Ball Thrust Bearing Ball Material Steel Bearing Industry Number F9-20M Bore Diameter 9 mm Cage Material Steel Closure Open Housing Washer Bore 9.2 mm Lubricant Material Grease Oil Maximum Speed 12 000 RPM Oil 8 000 RPM Grease Outside Diameter 20 mm Overall Width 7 mm Seal Material Not Applicable Seal Type Not Applicable System of Measurement Metric Thrust Bearing Type Separable Ball Thrust Bearing Washer Material Steel Ball Material Grade SUJ2 Cage Material Grade SUJ2