1621 Dunbier Axle Saddle Suits 39mm Round Axles Galvanised | Marine Trailer Part

🔧 Product Description

Dunbier Galvanised Spring Saddle for 39mm Round Axles – Part Number: 1621

A curved galvanised spring saddle designed for 39mm round trailer axles. The formed radius supports the axle tube on the leaf spring and locates the suspension centre bolt for correct alignment.

⚙️ Key Features

• Formed saddle for 39mm round axle tube
• Galvanised corrosion-resistant finish
• Spring-centre bolt location
• Compatible with LM-bearing round-axle families
• Individual replacement component

📏 Specifications

• Axle diameter: 39mm round
• Finish: Galvanised
• Bearing family commonly associated with this axle: LM

🔄 Cross Reference & Related Parts

• Dunbier: 1621
• Square-axle saddle: Dunbier 1620G
• 39mm LM stub axle: Dunbier 1630 / Mackay A1420N

🚤 Trailer Compatibility & Application

• Suitable for Dunbier and compatible 39mm round axles
• Must match the spring width, centre bolt and U-bolt arrangement
• Not for 40mm, 45mm or 50mm square beams

🔌 Function

Cradles the round axle on the spring and keeps the axle centred while the U-bolts clamp the suspension together.

⚠️ Common Signs of Failure

• Saddle no longer matches the axle radius
• Cracks or deep corrosion
• Centre hole elongation
• Axle rotates or shifts on the spring
• U-bolts bear unevenly

🛠️ Installation & Safety

• Use new U-bolts when rebuilding the suspension
• Seat the axle fully in the curved saddle
• Align the centre bolt before tightening
• Check axle orientation and toe alignment
• Re-torque after initial use

📦 Condition

• Brand new Dunbier Marine Products trailer component
• Supplied as one galvanised 39mm round-axle saddle
• Supplied in original or equivalent packaging