74550/74850 Tapered Roller Bearing 5-1/2" x 8-1/2" x 1-7/8"74550 74850 Tapered Roller Bearing Set 5 1 2" Bore x 8 1 2" OD x 1 7 8" Wide Cone & Cup Included This is a single row tapered roller bearing set made up of cone 74550 and cup 74850. Built from 52100 chrome steel, it's designed to handle massive radial and axial loads. Commonly used in heavy machinery, truck hubs, and demanding industrial assemblies. Cone: 74550 Cup: 74850 Bore (ID): 5 1 2" inch Outer diameter (OD): 8 1 2" inch Cone width (B): 1 7 8"