Abstract: The invention relates to an asynchronous motor comprising a stator or a cage rotor, said cage rotor comprising a shaft (1) and a laminated bundle (2) and rotor rods (3) are arranged within the laminated bundle, running through the openings (10) of each end plate (9) at both ends of the laminated bundle (2) and terminated with a short-circuit ring (4) which electrically connects the ends of the rotor rods (3) on one side of the cage rotor. Each end plate (9) comprises a circumferential projection which at least partly covers the short circuit ring (4) on the outside thereof with a positive fit and each end plate (9) contains a part of the rotor rod (3) and a part of the short circuit ring (4).

Abstract: An electrical machine includes a housing and a shaft which is housed in the housing by means of a fixed bearing and a free bearing. The fixed bearing is formed by two grooved ball bearings which are respectively prestressed in opposite directions by springs. Thus, at least one of the two grooved ball bearings is always prestressed independently of the axial force exerted on the shaft, such that the required radial stiffness of the fixed bearing is guaranteed.

Abstract: The invention relates to an asynchronous motor comprising a stator or a cage rotor, said cage rotor comprising a shaft (1) and a laminated bundle (2) and rotor rods (3) are arranged within the laminated bundle, running through the openings (10) of each end plate (9) at both ends of the laminated bundle (2) and terminated with a short-circuit ring (4) which electrically connects the ends of the rotor rods (3) on one side of the cage rotor. Each end plate (9) comprises a circumferential projection which at least partly covers the short circuit ring (4) on the outside thereof with a positive fit and each end plate (9) contains a part of the rotor rod (3) and a part of the short circuit ring (4).

Abstract: An electric machine includes a shaft and a rotor core mounted onto the shaft and formed of a plurality of stacked laminations. The rotor core has opposite end surfaces for attachment of a plate in such a manner as to allow an axial deflection of the laminations in the area of the plate.

Abstract: The invention aims at increasing the critical speeds of rotation of an electrical machine while using standard components. Therefor, a shaft (11) is housed in the electrical machine by means of a fixed bearing (5, 6) and a free bearing (4). The fixed bearing is formed by two grooved ball bearings which are respectively prestressed in opposite directions by springs. Thus, at least one of the two grooved ball bearings is always prestressed independently of the axial force exerted on the shaft (11), such that the required radial stiffness of the fixed bearing is guaranteed.

Abstract: An electric machine includes a shaft and a rotor core mounted onto the shaft and formed of a plurality of stacked laminations. The rotor core has opposite end surfaces for attachment of a plate in such a manner as to allow an axial deflection of the laminations in the area of the plate.