Cylindrical Roller Bearing Bearing Industry Number 316 Bore Diameter 80 mm Bore Type Cylindrical Cage Material Brass Closure Open Inner Ring Outside Diameter 91 mm Lubricant Material Grease Oil Maximum Speed 3 700 RPM Grease 4 400 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows One Outer Ring Inside Diameter 159 mm Outside Diameter 170 mm Overall Width 39 mm Ring Material Alloy Steel Roller Material Alloy Steel