Patent ID: 8134262

Claim:
A kit servomotor, consisting of an electromotor and a rotary encoder, where the electromotor has a motor stator ( 3 , 8 ) and a rotor ( 1 ), which is positioned in unsupported fashion in the motor stator; where the motor stator ( 3 , 8 ) and the rotor ( 1 ) can be installed on the output end; where the rotor ( 1 ) is designed as a hollow shaft, at least on its end ( 9 ) opposite the end used for installation; where the rotary encoder is attached to the electromotor at the end opposite the installation end ( 9 ) and has a stator unit ( 4 ) and an encoder shaft ( 5 ); where the stator unit ( 4 ) is firmly connected to the motor stator ( 3 , 8 ); and where the encoder shaft ( 5 ) is connected to the rotor ( 1 ) using a coupling that is isogonal with respect to the angle of rotation, but elastic in the radial and axial directions, wherein the encoder shaft ( 5 ), at its motor end, which is coaxial to the hollow shaft of the rotor ( 1 ), has an outer diameter that is smaller than the inner diameter of the hollow shaft, and the coupling is axially flat in design and bridges the annular gap between the outer diameter of the encoder shaft ( 5 ) and the inner diameter of the hollow shaft.