... catalog:Deep groove ball bearing,Angular contact bearing,Self-aligning bearing,Cylindrical roller bearing,Spherical roller bearing, Taper roller bearing,Needle roller bearing,Block pillow bearing, Auto bearing Retainer:copper cage,nylon ... ,with three oil holesC2/C3/C4: Internal clearance series: C2,C0,C3, and C4 productsproducts in the factorytechnical contral NSK Angular Contact Ball Bearing ...