Tapered Roller Bearing Cup Bore Diameter 3 49/64 in Compatible Cone Grainger Part Number 55PX40 Compatible Cone Manufacturer Part Number 29580 29585 29586 29590 Cup Width 0.75 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Outside Diameter 4 1/4 in Overall Width 0.75 in Ring Material Alloy Steel System of Measurement Inch Application Forestry Mining Steel Manufacturing Housing Fillet Radius 3.3 mm Ring Material Grade 52100 Standards ABMA