A seal structure of a drive device is provided which includes a case in which a motor chamber for accommodating an electric motor and a gear chamber for accommodating a gear mechanism are located adjacent to each other, a partition that separates the motor chamber and the gear chamber, a bearing that supports a rotating shaft, a seal part that seals between the rotating shaft and the partition, a lubricating oil that lubricates the gear mechanism, and a coolant that cools the electric motor, and also includes a first bearing on the motor chamber side, a second bearing on the gear chamber side, a first seal part on the motor chamber side, a second seal part on the gear chamber side, and at least the second seal part of the first seal part and the second seal part is provided between the first bearing and the second bearing.

A rotor assembly for an electric machine, including a rotor core and a shaft, is connected to the rotor core for conjoint rotation, wherein a cooling channel arrangement is formed within the rotor assembly and includes a cooling channel, which extends within the shaft. The rotor assembly further includes a separation element which has a separation portion extending in the circumferential direction at an inner radius of the shaft, wherein the separation portion separates an interior of the shaft into a first shaft portion, in which the cooling channel extends, and into a second shaft portion, wherein the separation element includes a sealing device, which seals off the shaft portions with respect to one another.

A sealing assembly of an input shaft includes a support structure, a bearing assembly, and an input seal. The input seal including an input seal housing having a first portion and a second portion. The first portion is arranged adjacent the bearing assembly. At least one face plate anti-rotation pin is coupled to the input seal housing and positioned adjacent the input shaft. A face plate is positioned adjacent the second portion. The face plate is configured to directly contact the input shaft.

A seal device (3) for a rotating shaft (1). The seal device has a shaft seal (4) and a collecting device (5) for the contactless removal of leakage, that penetrates through the shaft seal (4), from the shaft (1). Further, an electric machine has a rotor shaft (1) that can be driven in rotation and a seal device (3) of the type for sealing the rotor shaft (1) and, therefore, also an inside space of the electric machine. Additionally, a drive device for the electrical driving of a motor vehicle that has an electric machine of the type for the provision of a drive power of the drive device.

A seal device (3) for a rotating shaft (1). The seal device has a shaft seal (4), a shaft grounding connection (6) and a holding feature (9) for holding the shaft seal (4) and the shaft grounding connection (6). The holding feature (9) has at least one opening (10), between the shaft seal (4) and the shaft grounding connection (6), for clearing particles away from the shaft seal (4) and the shaft grounding connection (6). An electric machine with a rotor shaft (1) that can be driven in rotation and with a seal device (3) of the above type for sealing the rotor shaft (1) and, therefore, also sealing an inside space of the electric machine. Furthermore, a drive unit for electrically driving a motor vehicle, including an electric machine of the above type for providing drive power of the drive unit.

A non-contact overhead waterproof structure for high-speed motors includes a motor main body, a movable impeller, a fixed impeller, a motor shaft, a bearing and an oil seal layer. The movable impeller, the fixed impeller, the motor shaft and the bearing are provided inside the motor main body. The movable impeller, the fixed impeller and the bearing are sleeved on the motor shaft in sequence from top to bottom. The motor shaft is able to rotate along its axis to drive the movable impeller to rotate along the axis of the motor shaft. The fixed impeller is fixedly provided in the motor main body. The oil seal layer is provided between the movable impeller and the bearing, and is rotatably sleeved outside the motor shaft and sealedly provided between the motor shaft and the fixed impeller.

A non-contact overhead waterproof structure for high-speed motors includes a motor main body, a movable impeller, a fixed impeller, a motor shaft, a bearing and an oil seal layer. The movable impeller, the fixed impeller, the motor shaft and the bearing are provided inside the motor main body. The movable impeller, the fixed impeller and the bearing are sleeved on the motor shaft in sequence from top to bottom. The motor shaft is able to rotate along its axis to drive the movable impeller to rotate along the axis of the motor shaft. The fixed impeller is fixedly provided in the motor main body. The oil seal layer is provided between the movable impeller and the bearing, and is rotatably sleeved outside the motor shaft and sealedly provided between the motor shaft and the fixed impeller.

A seal ring assembly for a rotor shaft includes a seal casing defining a radially inwardly directed channel. The seal ring is disposed in the radially inwardly directed channel of the seal casing. The seal ring is resiliently joined about the shaft to form a seal, and the seal ring comprises an electrically insulating or dissipative material or a non-metallic material.

A seal ring assembly for a rotor shaft includes a seal casing defining a radially inwardly directed channel. The seal ring is disposed in the radially inwardly directed channel of the seal casing. The seal ring is resiliently joined about the shaft to form a seal, and the seal ring comprises an electrically insulating or dissipative material or a non-metallic material.

A sealed induction motor for a chiller assembly is provided. The induction motor includes a stator, a rotor, and a shaft with a first end and a second end. The rotor and the shaft are configured to rotate relative to the stator. The induction motor further includes a first magnetic bearing assembly located proximate the first end of the shaft and a second magnetic bearing assembly located proximate the second end of the shaft. The first and the second magnetic bearing assemblies are configured to support the shaft. The shaft is coupled to a centrifugal compressor using a direct drive connection.