Controlflex Coupling Hub, Double, Bore 1.125, OD 2.953, Aluminum
It is longer than equivalent single insert Controlflex types to couple systems with wide distances between shaft ends.Ruland supplied Controlflex couplings are a lightweight, low inertia, and zero-backlash coupling designed for use in encoders, tachometers, resolvers, and light duty power transmission applications.125" bore, 2. It has a balanced design and can accommodate speeds of up to 7500 RPM.