Tapered Roller Bearing Cone Bearing Industry Number L44643 Bore Diameter 1 in Bore Type Cylindrical Cage Material Pressed Steel Compatible Cup Grainger Part Number 55PY88 Compatible Cup Manufacturer Part Number L44610 Cone Width 0.58 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Number of Rows One Outside Diameter 1.85 in Ring Material Alloy Steel Roller Material Alloy Steel System of Measurement Inch Bore Diameter Tolerance +0.0008 to -0.0000 in