Abstract: Disclosed is a drive arrangement for a tractor. In one example, the drive arrangement includes a first powertrain, a power take-off for driving a coupled attachment unit, and/or including a pump power take off for driving at least one hydraulic pump. A second powertrain has a vehicle transmission with at least one transmission output for driving at least one vehicle axle. A first electric machine can be coupled in terms of drive to the first powertrain. A second electric machine can be coupled in terms of drive to the second powertrain.

Abstract: An electrical machine includes a first active part and a second active part. Both the first active part and the second active part have a plurality of laminated sub-cores, with each laminated sub-core having a plurality of individual laminations. Each lamination is defined by an axial width. The laminated sub-cores are mutually spaced in an axial direction such that a respective radial cooling slot is formed between two adjacent laminated sub-cores. The radial cooling slots in the first active part are offset in the axial direction in relation to one another in comparison to the radial cooling slots in the second active part, and the sum of the axial widths of all individual laminations in the first active part corresponds to the sum of the axial widths of all individual laminations in the second active part.

Abstract: A contact-making rotary transmission includes a brush forming an electrically conductive sliding contact element and a contact path of electrically conductive material for contact with the brush. The brush is guided and/or held by an arrangement which includes a plurality of carrier segments arranged axially behind one another. Each carrier segment has attached thereto a brush receptacle such as to define a first gap between the carrier segment and the brush receptacle. The brush receptacle includes a stationary receiving shaft which is formed by walls and configured to receive the brush, and a guide element which is provided on a wall of the receiving shaft so as to define a second gap between the brush and the wall. At least one of the walls includes an opening in communication with the first and second gaps to allow a flow of cooling air for cooling the brush.

Abstract: An electrical machine includes a first active part and a second active part. Both the first active part and the second active part have a plurality of laminated sub-cores, with each laminated sub-core having a plurality of individual laminations. Each lamination is defined by an axial width. The laminated sub-cores are mutually spaced in an axial direction such that a respective radial cooling slot is formed between two adjacent laminated sub-cores. The radial cooling slots in the first active part are offset in the axial direction in relation to one another in comparison to the radial cooling slots in the second active part, and the sum of the axial widths of all individual laminations in the first active part corresponds to the sum of the axial widths of all individual laminations in the second active part.

Abstract: A contact-making rotary transmission includes a brush forming an electrically conductive sliding contact element and a contact path of electrically conductive material for contact with the brush. The brush is guided and/or held by an arrangement which includes a plurality of carrier segments arranged axially behind one another. Each carrier segment has attached thereto a brush receptacle such as to define a first gap between the carrier segment and the brush receptacle. The brush receptacle includes a stationary receiving shaft which is formed by walls and configured to receive the brush, and a guide element which is provided on a wall of the receiving shaft so as to define a second gap between the brush and the wall. At least one of the walls includes an opening in communication with the first and second gaps to allow a flow of cooling air for cooling the brush.