1920 Dunbier A1330 Mackay Trojan 6 Stud Hub and 275 x 11mm Cast Iron Rotor 2.2t | Marine Trailer Part

🔧 Product Description

Dunbier Trojan Six-Stud Hub with 275 × 11mm Cast-Iron Rotor - 2.2T - Part Number: 1920

A complete galvanised or stainless/cast rotor hub assembly for Trojan 65mm square hydraulic disc axles. The integrated wheel hub and brake rotor provides the wheel-stud pattern, tapered-bearing seats and braking surface required for the specified Dunbier axle family.

⚙️ Key Features

• Integrated wheel hub and disc-brake rotor

• Marine-trailer corrosion-resistant construction appropriate to the listed finish

• Supplied with matching bearing set where stated

• Wheel studs installed in the specified pattern

• Direct service replacement for the matching Dunbier/Mackay axle family

📏 Specifications

• Wheel pattern: Trojan/LandCruiser-style six stud

• Rotor: 275 × 11mm cast iron

• Bearings: Trojan LM44649/10 and LM48548/10 family

• Seal: Trojan two-part seal 1719

• Axle-family rating/application: 2.2-tonne Trojan axle family

🔄 Cross Reference & Related Parts

• Dunbier: 1920

• Mackay: A1330

• Cast-iron 11mm caliper: Dunbier 1926 / Mackay H3029

• Replacement rotor only: Dunbier 1922

🚤 Trailer Compatibility & Application

• Suits Trojan 65mm square hydraulic disc axles

• Confirm bearing family, spindle dimensions, caliper rotor width and wheel stud pattern

• Hub assemblies are supplied per wheel unless otherwise stated

🔌 Function

Carries the trailer wheel on the axle bearings and provides the rotating friction disc for the brake caliper.

Common signs of wear or replacement:

• Rotor is below minimum thickness, deeply scored or heat cracked

• Wheel studs are loose, stretched or damaged

• Bearing races are pitted or spin in the hub

• Sealing surface is corroded

• Hub runs hot, noisy or develops excessive end float

🛠️ Installation & Safety

• Pack and install bearings correctly

• Use the matching seal and a new axle split pin

• Adjust bearing preload before fitting the dust cap or protector

• Torque wheel nuts in stages to the wheel specification

• Bed new pads and rotors according to the brake manufacturer's procedure

📦 Condition

• Genuine Dunbier Marine Products trailer component

• Brand new

• Supplied as one complete hub-and-rotor assembly with bearings and seal where specified

• Supplied in original or equivalent packaging