Description

Overview

This camshaft washer general purpose component helps locate and support the brake camshaft in heavy vehicle foundation brakes. It sits between key hardware faces on the S cam stack, so it helps keep the camshaft running true under repeated brake applications. As a result, it supports consistent brake timing on busy freight and fleet trailers.

Features

This washer is configured for camshaft applications that use a 40mm shaft and matching hardware stack. The 3.2mm thickness lets you take up end float while still maintaining correct running clearance in the brake assembly. The 62mm outer diameter also spreads the load across a broader support face to help reduce localised wear. The forged construction suits demanding trailer service where vibration, contamination and frequent brake cycles are expected.

Specifications and Materials

This camshaft washer is specified with a nominal thickness of 3.2mm, an inside diameter of 40mm and an outside diameter of 62mm, matching common S cam hardware dimensions for heavy trailers. It is supplied as a general purpose component suitable for use in camshaft washer stacks on drum brake axles that use a 40mm camshaft. Part number: FB3123. For general engineering background on flat washer functions and load distribution, refer to this engineering fastener overview

Compatibility and Fitment

This washer suits camshaft hardware stacks where a 3.2mm thick washer is specified alongside a 40mm camshaft and matching bushes, seals and circlips. Install it between clean, flat mating surfaces and check end float after assembly so the camshaft rotates freely without excessive movement. 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. 1229M559, 29-1311, 403105, BP3104, E-719, FL29.1311, M10HS117, S-20822, WT3104

Compliance and Safety

Correct camshaft hardware is critical for safe, predictable brake performance. Confirm shaft size and stack layout against the axle or brake manufacturer information before selecting replacement parts. Inspect the existing camshaft, bushes and seals for wear or scoring and replace any damaged components at the same time. During installation, chock wheels securely, isolate the vehicle, and follow workshop procedures for working around heavy brake springs and rotating parts.

Trailer Applications

This camshaft washer is typically used on heavy trailers and semi trailers fitted with S cam drum brakes that run a 40mm camshaft. It suits general freight, tankers, tippers and other highway equipment where standard camshaft washer stacks are used to control end float. It is appropriate for both repair work on individual axles and larger fleet maintenance programs where consistent hardware is preferred across multiple vehicles.

Cross-reference and Suitability

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

Why Choose ICS Trailers

ICS Trailers focuses on heavy vehicle trailer parts, so you get components that match real fleet requirements rather than generic hardware. Every listing is backed by clear dimensions and application notes to simplify selection for workshop staff. Our range of camshaft, foundation brake and axle parts also lets you source compatible hardware from one supplier. Browse foundation brakes at ICS Trailers