Radial Ball Bearing Bearing Industry Number 6301 Bore Diameter 12 mm Closure Double Sealed For Environment Oily/Greasy Outer Ring Width 12 mm Outside Diameter 37 mm Ring Material Alloy Steel Seal Type Contact System of Measurement Metric Cage Material Steel ABEC Rating 1 Ball Material Alloy Steel Ball Material Grade AISI 52100 Bore Diameter Tolerance +0/-0.008 mm Dynamic Radial Load Capacity 2 180 lbf Includes Retaining Ring No Lubricant Material Polyrex EM