Tapered Roller Bearing Cup Bore Diameter 4 9/32 in Compatible Cone Grainger Part Number 55PY09 Compatible Cone Manufacturer Part Number 555 555S 557S 558 559 560 560S Cup Width 1.187 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Outside Diameter 4 7/8 in Overall Width 1.187 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