Crankshaft Ball Bearing OS27381210 for 32HS-HX, 46HS, 6H, 7H by O.S. Engine  [OS27381210]

Nitro engine crank bearing details

This O.S. Engine crankshaft ball bearing serves as an RC-scale replacement specified for the engine codes listed in the product name. It gives crankshaft support for 32HS-HX, 46HS, 6H and 7H engines while helping to reduce rotating friction for more consistent throttle response.

During routine engine service replace bearings that show wear to maintain crank balance and correct clearances. Fit the bearing using a press or a socket that contacts the outer race to prevent damage to the internal balls or raceways. After fitting, check for free, smooth rotation and correct endplay before you reassemble the engine.

Care pointers: inspect bearings for rough spots, pitting or heat discoloration after extended use, remove debris from the crankcase before installing a new part, and favour a light oil after break-in over heavy grease to avoid trapping dirt. A low-friction bearing supports steady RPM and simplifies needle tuning.