Description

Overview

Technicians use the camshaft retainer 1.5in Rockwell to secure the brake camshaft on heavy trailer S-cam brake assemblies. It holds the cam in the correct axial position against the spider so the shoes apply evenly. This small retainer also helps limit end float, which supports consistent brake response under repeated applications.

Features

This camshaft retainer 1.5in Rockwell is a compact service part that suits many Rockwell style 1.5in S-cam brakes. It is easy to handle in tight brake assemblies, and fitters can change it during brake relines without disturbing other hardware.

• Designed for 1.5in Rockwell style camshaft journals on heavy trailers
• Supports stable S-cam location for even shoe contact
• Thin profile helps maintain existing end float settings
• Simple shape for quick inspection and replacement

Specifications and Materials

The camshaft retainer has a nominal inside diameter of 36.5mm and a thickness of 1.82mm to suit typical Rockwell 1.5in S-cam hardware. Part number: FB3105. Many fleets specify retainers of this type in hardened steel to cope with repeated brake loads. For an overview of S-cam brake components, refer to this technical overview on S-cam brakes

Compatibility and Fitment

This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required. 1718N118

Compliance and Safety

Correct camshaft retainers are important for brake performance, because loss of cam control can affect braking force at the drum. Therefore, confirm the shaft diameter, spider design and retainer style before installation. Inspect the S-cam, bushings and related hardware for wear and replace any damaged components at the same time. Finally, after fitting a new camshaft retainer 1.5in Rockwell, check end float and shoe movement so they stay within the brake manufacturer’s recommendations.

Trailer Applications

Workshops typically use this camshaft retainer 1.5in Rockwell on air-braked semi-trailers and converter dollies. It also suits other heavy trailers running Rockwell pattern S-cam brakes. In addition, it can suit some replacement camshaft kits that follow the same 1.5in Rockwell geometry, provided the spider and washer seats match. However, it should not be mixed with unrelated designs because mismatch can cause uneven shoe loading or premature wear. For best results, compare the existing retainer profile and key dimensions with this part before fitting.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

For fleet standardisation, always confirm cross-referenced parts against your current brake documentation or OEM recommendations.

Why Choose ICS Trailers

ICS Trailers focuses on supplying dependable foundation brake hardware to help fleets maintain braking performance with fewer unplanned stoppages. Our team also selects proven parts that suit common trailer brake systems used in Australian conditions. For workshop buyers, this means clear specifications, practical fitment guidance and parts that integrate with existing service practices. Browse Foundation Brakes at ICS Trailers in our Foundation Brakes category for more compatible hardware.