Description

Overview

Fleet operators use camshaft inner bush 38mm shaft to support the camshaft in heavy vehicle foundation brake systems. The bush sits between the 38mm shaft and the 48mm housing so the cam turns smoothly during brake apply and release. This support helps reduce cam wobble and can help the brake shoes move evenly. As a result, trailer brakes stay more consistent under repeated use.

Features

This camshaft inner bush 38mm shaft suits a 38mm cam running in a 48mm housing, which matches many common hanger and spider designs on trailers. The 32mm length gives solid support without taking up excess stack space in the brake assembly. Workshops can press the bush into position with standard tools, then slide the camshaft through and check for smooth rotation. The simple one-piece construction also makes inspection and replacement straightforward during routine brake overhauls.

Specifications and Materials

Key dimensions for this inner bush are 38mm inside diameter, 48mm outside diameter and 32mm overall length, so it fits cam housings that use a 38mm shaft with a 48mm bore. Part number: FB3150. Available data from suppliers confirms the size and application, although it does not publish an exact material grade for this component. For a clear explanation of how plain bushes support a rotating shaft, review this plain bearing technical guide from an established manufacturer of plain bearings

Compatibility and Fitment

This camshaft inner bush 38mm shaft fits brake cam and support housings that carry a 38mm shaft in a 48mm bore with space for a 32mm long bush. Measure the existing camshaft, the housing bore and the old bush length, then compare them with these dimensions. Next, check that the hanger or spider accepts a press-fit bush of this size without distortion so the new inner bush seats correctly and keeps the camshaft running true.

Compliance and Safety

Heavy vehicle brake regulations require well maintained foundation brake hardware, so treat loose or worn cam bushes as a priority repair. Park the trailer on level ground, chock the wheels and isolate air supply before starting work on the brake system. Use suitable pullers and press tools instead of impact methods so you avoid damaging the hanger, spider or new bush. After installation, cycle the brakes several times and check that the cam moves freely without binding or excess end float.

Trailer Applications

You will typically find this camshaft inner bush 38mm shaft in S cam drum brake systems on semi-trailers, dog trailers and dollies that operate in linehaul and general freight work. Workshops often replace the inner bush at the same time as outer bushes, seals and camshaft washers to restore full support to the cam assembly. Regular inspection of these bushes also helps maintain even brake response across multiple axles, which supports safer and more predictable trailer handling under load.

Cross-reference and Suitability

Current data does not publish a formal cross-reference list for this inner bush, so rely on physical dimensions and application checks when selecting a replacement. Measure the removed bush and compare the inside diameter, outside diameter and length with this listing. Then confirm that the 38mm shaft, 48mm housing bore and 32mm length match your brake hardware before you complete the installation.

Why Choose ICS Trailers

ICS Trailers focuses on carrying practical foundation brake parts that suit real Australian trailer fleets, so you can match inner bushes and related components with confidence. The team selects products with clear dimensional data, which makes it easier to confirm fitment in the workshop. You can also source complementary hardware such as camshaft seals, washers and external bushes from the same range. Browse more Foundation Brakes parts at ICS Trailers in the Foundation Brakes category range.