Cylindrical Roller Bearing Bearing Industry Number 328 Bore Diameter 140 mm Bore Type Cylindrical Cage Material Brass Closure Open Inner Ring Outside Diameter 156 mm Lubricant Material Grease Oil Maximum Speed 2 100 RPM Grease 2 400 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows One Outer Ring Inside Diameter 284 mm Outside Diameter 300 mm Overall Width 62 mm Ring Material Alloy Steel Roller Material Alloy Steel