608 bearing is type of deep groove ball bearing, 8 is the inner diameter of 8 mm. Dimensions are 22mm outer diameter, 7mm height.Normally there are 7 pcs steel balls and the diameter of the steel ball is 3.969mm. There are many type of 608 closure type such as 608 open ,608 Z,608ZZ ,608RS,6082RS bearing;For materials ,there are carbon steel, Chrome steel(GCr15), stainless steel, plastic, ceramics, etc. The cages are: nylon cages, steel cages, ceramic cages, . 608 bearings have a wide range of applications, such as in motors, sport machine, trolleys, skates, and more.

Best quality full ceramic 608 skate bearing with size 8*22*7mm ,all parts are with material ceramic ZrO2,with ceramic material ,this bearing have a high precision and free in spin .