Description

Overview

The inner bush spider end 22mm supports the brake camshaft at the spider end on heavy trailer axles and helps maintain consistent brake performance under load. This general purpose inner bush suits a range of foundation brake spiders where a 38mm shaft runs in a 48mm housing. Workshops use it as a service replacement when the original bush shows wear, fretting or excessive play. As a result, it helps restore correct cam alignment and reduces uneven brake shoe contact.

Features

This inner bush spider end suits general purpose brake applications and gives a straightforward service option for trailer fleets. It fits where space around the spider is limited and where technicians want a simple press-in sleeve that lasts. Key features include:

• General purpose inner bush for spider end support on trailer brake camshafts
• 38mm internal diameter and 48mm outside diameter for common heavy trailer brake spiders
• Short 22mm length to suit compact spider end housings and tight clearances
• Straightforward replacement process that fits standard workshop press tools

These features help reduce downtime, and they also support consistent brake response between axles.

Specifications and Materials

Part number: FB2201.
This inner bush has a nominal length of 22mm, an internal diameter of 38mm and an outside diameter of 48mm, which suits many camshaft and spider combinations in heavy trailer brakes. Manufacturers typically produce this style of bush from hardened or through-hardened steel so it can carry high radial loads at the spider end. For a general technical overview of plain bearing bush design and load capacity, refer to this manufacturer technical guide on bushings and plain bearings: manufacturer technical guide

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. BP2201, FL28.1236, TMP1510, TMP1670, WT2201

Compliance and Safety

Correct spider end support helps the brake camshaft track true, and that support can reduce the risk of binding or uneven brake shoe application. Always inspect the camshaft, spider bore and related hardware for wear before fitting a new inner bush. Additionally, follow the axle or brake manufacturer tightening and lubrication instructions where applicable. Technicians should use suitable eye and hand protection, and they should support the trailer securely with rated stands while working on the foundation brakes.

Trailer Applications

Workshops use this inner bush spider end 22mm on general purpose on-highway semi-trailers, dog trailers and other heavy combinations that rely on cam-actuated drum brakes. It suits brake spiders that accept a 38mm shaft in a 48mm bore with a shallow bush seat. Consequently, it works well in mixed fleets where different OEM brake packages share common bush sizes. In addition, it gives fleet managers a simple stocked item for regular brake overhauls.

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 practical, workshop-ready solutions for heavy trailer foundation brakes, so parts like this inner bush spider end 22mm are chosen to suit real fleet conditions. You get clear specifications, reliable cross-reference information and support from a specialist trailer parts supplier that understands Australian road loads and service patterns. Browse Foundation Brakes at ICS Trailers through this category page: Browse Foundation Brakes at ICS Trailers