3136 Dunbier 3m Long Keel Roller System Pair | Marine Trailer Part

🔧 Product Description

Genuine Dunbier Marine Products Three-Metre Long Roller System Pair – Part Number: 3136

A pair of long galvanised roller-support assemblies for 3m-class trailer applications. Each assembly uses a 50mm square support tube with multiple wobble rollers to create a long adjustable hull-support track.

⚙️ Key Features

• Supplied as a matched pair
• Galvanised 50mm square support tubes
• Multiple wobble rollers distribute hull load
• Long support footprint assists loading and self-centring
• Adjustable mounting for compatible trailer frames

📏 Specifications

• Nominal system length: 3m class
• Support-tube size: 50mm square
• Supply quantity: Pair
• Roller type: Wobble rollers

📋 Supplied Components

• 2 × Long galvanised roller-support assemblies with wobble rollers

🔄 Cross Reference & Related Parts

• Single water-toy roller kit: Dunbier 3135
• Current catalogue description: Roller Assembly Kit – 3m Long

🚤 Compatibility & Application

• Compatible long-hull, kayak, water-toy or small-boat trailer applications
• Confirm frame length, cross-member spacing and hull-contact locations
• Both assemblies must be aligned parallel and set to equal load
• Do not allow rollers to contact fragile or unsupported hull panels

🔌 Function

Creates two long roller tracks that support and guide the hull during launch, retrieval and transport.

⚠️ Common Signs of Failure

• Support tube is bent or twisted
• Wobble rollers are seized or worn unevenly
• Left and right rails no longer align
• Mounting brackets move on the frame
• Hull shows concentrated pressure marks

📦 Condition

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