Yokomo YOKBB850C2 5x8x2.5mm Ceramic Bearing Replacement  [YOKBB850C2]

BB-850C2 Hybrid Ceramic Bearing by Yokomo

The Yokomo YOKBB850C2 is a 5x8x2.5mm ceramic ball bearing intended for compact RC bearing seats where low friction and precise fit are important. It replaces standard 5x8x2.5mm bearings in wheel hubs, gearbox components, motor shafts and similar applications on electric RC cars and models.

This hybrid bearing uses ceramic balls with stainless steel races to reduce rolling friction while maintaining race strength. The result is typically smoother rotation and reduced drag compared with some all-steel bearings, with no change to standard mounting dimensions.

Installation pointers: seat the bearing evenly using a driver or a socket that contacts the race only, and avoid direct impacts on races. For removal, use a bearing puller or press out carefully from the far side to protect threads and adjacent sealed parts.

Service guidance: inspect periodically for contamination, clean with an appropriate solvent if needed, and apply a light oil or low-viscosity grease designed for ceramic/steel hybrids. Proper care keeps bearings running smoothly and extends usable life.

For model builders replacing compact bearings with ceramic alternatives, the BB-850C2 provides a like-for-like size with improved rolling characteristics and broad compatibility.