Ceramic bearing structure

摘要

A ceramic bearing structure is constructed to include an axle bush having an axially extended axle hole, and an axle pivoted to the axle hole of the axle bush, the axle bush having a radial open chamber extended across the axle hole. The radial open chamber diminishes the material of the axle bush, reduces the contact area between the axle and the axle bush, and provides a spacious lubrication grease accumulation chamber.