Our 30204 bearing is standard capacity tapered roller bearing with a pressed steel cage is a complete single tapered roller bearing suitable for applications involving high radial loads and axial loads in one direction. Complete single tapered roller bearing assemblies are generally mounted in opposing pairs on a shaft to evenly distribute loads. The single cone and cup set is made of hardened high carbon chromium steel for durability, heat tolerance, and resistance to deformity under heavy loads and corrosion. The pressed steel cage prevents the rollers from coming into contact with each other during use, reducing friction, vibration, and noise. As part of a separable tapered roller bearing unit, this single tapered roller bearing assembly is composed of a cone and cup set and has an open design that allows for lubrication and accurate adjustments. This tapered roller bearing is for use in high-load, moderate-speed applications that include automotive axle systems and conveyor systems in heavy duty industries such as mining, construction and agriculture, among others. Specifications: Bearing Model: 30204 Bearing Type: Single Row Tapered Roller Bearing Material: Chromium Steel Outside Diameter : 47mm Bore Diameter: 20mm Bearing Thickness: 15.25mm Package included: 1 x 30204 Taper Roller Bearing