Cylindrical Roller Bearing Bearing Industry Number 210 Bore Diameter 50 mm Bore Type Cylindrical Cage Material Brass Closure Open Inner Ring Outside Diameter 56.5 mm Lubricant Material Grease Oil Maximum Speed 6 900 RPM Grease 8 100 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows One Outer Ring Inside Diameter 83.5 mm Outside Diameter 90 mm Overall Width 20 mm Ring Material Alloy Steel Roller Material Alloy Steel