1. Product Overview J90354/748 (Full marking: J90354/J90748) is J-series single row tapered roller bearing. This assembly consists of separable inner cone J90354 and outer cup J90748. The cone assembly with rollers and cage can be mounted separately from the outer ring, convenient for installation, inspection and maintenance. It withstands combined radial load and one-way axial load. Optimized tapered roller contact geometry delivers strong shock resistance and heavy load