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

🔧 Product Description

Genuine Mackay Marine Trailer Products Trojan Six-Stud Hub with 275 × 11mm Cast-Iron Rotor – Part Number: A1330

A heavy-duty galvanised Trojan hub with a 275 × 11mm cast-iron rotor and six-stud LandCruiser wheel pattern for compatible 2.2-tonne-class trailer brake systems.

⚙️ Key Features

• Galvanised or corrosion-resistant marine-trailer construction
• 6 stud × 139.7mm PCD wheel mounting pattern
• Trojan 2.2T bearing configuration
• Designed for compatible mechanical or hydraulic trailer braking where specified
• Serviceable bearings, seals, dust cap and wheel studs

📏 Specifications

• Wheel-size application: Heavy-duty LandCruiser-pattern wheels
• Stud pattern: 6 stud × 139.7mm PCD
• Bearing family: Trojan 2.2T
• Rotor/hub specification: 275 × 11mm cast-iron rotor
• Published application rating: 2.2-tonne-class application
• Brake application: Trojan mechanical or hydraulic caliper for 11mm rotor
• Wheel studs, bearing preload, seal and caliper alignment must follow the component specification

📋 Supplied Components

• 1 × Galvanised six-stud hub
• 1 × 275 × 11mm cast-iron rotor
• Bearings, two-part seal and dust cap as supplied

🔄 Cross Reference & Related Parts

• Dunbier cross reference: 1920
• Replacement cast rotor only: Mackay A1333 / Dunbier 1922
• Stainless hub/rotor: Mackay A1328 / Dunbier 1918

🚤 Compatibility & Application

• Confirm wheel stud PCD, centre bore, bearing journals, seal surface and axle-nut thread
• Brake rotor thickness and offset must match the caliper and mounting bracket
• The complete running-gear capacity is limited by the lowest-rated axle, bearings, hub, wheel, tyre, brakes and suspension
• Set bearing preload and wheel-nut torque correctly after installation
• Flush and inspect regularly after saltwater immersion

🔌 Function

Supports the trailer wheel on tapered roller bearings and, on disc-hub versions, provides the friction rotor used by the brake caliper.

⚠️ Common Signs of Failure

• Bearing noise, heat or excessive wheel play
• Rotor is scored, cracked, warped or below minimum thickness
• Stud holes or wheel studs are damaged
• Seal leakage or water-contaminated grease
• Hub or rotor has excessive runout

📦 Condition

• Genuine Mackay Marine Trailer Products part
• Brand new
• Supplied in original or equivalent packaging