20-Pack 6903 Full Ceramic Si3N4 Bearing 17x30x7mm6903 Full Ceramic Ball Bearing Si3N4 Pack of 20 6903 Full Ceramic Ball Bearing, measures an inner diameter of 17mm, outer diameter is 30mm and the width is 7mm, a standard bearing size commonly used in a variety of industrial and commercial applications, Bearing is made from Ceramic. 6903 Ball Bearing Full Ceramic Ball Bearing Inner outer races: Si3N4 Ceramic Balls: S3N4 Ceramic Cage Material: PTFE (Polytetrafluoroethylene) Dimensions: 17mmx30mmx7mm
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