Cylindrical Roller Bearing Bearing Industry Number 212 Bore Diameter 60 mm Bore Type Cylindrical Cage Material Brass Closure Open Inner Ring Outside Diameter 68 mm Lubricant Material Grease Oil Maximum Speed 5 800 RPM Grease 6 800 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows One Outer Ring Inside Diameter 102 mm Outside Diameter 110 mm Overall Width 22 mm Ring Material Alloy Steel Roller Material Alloy Steel