R2278SG Mackay 210mm Connecting Arm Galvanised | Marine Trailer Part

🔧 Product Description

Mackay Galvanised Connecting Arm 210mm - Part Number: R2278SG

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

• Arm length: 210mm

• Configuration: Connecting/equalising arm

• Finish: Galvanised

🔄 Cross Reference & Related Parts

• Mackay: R2278SG

• Dual arm: R2276G

• Quad arm: R2277G

🚤 Trailer Compatibility & Application

• multi-roller assemblies requiring load-sharing articulation

• 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 wear or replacement:

• 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 galvanised connecting arm

• Supplied in original or equivalent packaging