61904 Full Ceramic Bearing 20x37x9mm6904 Full Ceramic Ball Bearing 20mm x37mm x9mm 61904 Full Ceramic Ball Bearing, measures an inner diameter of 20mm, outer diameter is 37mm and the width is 9mm, Bearing is made from Ceramic. 61904 Ball Bearing Full Ceramic Ball Bearing Cage Material: PTFE (Polytetrafluoroethylene) Balls: Made from Zirconia Ceramic (ZrO) Races Material: Zirconia (ZrO) Ceramic Dimensions: 20mm x 37mm x 9mm Metric ID (inner diameter) Bore: 20mm OD (outer diameter): 37mm
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