CAM=(CA-SKF)=One Piece Brass Cage, Guide Ring. K30=Tapered Bore, Taper 1:30. E4=(W33-SKF)=Lubrication Groove And Three Holes In Bearing Outer Ring. C3=INTERNAL CLEARANCE LARGER THAN NORMAL. S11=(S1-SKF)=INNER AND OUTER RING HEAT STABILIZED TO 200