Tapered Roller Bearing Cone, Bearing Industry Number LM12749, Bore Diameter 55/64 in, Bore Type Cylindrical, Cage Material Pressed Steel, Compatible Cup Grainger Part Number 55PY99, Compatible Cup Manufacturer Part Number LM12710, Cone Width 0.655 in, Maximum Temperature 250 Degrees F, Minimum Temperature -40 Degrees F, Number of Rows One, Outside Diameter 2.441 in, Ring Material Alloy Steel, Roller Material Alloy Steel, System of Measurement Inch, Bore Diameter Tolerance +0.020 to -0 mm