Cylindrical Roller Bearing Bearing Industry Number 3010 Bore Diameter 50 mm Bore Type Tapered 1 12 Cage Material Brass Closure Open Inner Ring Outside Diameter 55 mm Lubricant Material Grease Oil Maximum Speed 8 000 RPM Grease 94 000 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows Two Outer Ring Inside Diameter 74 mm Outside Diameter 80 mm Overall Width 23 mm Ring Material Alloy Steel Roller Material Alloy Steel