Description

Overview

The bronze bush stepped camshaft 50mm fits heavy trailer drum brake camshafts and supports smooth, consistent cam rotation. It locates on the stepped camshaft journal and sits inside the axle bracket or spider, taking up radial load during braking. Additionally, correct bush fit and lubrication help reduce cam movement, brake noise and uneven lining wear over time.

Features

• Maintains a controlled running clearance between the stepped camshaft journal and the axle bracket bore for stable braking.
• Supports the camshaft under high brake torque so the S cam can apply the shoes evenly on every stop.
• Uses a robust bronze bearing surface that handles repeated articulation and helps resist galling when serviced correctly.
• Works with common stepped camshaft layouts on multi axle trailer drum brake systems, simplifying bush replacement.

Specifications and Materials

This bush suits a stepped camshaft layout where the cam journal runs inside a bronze bearing surface and presses into a 47mm housing bore. Length is 50mm with a 43mm inner diameter and 47mm outer diameter, which are typical dimensions for heavy trailer camshaft bushes. Part number: FB2220.
For more background on camshaft bush function in heavy vehicle foundation brakes, refer to this S cam drum brake maintenance manual for trailers

Compatibility and Fitment

This bronze bush stepped camshaft 50mm suits heavy trailer drum brake axles that carry a stepped camshaft supported in the spider or hanger bracket. 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. 21209990, A1812, WT2215

Compliance and Safety

Always follow the trailer and axle manufacturer’s service procedures when replacing camshaft bushes to maintain braking performance. In addition, use suitable press tools and support the bracket or spider correctly to avoid cracking cast components. Technicians should wear eye protection and gloves, and they should clean brake dust with approved methods rather than compressed air. Finally, check camshaft end float and bearing play after installation so the brake runs within the specified limits.

Trailer Applications

This bronze bush stepped camshaft 50mm typically appears on heavy haul semi trailers, curtainsiders, tippers and other on highway equipment using drum brakes. Furthermore, it suits applications where consistent brake response and long lining life matter more than small cost differences between bush options. After installation, operators can expect more predictable brake adjustment and reduced cam rattle when the system is maintained correctly.

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 sources camshaft bushes that match proven trailer brake dimensions so fitment stays straightforward in the workshop. Moreover, the team focuses on heavy vehicle parts, which helps them stock compatible components for common drum brake axles. When you choose this bush, you can match it with other foundation brake parts from the same supplier and keep your trailer servicing consistent. Browse Foundation Brakes at ICS Trailers via Foundation Brakes parts