6″ (152 mm) Blue Nylon Self‑Centring Centre Roller – 17 mm Bore (P/N 91330)

Overview
The 6″ (~152 mm) Blue Nylon Self‑Centring Centre Roller (Part No. 91330) is precision-machined from tough, UV‑stable HDPE nylon to handle aluminium boat trailers with ease. Its concave, grooved profile auto-aligns the boat hull when loading, simplifying launch and retrieval. Designed for compatibility with standard 17 mm bore spindles. 

Key Features

• 152 mm roller width – optimised for wide keel support

• 17 mm bore – fits standard trailer spindle systems

• Blue HDPE nylon – non-marking, wear-resistant, and UV-resistant

• Self-centring concave shape – grooves guide hull into centre

• Made for alloy boat trailers – built for tough marine or saltwater conditions 

Applications

• Ideal for bow or intermediate rollers on aluminium boat trailers

• Best installed near the bow_stop to auto-centre before winch loading

• Compatible with flat brackets, stems, and standard spindles sizing

Specifications

Benefits

• Durable nylon surface resists abrasion and heavy usage

• Concave profile and grooves improve launch alignment

• Ships fast from QLD and includes a 12-month warranty