Description

Overview

Outer Bush Rockwell 1 5/8 Inch Brake Camshaft supports the brake camshaft where it passes through the brake spider. It helps keep the camshaft running concentrically under braking load, so it supports reliable brake response on heavy trailers. It also works with the matching inner bush to help control end float and wear.

Features

This outer bush suits Rockwell brake camshafts with a 1 5/8 inch journal and a housing bore of about 51mm. It locates in the spider and supports the camshaft over its full 33mm length, which helps limit vibration and side loading. The steel-cased construction also helps the bush hold shape during press fit.

Specifications and Materials

Part number: FB3119.
The outer bush measures 33mm long with a 48mm inside diameter and a 51mm outside diameter to suit Rockwell 1 5/8 inch camshaft housings. These dimensions help set a controlled running clearance when paired with the correct camshaft journal. For general background on how bushings support rotating shafts, refer to this plain bearing overview from an independent engineering reference source

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. 1225A833, 28-1240, BP3119, E-2407, WT3119

Compliance and Safety

Correct camshaft support helps maintain consistent brake shoe travel and supports even braking across the axle group. Follow the axle or brake manufacturer’s service instructions when you press bushes into the spider. Inspect camshaft and bush surfaces for scoring or corrosion and replace worn components as required. Then adjust and test the brake system before you return the vehicle to service.

Trailer Applications

This outer bush suits Rockwell style foundation brake layouts that use a 1 5/8 inch camshaft on heavy trailers and semi-trailers. Workshops often fit it in the brake spider or hanger bracket to support the camshaft through the bracket wall. During overhauls, technicians often replace it with the matching inner bush, seals and camshaft hardware. Correctly sized bushes can also help extend service life by managing side load and contamination.

Cross-reference and Suitability

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

Compare the stated dimensions and camshaft size with the original component before installation. Check your workshop documentation if you feel unsure.

Why Choose ICS Trailers

ICS Trailers focuses on heavy vehicle and trailer parts, so you can match brake hardware to real fleet requirements. Our listings emphasise clear dimensions and compatibility details to help reduce workshop downtime and repeat jobs. For more components like this, browse Foundation Brakes at ICS Trailers