Whitney Tool 30304 Keyseat Milling Cutter, Solid Carbide, 1/8" Cut Diameter, 1/16" Cut Width

The 30304 is a tapered roller bearing conforming to ISO 355 metric standards, featuring a 20 mm bore diameter and belonging to the 303 series. This single-row tapered roller design separates radial and thrust loads through its cone, rollers, and cup assembly.

Tapered roller bearings are widely used in automotive wheel hubs, transmissions, differentials, and industrial gearboxes where combined radial and axial loads are present. The tapered geometry allows for precise adjustment of bearing clearance and optimal load distribution across the roller contact path.