Front Crank Bearing F Compatible with O.S. Engine 25FX, 32SX, 37SZ - OS22831000  [OS22831000]

Bearing F for Crankshafts on O.S. Engine 25FX / 32SX / 37SZ

This crankshaft ball bearing F is supplied as a direct replacement for the specified O.S. Engine 25FX, 32SX and 37SZ models. It acts as the front support bearing, restoring smooth rotation at the crank end while maintaining original engine alignment.

Fitment applies only to the model codes shown in the title, so check your engine designation before ordering. The bearing's purpose is to limit radial play and preserve crankshaft alignment under standard nitro RC engine operating conditions.

Installation guidance: the bearing is pressed or seated into the same crankcase/crankshaft position as the original. Inspect the crankshaft journal for scoring and the bearing seat for correct tolerance during service; replace the bearing if you detect roughness or excessive play. After installation, carry out the normal break-in and tuning checks to ensure smooth idle and consistent high-rpm response.

Maintenance advice: a new bearing can reduce vibration and improve throttle consistency, but it should be considered alongside other routine service tasks. Keep components clean and inspect at regular intervals to extend life.