30204 Tapered Roller Bearing 20x47x15.25mm Single Row for Gearbox Axle Product Overview 302 series are standard single row tapered roller bearings widely used in general industry and automotive fields. This series features moderate taper angle, mainly for medium radial and one‑way axial combined loads. Adopting classic separable structure, the bearings are easy to install, disassemble and adjust clearance. Made of high quality GCr15 bearing steel with precise heat treatment,