CAM=(CA-SKF)=One Piece Brass Cage, Guide Ring. K=Tapered Bore, Taper 1:12. E4=(W33-SKF)=Lubrication Groove And Three Holes In Bearing Outer Ring. C4=Bearing Internal Clearance Greater Than C3. S11=(S1-SKF)=INNER AND OUTER RING HEAT STABILIZED TO 200&