3122 Dunbier Heavy-Duty Slide Bracket Suits 50 x 50mm | Marine Trailer Part

🔧 Product Description

Genuine Dunbier Marine Products Heavy-Duty Slide Bracket for 50 × 50mm Cross-Member - Part Number: 3122

A heavy-duty galvanised trailer slide bracket designed to clamp around a 50 × 50mm square cross-member and hold a 40mm square tube support leg. The adjustable clamping arrangement allows roller, pad or hull-support height and position to be set without welding.

⚙️ Key Features

• Heavy-duty galvanised steel construction

• Designed for a 50 × 50mm square trailer cross-member

• Accepts a 40mm square tube support leg

• Mounting arrangement: two-bolt heavy-duty slide clamp

• Allows support assemblies to be repositioned during trailer setup

📏 Specifications

• Cross-member size: 50 × 50mm square

• Support-leg size: 40mm square tube

• Bracket style: two-bolt heavy-duty slide clamp

• Supply format: complete bracket with galvanised bolts and nuts

• Fastener grade, bolt length and hole centres must match the supplied bracket

🔄 Cross Reference & Related Parts

• Related heavy-duty brackets: Dunbier 3123, 3124 and 3125

🚤 Compatibility & Application

• Compatible Dunbier roller, pad and support assemblies using the stated leg size

• Measure the cross-member outside dimensions before ordering

• The bracket must clamp squarely without crushing or distorting the trailer tube

• Set both sides evenly so the boat hull is supported symmetrically

• Retighten mounting hardware after the first launch/retrieval cycle and during scheduled servicing

🔌 Function

Clamps an adjustable roller, pad or support leg to the trailer cross-member and allows the support height, spacing and hull contact position to be tuned.

Common signs of wear, damage or replacement required:

• Bracket is bent, cracked or no longer clamps squarely

• Locking bolt or threads are stripped

• Support leg slips under load

• Mounting holes or slots are elongated

• Galvanising is lost and structural corrosion develops

📦 Condition

• Genuine Dunbier Marine Products part

• Brand new

• Supplied in original or equivalent packaging