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