Description

Overview

The camshaft o ring 1.5in freighter rn paymaster helps seal the camshaft bush area on heavy trailer foundation brakes. It sits between the camshaft and the matching bush so grease stays in and road grime stays out. As a result, it supports smoother cam rotation and more consistent brake response over time. This seal also helps protect nearby hardware from premature wear.

Features

This camshaft suits 1.5in Freighter RN Paymaster camshafts used on common trailer brake setups.

• Simple ring profile for straightforward installation during camshaft or bush replacement
• 38mm internal diameter and 44mm outer diameter to suit standard 1.5in camshaft hardware stacks
• Helps maintain a clean grease film around the bush faces to support smoother cam movement
• Supports more predictable brake adjustment intervals between services

Specifications and Materials

This camshaft o ring 1.5in freighter rn paymaster uses a nominal 38mm internal diameter with a 44mm outer diameter, matching typical Freighter RN Paymaster 1.5in camshaft bushes. The cross section suits standard camshaft support hardware where the seal sits between the bush and the support bracket. Although the exact elastomer compound is not published, heavy trailer O rings in this position are typically specified for oil and grease exposure. For a general explanation of how O rings provide static sealing, see this O-ring overview Part number: FB3113.

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. Freighter RN Paymaster 1.5in camshaft, York 2950 axle 335mm x 210mm brake, FB2101, FB2107

Compliance and Safety

Correct camshaft sealing helps brakes stay within design performance between service intervals. Always inspect the camshaft o ring 1.5in freighter rn paymaster during any camshaft or bush change and replace it if there is flattening, cracking or hardening. After assembly, confirm the camshaft runs freely and that no seal material pinches in the bush faces. Always chock wheels, isolate air supplies and follow workshop procedures before working on foundation brakes.

Trailer Applications

This camshaft o ring 1.5in freighter rn paymaster typically appears on Freighter RN Paymaster camshaft layouts that use a 1.5in cam and matching bushes. It is also used on camshaft and bush hardware that appears in York 2950 axle 335mm x 210mm brake assemblies where the same camshaft layout is fitted. The part suits fleet workshops that want a direct fit seal for routine brake overhauls. Many workshops keep the camshaft o ring 1.5in freighter rn paymaster on hand as a stocked trailer brake spare.

Cross-reference and Suitability

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

These references help confirm fitment where camshaft bushes or axle families are identified by application rather than by the individual seal.

Why Choose ICS Trailers

ICS Trailers focuses on heavy trailer parts that match real workshop requirements rather than generic automotive stock. For example, camshaft hardware, bushes and seals are selected to suit known axle and brake families used in Australian fleets. Listings also highlight critical dimensions so fitment checks stay simple at the counter or in the workshop. Browse Foundation Brakes parts at ICS Trailers in our Foundation Brakes category