3290 Dunbier Roller Arm Bubble Plate, Suits Steel Roller Arms | Marine Trailer Part

🔧 Product Description

Genuine Dunbier Marine Products Supa-Rolla Bubble Plate for Steel Roller Arms - Part Number: 3290

A galvanised steel-arm bubble plate used at the pivot point of compatible Dunbier roller arms. The shaped plate allows the arms to articulate while spreading clamping load from the U-bolts.

⚙️ Key Features

• Purpose-shaped Supa-Rolla pivot plate

• Designed for steel roller arms

• Allows roller-arm articulation

• Provides U-bolt clamping and arm location

• Replacement for bent, cracked or worn original plates

📏 Specifications

• Arm material compatibility: Steel

• Plate-hole spacing and U-bolt centres must match the roller assembly

• Rubber bubble-plate strip is supplied separately where required

🔄 Cross Reference & Related Parts

• Suits steel Supa-Rolla and Rolla-Matic roller arms

• Complete arm assembly: Dunbier 3261

🚤 Compatibility & Application

• Install only with the matching arm profile and U-bolts

• Tighten evenly while preserving required arm movement

• Inspect the mating arm holes and rubber strip during replacement

🔌 Function

Locates the roller arms and permits controlled articulation so multiple wobble rollers share the hull load.

Common signs of wear, damage or replacement required:

• Plate is bent, cracked or deeply worn

• Bolt holes are elongated

• Arm movement is seized or excessively loose

• U-bolts no longer clamp evenly

• Rubber isolator is missing or deteriorated

📦 Condition

• Genuine Dunbier Marine Products part

• Brand new

• Supplied in original or equivalent packaging