O.S. Engine OS22831000 Crankshaft Ball Bearing F for 25FX, 32SX, 37SZ  [OS22831000]

Crankshaft Ball Bearing F for 25FX/32SX/37SZ

This crankshaft ball bearing F is an RC-scale replacement part specified for the listed O.S. Engine models 25FX, 32SX and 37SZ. It serves as the front crankshaft bearing and is intended to restore smooth rotational support at the crankshaft end without altering engine geometry.

Compatibility is limited to the model codes named in the product title, so confirm your engine code before ordering. The component's role is mechanical support: it reduces radial play and helps maintain crankshaft alignment under normal nitro RC engine loads.

Installation notes: the bearing is pressed or seated onto the crankcase/crankshaft interface in the same position as the original part. During service, inspect the crankshaft journal for scoring and the bearing bore for fit; replace the bearing if you detect roughness or noticeable play. After installation, run-in should follow your engine's usual break-in and tuning procedures to verify smooth idle and consistent high-rpm behavior.

Tuning and maintenance: using a fresh bearing can reduce vibration and contribute to predictable throttle response, but it is one of several maintenance items that affect engine performance. Regular inspection intervals and cleanliness during installation will extend service life.