Tapered Roller Bearing Cone Bearing Industry Number 39581 Bore Diameter 2 1/4 in Bore Type Cylindrical Cage Material Pressed Steel Compatible Cup Grainger Part Number 1YTX5 Compatible Cup Manufacturer Part Number 39520 Cone Width 1.187 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Number of Rows One Outside Diameter 4.213 in Ring Material Alloy Steel Roller Material Alloy Steel System of Measurement Inch Dynamic Load Capacity 153 kN