The A45S81G Galvanised Trailer Axle is a heavy-duty 45mm × 45mm solid square steel axle with a nominal length of 81 inches. It is designed for SL / Ford (Slimline/B-Type) wheel bearings and has a typical 1400kg axle rating, making it suitable for heavier boat, marine and utility trailer applications.
Boat Trailer Axles
Galvanised 45mm Square Axle 81" (2055mm) 1400kg Rating
SKU: SR-A45S81G
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Key benefits
Key benefits
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Key Benefits
- 81" / approximately 2057mm tip-to-tip
- Heavy-duty 45mm × 45mm solid steel
- 1400kg rated axle
- Galvanised for improved corrosion resistance
- Excellent for boat and marine trailers
- Designed for SL / Ford bearings
- Solid straight-beam construction
- Suitable for compatible braked and unbraked hub arrangements
- Higher capacity than 40mm-square LM-bearing axles
- Ideal for trailer repairs, rebuilds and axle replacement
Dimensions
- Overall tip-to-tip: 2057mm nominal
- Imperial nominal length: 81"
- Axle section: 45mm × 45mm square
- Hub face-to-hub face: approximately 1960mm
- Shaft length: 120mm on the TRU equivalent
- Inner bearing ID: approximately 35mm
- Outer bearing ID: approximately 22mm
- Rated capacity: 1400kg
SL / Ford Bearing Compatibility
- Inner / Large Bearing
- Bearing: L68149
- ID: approximately 34.9–35mm
- Outer / Small Bearing
- Bearing: LM12749 / L12749
- ID: approximately 22mm
Suitable Applications
- Boat trailers
- Fibreglass boat trailers
- Aluminium boat trailers
- Jet ski trailers
- Single-axle trailers
- Tandem-axle trailers
- Utility trailers
- LM/Holden-bearing hubs
- Compatible braked and unbraked hub installations
Important Fitment Information
- Before ordering, confirm the trailer requires an 81" / approximately 2057mm tip-to-tip axle, 45mm × 45mm square beam and SL/Ford bearings. Also check hub-face width, spring/U-bolt arrangement, wheel offset, brake configuration and required axle capacity.
Signs Your Trailer Axle Needs Replacing
- Replacement or professional inspection is recommended if the axle shows severe corrosion, bending, damaged bearing journals, worn spindle threads, abnormal tyre wear, wheel misalignment or repeated bearing failures.
- When replacing the axle, inspect the bearings, seals, hubs, springs, U-bolts, spring plates and braking components at the same time.
Shipping
Ships Australia-wide