Tapered Roller Bearing Cup Bore Diameter 2 7/16 in Compatible Cone Grainger Part Number 55PY66 Compatible Cone Manufacturer Part Number HM89440 HM89443 HM89444 HM89446 HM89448 Cup Width 0.906 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Outside Diameter 3 in Overall Width 0.906 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