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