

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

Specifications

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

Questions?

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