Tapered Roller Bearing Cone Bearing Industry Number 71450 Bore Diameter 4 1/2 in Bore Type Cylindrical Cage Material Pressed Steel Compatible Cup Grainger Part Number 55PY30 Compatible Cup Manufacturer Part Number 71750 Cone Width 1.937 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Number of Rows One Outside Diameter 7.126 in Ring Material Alloy Steel Roller Material Alloy Steel System of Measurement Inch Dynamic Load Capacity 335 kN