Cylindrical Roller Bearing Bearing Industry Number 3020 Bore Diameter 100 mm Bore Type Tapered 1 12 Cage Material Brass Closure Open Inner Ring Outside Diameter 108 mm Lubricant Material Grease Oil Maximum Speed 4 000 RPM Grease 4 800 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows Two Outer Ring Inside Diameter 139 mm Outside Diameter 150 mm Overall Width 37 mm Ring Material Alloy Steel Roller Material Alloy Steel