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

Replacement Bearing OS28631000 for R GT60

The O.S. Engine OS28631000 is supplied as a replacement crankshaft bearing designated R GT60 for use with compatible R GT60 crankshaft assemblies. It acts as the bearing surface for the crankshaft, reducing friction and correcting play caused by worn components.

To fit, disassemble the engine enough to access the crankcase and bearing seat, inspect the mating surfaces for damage or debris, and press the bearing squarely into position using even force. Once installed, manually rotate the shaft and check axial clearance to ensure the engine will operate without binding.

From a maintenance viewpoint, this bearing helps cut mechanical drag and steadies crankshaft rotation, which supports consistent idle and throttle behavior. Inspect bearings during scheduled service to catch contamination or premature wear early.