R2271K Mackay 3100 Dunbier ROLLA-MATIC Double 40mm Square Tube Leg | Marine Trailer Part

🔧 Product Description

Mackay Galvanised Double Wobble-Roller Bracket Kit with 40mm Leg – Part Number: R2271K

A galvanised Mackay trailer support component used to mount, position or articulate rollers, skids, guide rails or hull-support arms. Its geometry is matched to the stated upright, rib, arm or roller system.

⚙️ Key Features

• Galvanised steel construction
• Purpose-designed Mackay trailer geometry
• Adjustable or pivoting support where the design permits
• Replaceable independently of serviceable rollers and rails
• Suitable for marine trailer exposure

📏 Specifications

• Configuration: Double roller bracket
• Support leg: 40mm square
• Grey wobble rollers included in the complete kit

🔄 Cross Reference & Related Parts

• Mackay: R2271K
• Dunbier cross-reference: 3100

🚤 Trailer Compatibility & Application

• double Rolla-Matic side-support systems
• Mounting-hole pattern, tube size and left/right orientation must match the installed trailer
• Hull-contact components must be adjusted to avoid point loading, chines and fittings

🔌 Function

• Supports and positions the associated roller, rail, skid or guide while transferring hull load into the trailer frame.

⚠️ Common Signs of Failure

• Bracket or arm is bent, cracked or twisted
• Mounting holes are elongated
• Pivot has seized or developed excessive play
• Galvanising has failed with deep corrosion
• Hull support moves or no longer shares load evenly

🛠️ Installation & Safety

• Support the boat and unload the assembly before removal
• Use the specified bolts, U-bolts, washers and locking nuts
• Set paired supports symmetrically
• Preserve intended pivot movement without leaving fasteners loose
• Recheck alignment and torque after the first retrieval and road trip

📦 Condition

• Brand new Mackay trailer component
• Supplied as one complete double roller bracket kit
• Supplied in original or equivalent packaging