Boat Trailer Roller Bracket Spindle Shaft for 12″ Roller | Galvanised 22mm (SKU: SPIND300G)

The Boat Trailer Roller Bracket Spindle Shaft (SKU: SPIND300G) is a robust 22mm diameter shaft designed to suit 300mm (12″) keel rollers on boat trailers. Built for strength and longevity, it’s fully galvanised to withstand harsh marine environments, offering excellent corrosion resistance whether in salt or freshwater.

This spindle is a perfect replacement or upgrade part for trailer owners who need a reliable and easy-to-install shaft for their keel rollers. It supports the smooth rotation of the roller, helping to guide and cradle your boat securely during loading and unloading.

Common Uses:
– Replacing old or rusted roller spindles
– DIY trailer builds or restorations
– Suitable for boat trailer brackets that take 22mm shafts
– Compatible with most 12″ rollers available in the market

Key Features:
– Galvanised steel for rust resistance
– 22mm shaft diameter for 12″ rollers
– Suitable for heavy marine use
– Lightweight yet strong: approx. 500g

Scroll the table below for specifications →

Frequently Asked Questions

• Q: Will this fit all 12″ rollers?
  A: It fits most standard 12″ (300mm) rollers that require a 22mm shaft. Please check your roller’s inner bore before purchase.
• Q: Is it suitable for saltwater?
  A: Yes! The galvanised coating protects against corrosion even in saltwater conditions.
• Q: How do I know if it fits my bracket?
  A: Make sure your bracket accepts 22mm diameter spindles. Measure the hole if unsure.
• Q: Is the weight heavy enough for stability?
  A: Yes, at 500g it offers excellent stability while keeping the setup easy to handle.

Is This Right for You?

✔️ Recommended for:

• Boat owners needing a reliable replacement spindle for 12″ rollers
• DIY trailer builds requiring 22mm shafts
• Marine use where galvanised rust resistance is important

❌ Not suitable for:

• Rollers with different inner bore diameters (e.g. 19mm or 25mm)
• Non-standard brackets incompatible with 22mm shafts

Installation Guide

1. Remove the old roller and shaft from your bracket.
2. Slide the 12″ roller onto the SPIND300G spindle.
3. Insert the spindle into the bracket holes and secure with cotter pins or bolts as required.
4. Ensure free rotation of the roller without wobble.

Compare Our Spindle Shaft Range
Tap to expand the comparison chart. Swipe right to view all columns on mobile →