NTN 30307 Tapered Roller Bearing Set - 1.3780 in Bore, 3.1496 in OD, 21 mm Cone Width, 18 mm Cup Width, Class 0 Precision Rating SPECIFICATIONS Bore Diameter1.3780 in Cup Width18 mm Assembly TypeCone & Cup Outside Diameter3.1496 in Cone Width21 mm Closure TypeOpen Overall Width0.8957 in ABMA Precision RatingClass 0 Bearing MaterialCase Carburized Steel Operating Temperature Range-40 to 250 °F Dynamic Load Capacity16900 lbf Fillet Radius1.5 mm Static Load Capacity17300 lbf Manufacturer UPC Number4547359003307 Harmonization Code8482.20.0040 Weight1.16 lbs Package Includes : One (1) BEARING 30307 NTN