# 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 wear or replacement:

  

• 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

## Details

- **Price:** 4.5 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4.50 AUD | In stock |

## Images

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

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/1621-dunbier-axle-saddle-suits-39mm-round-axles-galvanized)
> Updated: 2026-08-03