Ball Thrust Bearing Ball Material Steel Bearing Industry Number F4-10M Bore Diameter 4 mm Cage Material Steel Closure Open Housing Washer Bore 4.2 mm Lubricant Material Grease Oil Maximum Speed 16 000 RPM Grease 21 000 RPM Oil Outside Diameter 10 mm Overall Width 4 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