608 6001 6001 6002 6003 6004 6005 6006 6007 6008 Si3N4 Silicon Nitride Full Ceramic Bearings
2RS Full Ceramic Si3N4 Silicon Nitride bearings
Inner/outer races: Si3N4 Ceramic (Silicon Nitride)
Balls: Si3N4 Ceramic (Silicon Nitride)
Cage: PTFE