WHAT IS A HYBEID CERAMIC BEARING? A ceramic hybrid bearing is a combination of ceramic balls and bearing quality steel rings.
Special Note: 1 Sometimes the cages will be different. eg.: 67 series thin-walled bearings because the inner wall is very thin will use the crown-shaped iron cage.
2 so sometimes there are different colors of the rubber sealed.
3 The standard clearance of bearings is ISO standard C0 the United States standard K25 the clearance value is 3-18um.