A1421N Mackay 1631 Dunbier Axle Round Stub & Nut 200mm x 45mm Suits (Slimline) | Marine Trailer Part

🔧 Product Description

Genuine Mackay Marine Trailer Products Round Axle Stub and Nut for Slimline Bearings – Part Number: A1421N

A replacement round axle stub and nut for fabricating or repairing a compatible trailer axle. The machined bearing journals suit the Slimline bearing family and the raw/weld section fits the stated axle tube.

⚙️ Key Features

• Machined bearing and seal journals
• Supplied with axle nut
• Suitable for professional axle fabrication or repair
• Designed for 45mm round axle section
• Allows a damaged stub end to be replaced when the axle beam remains suitable

📏 Specifications

• Overall stub length: Approximately 200mm
• Parent axle diameter: 45mm round
• Bearing family: Slimline
• Published application rating: medium/heavy trailer application
• Includes matching axle nut as stated
• Weld preparation, insertion depth and alignment must match the axle manufacturer design

📋 Supplied Components

• 1 × Machined axle stub
• 1 × Matching slotted axle nut

🔄 Cross Reference & Related Parts

• Dunbier cross reference: 1631
• Use only hubs, bearings, seals, washers and axle nuts matching the machined journals

🚤 Compatibility & Application

• Installation must be performed by a competent axle fabricator or welder
• Stub alignment, camber and hub-face dimensions must be set accurately
• Do not weld across machined bearing or seal surfaces
• Inspect the full axle for heat damage, cracks and straightness before repair

🔌 Function

Provides the machined spindle on which the hub bearings rotate and the threaded end that retains the hub.

⚠️ Common Signs of Failure

• Bearing journals are scored, pitted or undersize
• Stub is bent or cracked
• Axle-nut threads are damaged
• Seal land is grooved or corroded
• Tyre wear or hub runout indicates misalignment

📦 Condition

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