387a+382s tapered roller bearing
387A/382S as a Tapered Roller Bearing with Cup and Cone Set. Sizes: ID: 2-1/4" x OD: 3-13/16" x W: 1" Inches. Match#: 387A/382S,382S,4T-387A,4T-382S. Rolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads.