A1331 Mackay 1921 Dunbier Trojan Stainless Rotor Only 275 x 11mm 2.2T | Marine Trailer Part

🔧 Product Description

Genuine Mackay Marine Trailer Products Trojan Replacement Rotor 275 × 11mm - Stainless Steel - Part Number: A1331

A replacement 275 × 11mm stainless steel brake rotor for compatible Trojan 2.2-tonne six-stud hub assemblies. It replaces the worn friction disc while retaining the serviceable hub and wheel studs.

⚙️ Key Features

• Stainless Steel braking surface
• 275mm outside diameter
• 11mm nominal rotor thickness
• Designed for Trojan 2.2T hub and caliper system
• Rotor-only replacement component

📏 Specifications

• Rotor diameter: 275mm
• Nominal thickness: 11mm
• Material: Stainless Steel
• Hub, bearings, studs and caliper are not included
• Minimum service thickness and runout must follow the Trojan brake specification

🔄 Cross Reference & Related Parts

• Dunbier cross reference: 1921
• Complete stainless assembly: Mackay A1328 / Dunbier 1918
• Complete cast-iron assembly: Mackay A1330 / Dunbier 1920

🚤 Compatibility & Application

• Trojan six-stud 2.2T hub using a 275 × 11mm rotor
• Caliper and bracket must be designed for the 11mm rotor
• Clean the hub mounting face and check lateral runout after installation
• Use new retaining hardware where specified

🔌 Function

Provides the friction surface clamped by the trailer brake caliper to slow the wheel.

⚠️ Common Signs of Failure

• Rotor is scored, cracked, warped or heat checked
• Thickness is below the service limit
• Excessive lateral runout causes brake pulsation
• Severe corrosion reduces the braking surface
• Mounting holes or centre register are damaged

📦 Condition

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