S7204CD/HC Angular Contact Ball Bearing 20×47×14mm 15° Contact Angle for CNC Machine Spindle Product Overview S7204CD/HC is single row hybrid ceramic angular contact ball bearing with 15° contact angle. It uses GCr15 steel raceways paired with silicon nitride ceramic balls. This bearing supports combined radial and one-direction axial loads. Ceramic rolling elements reduce centrifugal force at high speed, lower heat buildup and prevent electric corrosion, well suited for high