1061 Dunbier H3354 Mackay 50mm Chrome Trailer Tow Ball | Marine Trailer Part

🔧 Product Description

Dunbier Chrome Trailer Tow Ball 50mm – 3500kg – Part Number: 1061

A chrome-plated 50mm tow ball for standard and heavy-duty Dunbier trailer couplings. Mackay H3354 is catalogued with a 3500kg capacity, subject to the permanent marking, towbar rating and correct installation.

⚙️ Key Features

• Standard Australian 50mm ball diameter
• Chrome-plated wear surface
• Heavy-duty catalogue rating
• Suitable for fixed and override 50mm couplings
• Includes mounting nut and washer as supplied

📏 Specifications

• Ball diameter: 50mm
• Mackay catalogue rating: 3500kg
• Finish: Chrome plated
• Shank size must match the towbar tongue

🔄 Cross Reference & Related Parts

• Dunbier: 1061
• Mackay: H3354
• Compatible coupling families: Dunbier 1000, 1010, 1030, 1032 and 1041 subject to rating
• Comparable replacement: ADR/AS-compliant 50mm tow ball with matching shank and marked capacity

🚤 Trailer Compatibility & Application

• Suitable for vehicle towbars with a compatible rated tongue
• The ball rating must be equal to or greater than the trailer ATM
• Not compatible with 70mm heavy-trailer couplings

🔌 Function

Forms the spherical pivot captured by the trailer coupling, allowing steering and vertical articulation.

⚠️ Common Signs of Failure

• Flat spots, grooves or undersize ball diameter
• Loose mounting nut
• Damaged thread or stretched shank
• Severe corrosion below damaged chrome
• Unclear or missing rating mark

🛠️ Installation & Safety

• Install through a correctly sized rated towbar tongue
• Torque the nut to the ball manufacturer's specification
• Use the supplied washer and approved locking method
• Check coupling fit after installation
• Inspect periodically and replace if the ball surface is materially worn

📦 Condition

• Brand new Dunbier Marine Products trailer component
• Supplied as one 50mm chrome tow ball with mounting hardware
• Supplied in original or equivalent packaging