C=(C-SKF)=15° Contact Angle. T=Machined Laminated Phenolic Cage (Single Row Radial or A. C. Bearings). DUM=(DM-Ax. Int. Cl/Pr Segment)/(DGB-SKF)=Set Of 2 Universal Bearings, Medium Preload. P5=Dimensional And Running Accuracy To ISO Tolerance Cl