Tapered Roller Bearing Cone, Bearing Industry Number 14138A, Bore Diameter 1 3/8 in, Bore Type Cylindrical, Cage Material Pressed Steel, Compatible Cup Grainger Part Number 55PX09, Compatible Cup Manufacturer Part Number 14272, 14273, 14274, 14274A, 14276, 14277, 14282, 14283, 14284, 14299, Cone Width 0.48 in, Ring Material Alloy Steel, Roller Material Alloy Steel.