Cylindrical Roller Bearing Bearing Industry Number 238 Bore Diameter 190 mm Bore Type Cylindrical Cage Material Brass Closure Open Inner Ring Outside Diameter 206 mm Lubricant Material Grease Oil Maximum Speed 1 700 RPM Grease 2 000 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows One Outer Ring Inside Diameter 324 mm Outside Diameter 340 mm Overall Width 55 mm Ring Material Alloy Steel Roller Material Alloy Steel