Tapered Roller Bearing Cup Bore Diameter 3 1/2 in Compatible Cone Grainger Part Number 55PY04 Compatible Cone Manufacturer Part Number 525 527 528 529 Cup Width 1.063 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Outside Diameter 4 in Overall Width 1.063 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