Tapered Roller Bearing Cone, Bearing Industry Number 3578, Bore Diameter 1 3/4 in, Bore Type Cylindrical, Cage Material Pressed Steel, Compatible Cup Grainger Part Number 55PX70, Compatible Cup Manufacturer Part Number 3520, Cone Width 1.215 in, Maximum Temperature 250 Degrees F, Minimum Temperature -40 Degrees F, Number of Rows One, Outside Diameter 3.13 in, Ring Material Alloy Steel, Roller Material Alloy Steel, System of Measurement Inch, Dynamic Load Capacity 104 kN, Inside Diameter 1.75 in