Description
Overview
The Bracket and Roller 100mm assembly provides a ready-to-fit keel support for small boat trailers. It combines a black rubber “cotton reel” roller, a galvanised bracket and the through-pin into one unit, so installers can replace worn parts quickly and launch or retrieve more smoothly. RWB4641 identifies the 100 mm roller length, which suits compact trailer frames and light craft.
Features
- Complete assembly: 100 mm rubber roller supplied with bracket and pin
- Durable bracket for typical marine use on small trailers
- Hourglass roller profile helps centre the keel during retrieval
- Fast retrofit: remove the old unit and bolt the new assembly in place
Specifications and Materials
The table below summarises the key details confirmed for this assembly.
| Parameter | Value |
|---|---|
| Product name | Bracket and Roller 100mm (cotton reel) |
| Part number | RWB4641 |
| Roller length | 100 mm (approx. 4″) |
| Roller material | Black rubber |
| Supplied hardware | Bracket and cross pin |
For general technical guidance on boat trailer keel rollers and brackets, see the manufacturer overview from Maypole, which explains materials and bracket construction used for marine rollers Maypole keel rollers and brackets
Compatibility and Fitment
This Bracket and Roller 100mm assembly suits trailers that accept a cotton-reel style keel roller. Because trailers vary, confirm your mounting hole spacing and spindle size before purchase. Then install the assembly square to the keel line and torque all fasteners securely. After installation, rotate the roller by hand and check that it runs freely without binding.
Compliance and Safety
Use this product for boat trailer support only. It is not designed for lifting or load-bearing outside normal trailer duty. Therefore, inspect the roller surface and bracket at regular service intervals, especially after launch and recovery in abrasive sand or silt. Replace components that show cracking, flat spots, or bent hardware.
Marine Applications
Owners and service shops choose the Bracket and Roller 100mm to restore smooth keel support on tinnies, inflatables and small fibreglass boats. Because the hourglass profile helps centre the keel, retrieval becomes easier on steep ramps and in crosswinds. In addition, the complete assembly simplifies onboard spares stocking for field repairs.
Why Choose Argomarine
Argomarine supplies vetted trailer parts that match Australian conditions. We stock RWB4641 so you can refresh worn rollers quickly, keep retrieval reliable and protect hull finishes. Moreover, our concise specifications help you select the right assembly the first time, which saves ramp time and reduces workshop revisits.
For more trailer rollers, mounts and related hardware, browse our Boat & Trailer Accessories category for marine trailer parts.
