A hand wheel actuator for a steer-by-wire steering system having a steering feel that meets drivers' expectations is provided with a housing having an aperture, a steering shaft extending through the aperture and rotatably supported by the housing, an electric motor, a position sensor and torque sensor, and a mechanical steering feel enhancement device. The mechanical steering feel enhancement device is attached to the housing and provides a positive stop function, a return-to-center function, and/or a friction/weight function. The mechanical steering feel enhancement device is in mechanical communication with the steering shaft and may exist as a separate unitary subassembly prior to being installed on the housing. The electric motor has an output shaft that is in mechanical communication with the steering shaft for imparting a torque to the steering shaft.