Cylindrical Roller Bearing Bearing Industry Number 324 Bore Diameter 120 mm Bore Type Cylindrical Cage Material Brass Closure Open Inner Ring Outside Diameter 133 mm Lubricant Material Grease Oil Maximum Speed 2 400 RPM Grease 2 800 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows One Outer Ring Inside Diameter 247 mm Outside Diameter 260 mm Overall Width 55 mm Ring Material Alloy Steel Roller Material Alloy Steel