A1350 Mackay 1688S Dunbier Bearing Set LM & Two-Part Seal Skin Pack | Marine Trailer Part

🔧 Product Description

Genuine Mackay Marine Trailer Products LM Marine Bearing Set with Two-Part Seal - Part Number: A1350

A skin-packed LM trailer wheel-bearing kit for standard 39mm round and 40mm square marine-trailer axle stubs.

⚙️ Key Features

• Complete wheel-bearing service set for one hub

• Tapered roller bearings support radial and thrust loads

• Marine two-part seal helps limit water entry and grease loss

• Suitable for scheduled maintenance or hub repair

• Allows the original hub to be retained when serviceable

📏 Specifications

• Bearing configuration: LM inner L68149/L68110 and outer L44649/L44610 family

• Seal type: Two-part LM marine grease seal

• Tapered bearing cups and cones must be replaced as matched sets

• Bearing numbers engraved on the removed components remain the primary fitment check

📋 Supplied Components

• 1 × Inner bearing cup and cone

• 1 × Outer bearing cup and cone

• 1 × Two-part marine seal

🔄 Cross Reference & Related Parts

• Dunbier cross reference: 1688S

• Replacement two-part LM seal pair: Mackay A1354 / Dunbier 1715S

🚤 Compatibility & Application

• Standard LM-bearing trailer hubs on compatible 39mm round and 40mm square axle stubs

• Clean and inspect the stub-axle journals, hub bores and seal surface before installation

• Pack bearings fully with compatible marine wheel-bearing grease

• Set axle-nut preload so the hub rotates freely without measurable looseness

• Fit a new split pin and dust cap after adjustment

🔌 Function

Supports smooth wheel rotation on the axle stub while the seal retains grease and limits water contamination.

Common signs of wear, damage or replacement required:

• Bearing is noisy, rough, overheated or discoloured

• Wheel has excessive end play

• Races are pitted, flaked or scored

• Grease is milky or contaminated with water

• Seal leaks or no longer grips the axle sealing surface

📦 Condition

• Genuine Mackay Marine Trailer Products part

• Brand new

• Supplied in original or equivalent packaging