R GT60 Crankshaft Ball Bearing - O.S. Engine OS28631000  [OS28631000]

OS28631000 Bearing for R GT60

This O.S. Engine OS28631000 replacement bearing is an RC crankshaft part marked R GT60, intended for service on matching R GT60 crankshaft assemblies. It functions as the rotating interface on the crankshaft and restores smooth rotation when wear or damage has increased friction or endplay.

Installation is straightforward: remove the engine head and crankcase as required, inspect the crankshaft journal and bearing seat for scoring or contaminants, then press the bearing into its race with steady axial pressure until fully seated. After refitting, check shaft endplay and free rotation before reassembly to confirm correct fitment.

In setup and tuning, this bearing reduces mechanical drag and stabilizes crankshaft movement to help preserve idle stability and throttle response. Regular inspection during service intervals will reveal early wear or contamination that could degrade performance.