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