Timken Deep Groove Metric Ball Bearing 6011-2RSDeep Groove Metric Ball Bearing Rubber Sealed 55mm x 90mm x 18mm Deep groove ball bearings are particularly versatile. They are suitable for high and very high speeds, accommodate radial and axial loads in both directions and require little maintenance. Deep groove ball bearings are the most widely used bearing. Inside Diameter 55mm Outside Diameter 90mm Width 18mm Rubber Sealed Chrome Steel Weight 480 gms