A drive device includes an electric motor and a gear unit that is driven by the electric motor. The electric motor has a laminated stator core which includes stator windings and is accommodated in a stator housing. The stator housing has recesses that are axially uninterrupted, i.e. in particular in the direction of the rotor shaft axis, and the stator housing is surrounded, especially radially surrounded, by a housing of the drive device, in particular a tubular housing and/or a cup-shaped housing, and the housing is set apart from the stator housing, in particular such that an especially circulating airflow is able to be provided within the housing, the recesses in particular guiding the airflow through in the axial direction, and the airflow being returned in the opposite direction in the set-apart region between the stator housing part and the housing.

A cooling assembly for an electric machine is disclosed. The cooling assembly may include a generally cylindrical cooling jacket for receiving a shaft, a rotor and a stator. Further, the cooling jacket jacket may be disposed in an electric machine housing. Additionally, the cooling assembly may include at least two first passages in the cooling jacket for circulating a first coolant and at least one second passage in the cooling jacket for circulating a second coolant, the second passage being disposed between the at least two first passages. Further, the cooling assembly may include a third passage on an exterior of the machine housing, the third passage extending through the housing to fluidly connect the at least two first passages and bypass the second passage.

A cooling assembly for an electric machine is disclosed. The cooling assembly may include a generally cylindrical cooling jacket for receiving a shaft, a rotor and a stator. Further, the cooling jacket jacket may be disposed in an electric machine housing. Additionally, the cooling assembly may include at least two first passages in the cooling jacket for circulating a first coolant and at least one second passage in the cooling jacket for circulating a second coolant, the second passage being disposed between the at least two first passages. Further, the cooling assembly may include a third passage on an exterior of the machine housing, the third passage extending through the housing to fluidly connect the at least two first passages and bypass the second passage.

A motor assembly including a rotor rotatable about a rotating shaft; a stator formed as a continuous body and including multiple teeth areas, multiple body areas disposed outside of the multiple teeth areas and having a first width, with the plurality of teeth areas extending from the plurality of body areas in a direction toward the rotating shaft, and multiple connection areas connecting multiple body areas; and a coil wound around each of the multiple teeth areas, wherein each of the multiple connection areas has a bending point having a second width larger than or equal to 0.05 of and smaller than or equal to 0.25 of the first width, and is in contact with another connection area with reference to the bending point.

A centrifugal pump includes a drive having a fan for generating a first air flow, a motor electronic system which is supported by a heat dissipation arrangement which has at least one opening for the inflow of a second air flow which mixes with at least a portion of the first air flow to enhance cooling of the motor electronic system.

A centrifugal pump includes a drive having a fan for generating a first air flow, a motor electronic system which is supported by a heat dissipation arrangement which has at least one opening for the inflow of a second air flow which mixes with at least a portion of the first air flow to enhance cooling of the motor electronic system.

A drive includes an electric motor with a brake and a fan cowl. The fan cowl is connected to a housing, in particular to a stator housing part, of the electric motor in a detachable manner. A rod is able to be passed through a cover part, which projects through a recess, in particular a recess arranged in the form of a slot, in the fan cowl.

A drive includes an electric motor with a brake and a fan cowl. The fan cowl is connected to a housing, in particular to a stator housing part, of the electric motor in a detachable manner. A rod is able to be passed through a cover part, which projects through a recess, in particular a recess arranged in the form of a slot, in the fan cowl.

A transmission includes a fan assembly having a fan wheel, a cover, and a grating. The fan wheel is connected in a torsionally fixed manner to the input shaft of the transmission, and the fan cover is fixed in place on a holding frame, which, for example, includes multiple parts and is fastened to the housing of the transmission. The grating is formed by two grating parts, whose first separating line is a straight segment or is formed by two mutually aligned straight segments, and the cover includes two cover parts, whose second separating line is a plane curve, made up of straight segment sections.

The invention relates to an electric motor comprising an electronics housing in which motor electronics are accommodated, a stator bush for accommodating a stator and which is axially adjacent to the electronics housing, and a cooling impeller which is axially adjacent to the stator bush and which can be driven via a rotor, wherein a fluidically connected axial through-channel is provided in the stator bush and in the electronics housing, through which channel a cooling air flow generated by the cooling impeller can be conveyed, and wherein the cooling impeller has a blade geometry such that, in normal operation of the electric motor, the cooling air flow is drawn in radially from outside at a peripheral radial air inlet of the cooling impeller and pressed through the through-channel in axial direction.