A bogie of a rail vehicle has at least one wheelset with two oppositely situated wheels that are rigidly connected to one another, a wheelset bearing arrangement of the wheelset within the two wheels, a traction motor which directly drives the wheelset, and an aerodynamic paneling enclosure of the bogie. The traction motor is a permanently excited synchronous motor with liquid cooling.

A bogie of a rail vehicle has at least one wheelset with two oppositely situated wheels that are rigidly connected to one another, a wheelset bearing arrangement of the wheelset within the two wheels, a traction motor which directly drives the wheelset, and an aerodynamic paneling enclosure of the bogie. The traction motor is a permanently excited synchronous motor with liquid cooling.

Running gear for a rail vehicle includes a first drive unit, a running gear frame and a wheelset, wherein the first drive unit is supported via a first spring device and a second spring device on a first wheelset bearing housing or on a first swing arm and via a third spring device and a fourth spring device on a second wheelset bearing housing or on a second swing arm, where a first damper device, arranged between the first wheelset bearing housing or the first swing arm and the drive unit, is advantageously connected in parallel with the first spring device, the second spring device, the third spring device and the fourth spring device, where the damping device has a damper and, connected in series therewith, a first stop buffer and a second stop buffer to achieve a space-saving drive bearing having effective suspension and damping.

A flexible gear coupling includes two external gears and two internal gears meshing with the respective two external gears. A tooth root crowning radius of each external gear is smaller than a tooth tip crowning radius of the external gear. The external gear is formed such that a reference tooth height that is a tooth height at a tooth width direction middle position is smaller than an end tooth height that is a tooth height at a tooth width direction end position. A ratio of the end tooth height to the reference tooth height is set to 1.21 or more, and/or a ratio Rc/Rb of the tooth root crowning radius to the tooth tip crowning radius is set to 0.37 or less.

A flexible gear coupling includes two external gears and two internal gears meshing with the respective two external gears. A tooth root crowning radius of each external gear is smaller than a tooth tip crowning radius of the external gear. The external gear is formed such that a reference tooth height that is a tooth height at a tooth width direction middle position is smaller than an end tooth height that is a tooth height at a tooth width direction end position. A ratio of the end tooth height to the reference tooth height is set to 1.21 or more, and/or a ratio Rc/Rb of the tooth root crowning radius to the tooth tip crowning radius is set to 0.37 or less.

An electric machine has a rotor on a rotor shaft. The rotor shaft is supported on bearings such that the rotor and the rotor shaft are rotatable around an axis of rotation. The rotor is surrounded radially on the outside by a stator, the stator by a casing. Covering elements are arranged at the axial ends of the rotor and stator, by which the rotor and the stator are enclosed with respect to the environment of the electric machine. One covering element is surrounded radially on the outside, and axially on the side facing away from the rotor and stator there, by an air guide element, the other covering element by an inner ring element. First and second cooling channels running axially are arranged in the casing or between the casing and stator. Rotor channels running axially are arranged in the rotor shaft and/or in the rotor.

A motor suspension assembly includes a frame bracket configured to be coupled with a vehicle frame having mounting locations for upper and lower suspension bars that are positioned for a direct current (DC) traction motor to rest upon the upper suspension bar and for elastic pads to be disposed between the upper and lower suspension bars. The frame bracket is configured to be coupled with the vehicle frame in place of at least one of the upper suspension bar or the lower suspension bar. The assembly also includes a dog bone suspension link configured to be coupled with a nose bracket of an alternating current (AC) traction motor and the frame bracket. The dog bone suspension link is configured to absorb vibration by at least partially rotating about one or more of the nose bracket or the frame bracket during operation of the AC traction motor.

A motor suspension assembly includes a frame bracket configured to be coupled with a vehicle frame having mounting locations for upper and lower suspension bars that are positioned for a direct current (DC) traction motor to rest upon the upper suspension bar and for elastic pads to be disposed between the upper and lower suspension bars. The frame bracket is configured to be coupled with the vehicle frame in place of at least one of the upper suspension bar or the lower suspension bar. The assembly also includes a dog bone suspension link configured to be coupled with a nose bracket of an alternating current (AC) traction motor and the frame bracket. The dog bone suspension link is configured to absorb vibration by at least partially rotating about one or more of the nose bracket or the frame bracket during operation of the AC traction motor.

A bogie of a rail vehicle has at least one wheelset with two oppositely situated wheels that are rigidly connected to one another, a wheelset bearing arrangement of the wheelset within the two wheels, a traction motor which directly drives the wheelset, and an aerodynamic paneling enclosure of the bogie. The traction motor is a permanently excited synchronous motor with liquid cooling.

A bogie of a rail vehicle has at least one wheelset with two oppositely situated wheels that are rigidly connected to one another, a wheelset bearing arrangement of the wheelset within the two wheels, a traction motor which directly drives the wheelset, and an aerodynamic paneling enclosure of the bogie. The traction motor is a permanently excited synchronous motor with liquid cooling.