Ball Bearing OS22630002 for O.S. Engine R 25SF, 25FX, 32F, FS-26S, FS-30S, FS-40S  [OS22630002]

Product Summary and Fitment Notes

This ball bearing is an RC-scale replacement part intended for use with the O.S. engine models listed in the product name. It is supplied as a single bearing element designed to support rotational shafts inside small glow or gas model engines and to reduce contact friction between moving components.

Fitment applies to the engine codes indicated: R 25SF, 25FX, 32F, FS-26S, FS-30S and FS-40S. When servicing these engines confirm bearing size and clearance visually before pressing a new unit into place to ensure it seats correctly and runs true.

Installation advice: employ a bearing press or soft-jaw vise to avoid damaging the race or rollers, maintain clean mating surfaces, and avoid applying force to the inner race alone which can alter preload. Check shaft runout and axial play after assembly to preserve expected engine behaviour.

Maintenance role: replacing worn bearings restores smooth rotation and can reduce internal mechanical losses, helping maintain consistent idle and throttle control; this is routine maintenance rather than a performance enhancement.