30309J Tapered Roller Metric Type

30309J The 30309J is a metric tapered roller bearing conforming to ISO 355 standards, featuring a 45 mm bore diameter. Tapered roller bearings use conical raceways and tapered rollers to handle combined radial and axial loads efficiently. This bearing type is commonly used in automotive wheel hubs, gearboxes, conveyor systems, and industrial machinery where both radial and thrust loads are present. The tapered geometry allows for precise load distribution and adjustability during installation. Interchange / cross reference TIMKEN 30309M Cross-references are provided as a guide — verify dimensions and fit for your application. 30309JBore/Inner Diameter Inch: 1.772 Bore/Inner Diameter mm: 45 Outside Diameter Inch: 3.937 Outside Diameter mm: 100 For large orders ($2000+) please inquire by email.