Abstract: A motor housing (2) has a shaft section to receive a motor shaft (4) and a motor section to receive motor electronics (5) and motor windings (6). The shaft section and the motor section are separated from each other in a sealed manner by a separating pot (7) arranged in the motor housing (2). A metal ball bearing pot (8) with a ball bearing (9) is arranged in the separating pot. The ball bearing pot (8) lies indirectly against a motor housing section that is connected to the outer surroundings, via the separating pot (7). Thus, the motor housing functions as a cooling body. Accordingly, heat generated by the ball bearing (9) during operation is dissipated onto the motor housing and the outer surroundings, via the ball bearing pot (8) and the separating pot (7).

Abstract: The invention relates to an external rotor device with a rotor housing designed to receive at least one rotor and with at least one sensor magnet provided on the rotor housing. The sensor magnet is arranged/can be arranged in sensory correlation with and in a predefinable relative position relative to the rotor.

Abstract: The disclosure relates to a position detection device for determining the position of the diaphragm or the drive piston of an electric-motor-driven diaphragm pump, in particular detecting the upper and lower reversal point (Po, Pu) in the movement curve of the diaphragm of a diaphragm pump operated in an electric-motor-driven manner via eccentric means, wherein a diaphragm actuated by a drive connecting rod closes a conveying chamber with valve means provided on an inlet and outlet side such that the volume can be changed between a minimum and maximum volume, whereby a reciprocating movement of an electric motor having a rotor attached to a shaft is converted into an actuation movement of the drive connecting rod via the effect of the eccentric means, wherein the position detection device has detecting means for detecting the average value position of the rotor shaft, as well as an evaluation device in order to determine at least the position of the upper reversal point of the diaphragm from the average value

Abstract: An electric motor has a motor casing (2) which has a shaft portion for accommodating a motor shaft (4), and a motor portion for accommodating motor electronics (5) and motor windings (6). The shaft portion and the motor portion are separated from each other in a sealed manner by a can (7) in the motor casing (2). The can (7) has a metal ball bearing housing (8) in which a ball bearing (9) for mounting the motor shaft (4) is fastened, and wherein the ball bearing housing (8), indirectly via the can (7), adjoins, with an intermediate gap, a casing cover (3) that forms part of the motor casing (2). The casing cover (3) acts as a heat sink, and heat generated by the ball bearing (9) during operation is dissipated onto the casing cover and into the outer environment via the ball bearing housing (8) and the can (7).

Abstract: The disclosure relates to a rotor (1) and an electric motor having the rotor. The rotor is equipped with a permanent magnet (6) extending around an axis of rotation of the rotor, on which a plastic overmolding (3) is provided, which defines a shaft passage (10) for the fastening receptacle of a motor shaft (14) of the electric motor along the axis of rotation, and wherein a press-fit bushing (2), into which the motor shaft can be pressed by a press fit and can be fixed on the rotor, is arranged directly adjoining the shaft passage (10) formed by the plastic overmolding (3).

Abstract: The disclosure relates to an electric motor comprising a motor casing (2) that includes a shaft portion for accommodating a motor shaft (4), and a motor portion in which motor electronics (5) and motor windings (6) are arranged, the shaft portion and the motor portion being separated from each other in a sealed manner by a can (7) that is arranged in the motor casing (2). An inner rotor and, axially adjacent thereto, a metal ball bearing pot (8) are arranged in the shaft portion of the can (7), and a ball bearing (9) for mounting the motor shaft (4) is secured in the ball bearing pot (8).

Abstract: A radial ventilator (1) has a base part (2), a housing part (4), with a discharge 33, placed on the base part (2), a motor electronics unit (98), and an internal rotor electric motor. The motor drives a ventilator wheel (3) via a shaft (7). The motor electronics unit (98) and a stator (32) of the electric motor are encapsulated by an extrusion coating (17) in the base part (2) and together form an integral one-piece structural unit. The radial ventilator (1) has a pressure chamber (D) enlarging in a spiral shape around the ventilator wheel (3). The pressure chamber (D) is formed and defined by the housing part (4) and the extrusion coating (17).

Abstract: The invention relates to an electric motor with a motor housing (2) which has a shaft section for receiving a motor shaft (4) and a motor section for receiving motor electronics (5) and motor windings (6), wherein the shaft section and the motor section are separated from each other in a sealed manner by a separating pot (7) arranged in the motor housing (2), wherein, in the separating pot (7), a metal ball bearing pot (8) is arranged, in which a ball bearing (9) is fixed, and wherein the ball bearing pot (8) lies indirectly against a motor housing section which is connected to the outer surroundings, via the separating pot (7), such that the motor housing functions as a cooling body, and heat generated by the ball bearing (9) during operation is dissipated onto the motor housing and the outer surroundings via the ball bearing pot (8) and the separating pot (7).

Abstract: An arrangement (100) for specifying the pressure (64), produced by a pump (30) driven by an electric motor (31), includes a processor (116) which derives a target pressure value (62, 118) from an internal torque value (114) and a loss torque (108). The arrangement (100) further derives (112) the internal torque value (114) from a motor current value (110) and a motor constant ke.

Abstract: An arrangement (100) for specifying the pressure (64), produced by a pump (30) driven by an electric motor (31), includes a processor (116) which derives a target pressure value (64, 118) from an internal torque value (114) and a loss torque (108). The arrangement (100) further derives (112) the internal torque value (114) from a motor current value (110) and a motor constant ke.