... 15°( used on high precision and high speed bearings)& 25 °& 40°,and machined brass or synthetic resin cages or ... -row Angular contact ball bearing: machine spindle,high-frequence motors,gas-turbines,centrifuge,small cars front wheels,differential pinion shaft....Double ... ISOPrecision:P6,P5,P4Clearance:C1,C2,C3,C4Contact Angles:15, 25, 30, 40 degreesRaceway Material:GCr15(52100, 100Cr6)Ball Material ...