Needle Roller Bearing Bearing Industry Number 12 Bearing Design FC Bore Diameter 12 mm Cage Material Thermoplastic 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