Tapered Roller Bearing Assembly Bearing Industry Number 31307 Bore Diameter 35 mm Bore Type Cylindrical Cage Material Pressed Steel Cone Width 21 mm Cup Width 15 mm Flange Diameter Not Applicable Flange Type Non-Flanged Lubricant Material Not Applicable Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Number of Rows One Outside Diameter 80 mm Overall Width 22.75 mm Ring Material Carbon Steel Roller Material Carbon Steel System of Measurement Metric