Tapered Roller Bearing Cone Bearing Industry Number 639 Bore Diameter 2 1/2 in Bore Type Tapered Cage Material Chrome Steel Compatible Cup Manufacturer Part Number 632 632B 633 Cone Width 1.625 in For Cup Width 1.25 in Lubricant Material Not Applicable Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Number of Rows One Outside Diameter 4.92 in Ring Material Carbon Steel Roller Material Carbon Steel System of Measurement Inch Dynamic Load Capacity 48 000 lbf