61909-2RS Bearing 45x68x12 Sealed bearing 15mm and pulleys

and pulleys

The 510024 is a heavy-duty double-row ball bearing designed for automotive wheel hubs

One 20mm Linear Bearing

Equal: 623ZZ

and min RPM readings

61909-2RS Bearing 45x68x12 Sealed bearing 15mm and pulleys6909 2RS Ball Bearing 45mm x 68mm x 12mm Bearing 6909 2RS Ball Bearing 6909 2RS, the 6909 2RS bearings are made from high strength 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. Double Sealed ball bearings 6909 2RS 6909 2RS Closures: Rubber Seals Quantity: 1 Bearing