Description

Overview

The camshaft seal rockwell 38mm supports the S camshaft on Rockwell style foundation brakes and helps keep grease where it belongs around the cam journal. It sits between the cam tube and the brake spider, so it forms a barrier against dust, water and road grit. As a result, the seal helps protect the outer bush and cam tube from premature wear. This camshaft seal rockwell 38mm size suits brake hardware that uses a 38mm camshaft with a 52mm housing bore, which is common on heavy trailer axles.

Features

This camshaft seal rockwell 38mm design focuses on reliable sealing performance for busy fleets. The profile suits 38mm S cam shafts and typical Rockwell brake spiders, so fitment stays straightforward when sizes and cross references match. The seal also supports grease retention at the outer end of the camshaft, which helps the bush stay lubricated for longer service intervals. The low profile thickness of 6.3mm helps maintain the correct hardware stack without excessive end float, and it suits high mileage trailers that see frequent brake applications and harsh road conditions.

Specifications and Materials

Part number: FB3141.
This camshaft seal suits camshaft applications that use a 38mm shaft and a 52mm bore in the brake spider or support plate. The nominal thickness of 6.3mm helps maintain the correct relationship between the camshaft, washer and circlip so the S cam runs true in service. The seal is supplied in a heavy duty construction suitable for grease lubricated cam bush assemblies on drum brake axles. For a broader explanation of how camshaft seals fit into S cam drum brake hardware, you can refer to this drum brake axle service manual which outlines typical S cam brake layouts and components

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. 408103, 820064, A1205V1556, BP3123, E-654, WT3123
The seal normally installs at the outer end of the S camshaft where it meets the support bracket or spider. Correct seating of the seal and fresh grease during assembly are essential, so confirm shaft diameter, housing bore and cross references against the original hardware before installation.

Compliance and Safety

Sound camshaft sealing supports brake performance and helps fleets meet roadworthy and defect standards, because it limits grease escape into the drum area. When the seal wears or hardens, grease can migrate toward the brake linings and reduce friction, which can increase stopping distance. Inspect camshaft seals during brake relines or when drivers report grease leaks near the cam bracket. Always follow the axle or brake manufacturer’s torque settings, and chock wheels securely before working on any foundation brake components.

Trailer Applications

This camshaft seal rockwell 38mm suits heavy trailer axles that use Rockwell style S cam drum brakes with a 38mm camshaft and matching 52mm housing bore. Typical applications include highway semi trailers, B double combinations and general freight equipment where Meritor or Rockwell pattern brakes are fitted. It is also suitable for many retrofit and repair jobs where the listed cross references match the original part, and workshops often keep it in stock as a service item for routine foundation brake overhauls on compatible axles.

Cross-reference and Suitability

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

These cross references come from established heavy vehicle brake catalogues and help confirm interchangeability between different supplier part numbering systems. Even so, compare key dimensions and the hardware layout on the vehicle before final fitment.

Why Choose ICS Trailers

ICS Trailers focuses on stocking proven foundation brake hardware for Australian heavy trailers, so you can match seals, bushes and camshafts with confidence. Our team understands how S cam components work together, so we prioritise parts that support safe braking and reliable service life. The detailed cross-reference information on each listing also helps reduce ordering mistakes and workshop downtime. Browse Foundation Brakes at ICS Trailers through our Foundation Brakes category for more camshaft seals and related hardware for your fleet.