Tapered Roller Bearing Cone, Bearing Industry Number 2580, Bore Diameter 1 1/4 in, Bore Type Tapered, Cage Material Chrome Steel, Compatible Cup Manufacturer Part Number 2520, 2523D, 2523S, Cone Width 0.998 in, Lubricant Material Not Applicable, Maximum Temperature 250 Degrees F, Minimum Temperature -40 Degrees F, Number of Rows One, Outside Diameter 2.52 in, Ring Material Carbon Steel, Roller Material Carbon Steel, System of Measurement Inch, Dynamic Load Capacity 15,500 lbf