Abstract: A spare part set for a gearmotor series includes transmissions actuated by electric motors. The series has at least one dimension which may be characterized by at least one physical, mechanical and/or geometrical value, e.g., by nominal power, axis height or torque. Each electric motor includes at least one crankcase, a rotor provided with a rotor axis and a side-shield for a motor bearing arranged within a given size. The crankcase includes an interface with the side-shield for a motor bearing, which is selected such that at least two different embodiments thereof are connectable to the said crankcase.

Abstract: A clamping mechanism for securing a hollow shaft on a solid shaft, the hollow shaft having, at at least one of its ends, an inner cone for receiving an adaptor bushing that has a corresponding outer cone and rests on the solid shaft; and the adapter bushing having an axial longitudinal slot; and a contraction disk, including at least one pressure ring, exerting a contraction force on the hollow shaft with the aid of the at least one pressure ring; and the pressure ring having an axial longitudinal slot.