Tapered Roller Bearing Cone, Bearing Industry Number 387AS, Bore Diameter 2 1/4 in, Bore Type Cylindrical, Cage Material Pressed Steel, Compatible Cup Grainger Part Number 55PX75, 55PX77, Compatible Cup Manufacturer Part Number 382, 382A, Cone Width 0.864 in, Maximum Temperature 250 Degrees F, Minimum Temperature -40 Degrees F, Number of Rows One, Outside Diameter 3.622 in, Ring Material Alloy Steel, Roller Material Alloy Steel, System of Measurement Inch, Dynamic Load Capacity 86.5 kN