Boat Trailer Roller Bracket Spindle Shaft for 12″ Roller | Zinc Finish 24mm (SKU: SPIND300Z)

The SPIND300Z is a heavy-duty spindle shaft with a robust 24mm diameter, designed for 12″ (300mm) keel rollers. Finished in corrosion-resistant zinc coating, it’s ideal for larger trailers and high-load marine environments.

Whether you’re hauling bigger boats or upgrading an older trailer system, this shaft offers a dependable, smooth-rolling solution. Zinc plating provides a layer of protection against rust, making it suitable for both freshwater and occasional saltwater exposure.

Best Applications:
– 12″ keel roller replacements
– Medium to large boat trailers
– Brackets compatible with 24mm shaft diameter
– Trailers exposed to moist or marine conditions

Features At A Glance:
– Strong 24mm diameter, suits 300mm rollers
– Zinc-coated for corrosion resistance
– Approx. 300g weight – sturdy and durable
– Easy-fit design for straightforward maintenance

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Frequently Asked Questions

• Q: Which roller size does this shaft support?
  A: It’s designed for 12″ (300mm) keel rollers with a 24mm internal bore.
• Q: What’s the difference between zinc and galvanised?
  A: Zinc coating offers good corrosion resistance and is typically smoother; galvanised is heavier-duty but can be rougher in texture.
• Q: Can it handle heavy boats?
  A: Yes, its 24mm thickness is built for higher loads compared to standard 16mm or 19mm shafts.
• Q: Will it rust in saltwater?
  A: Zinc resists rust well, but regular maintenance is still recommended in saltwater use.

Is This Spindle Right for You?

✔️ Great choice if:

• You’re using a 12″ roller on a medium or large boat trailer
• Your bracket fits 24mm shafts
• You want a smooth, rust-resistant zinc finish

❌ Might not suit you if:

• Your rollers are 4″, 6″, or 8″ with smaller bores
• You require galvanised finish specifically for extreme saltwater exposure

Quick Install Tips

1. Insert the 12″ roller onto the 24mm shaft.
2. Align the shaft with your bracket holes.
3. Secure each end using locking pins or bolts.
4. Ensure free movement before trailering your boat.

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