Tapered Roller Bearing Assembly Bearing Industry Number 31310 Bore Diameter 50 mm Bore Type Cylindrical Cage Material Pressed Steel Cone Width 27 mm Cup Width 19 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 110 mm Overall Width 29.25 mm Ring Material Carbon Steel Roller Material Carbon Steel System of Measurement Metric