The XRAY 309002 14-piece ceramic bearing set is aimed at hobbyists wanting smoother drivetrain operation. Specifically made to suit XRAY T2 and T3 models, the set includes ten 5x10x4mm bearings and four 10x15x4mm bearings for common shaft and hub locations.
Ceramic bearings cut down on rotational mass compared with steel, helping motors spin more freely and reducing heat buildup under load. That results in steadier lap times and quieter running, while ceramic material gives better resistance to rust and surface wear.
These XRAY 309002 bearings use Si3N4 silicone nitride ceramic balls and arrive degreased with a light application of AeroShell Fluid 12 oil. That preparation provides low friction straight out of the pack while preserving bearing life through many runs.
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