6909-2RS Ball Bearing 45mm x 68mm x 12mm Bearing 6909-2RS Ball Bearing 6909-2RS, the 6909-2RS bearings are made of Chrome Steel, 6909-2RS can rotate up to 5,500 rpm, 6909-2RS bearing has Rubber Seals to protect the bearing from dust or any possible contamination, 6909-2RS bearings are self lubricated bearings, 6909-2RS bearings are already greased.