Needle Roller Bearing, Bearing Industry Number 12, Bearing Design FC, Bore Diameter 12 mm, Cage Material , Closure Open, For Environment Extreme High Temperature, Full Complement No, Lubricant Material Grease, Oil, Maximum Speed 19,000 RPM, Maximum Temperature 120 Degrees C, Minimum Temperature -30 Degrees C, Needle Bearing Type Drawn Cup Roller Clutch, Number of Rows One, Outside Diameter 18 mm, Overall Width 16 mm, Ring Material Alloy Steel, Roller Material Alloy Steel