Tapered Roller Bearing Cup Bore Diameter 6 23/32 in Compatible Cone Grainger Part Number 55PY54 Compatible Cone Manufacturer Part Number HH221430 HH221431 HH221440 HH221449 Cup Width 1.813 in Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Outside Diameter 7 1/2 in Overall Width 1.813 in Ring Material Alloy Steel System of Measurement Inch ABMA Rating Class 0 Application Forestry Mining Steel Manufacturing Housing Fillet Radius 3.3 mm