Tapered Roller Bearing Cup Bore Diameter 4 21/64 in Compatible Cone Grainger Part Number 55PX68 Compatible Cone Manufacturer Part Number 34274 34275 34300 34301 34306 34307 Cup Width 0.58 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Outside Diameter 2 57/64 in Overall Width 0.58 in Ring Material Alloy Steel System of Measurement Inch Application Forestry Mining Steel Manufacturing Housing Fillet Radius 0.03 in Ring Material Grade 52100