30308J Tapered Roller Metric Type

30308J The 30308J is a metric tapered roller bearing conforming to ISO 355 standards, featuring a 40 mm bore diameter and belonging to the 303 series. Tapered roller bearings use conical rolling elements between inner and outer ring raceways to handle combined radial and axial loads. This bearing type is commonly used in automotive wheel hubs, gearboxes, transmissions, and industrial machinery where simultaneous radial and thrust loads are present. The tapered geometry allows for precise adjustment of bearing clearance during installation. 30308JBore/Inner Diameter Inch: 1.575 Bore/Inner Diameter mm: 40 For large orders ($2000+) please inquire by email.