Adapter assembly

An adapter assembly for connecting a transmission unit to a motor unit, comprising

• an adapter housing,
• at least one bearing disposed in the adapter housing,
• an adapter shaft which has a shaft axis and is rotatably supported in the bearing,
• at least one lubricant chamber which extends annularly around the adapter shaft and holds a lubricant, wherein the lubricant chamber is connected to the at least one bearing and is configured to supply the lubricant from the lubricant chamber to the at least one bearing, and
• a lubricant seal surrounding the adapter shaft on the motor side of the at least one bearing and sealing the lubricant chamber relative to the motor side of the adapter assembly, and
• at least one first channel configured to supply the lubricant from an environment of the adapter assembly to the at least one lubricant chamber,
• wherein the at least one lubricant chamber is connected to the transmission side of the adapter assembly by way of a transmission-side opening in the adapter assembly, said transmission-side opening providing access to the adapter shaft on the transmission side of the adapter assembly, or the adapter assembly comprises a second channel configured to drain the lubricant from the lubricant chamber into the environment of the adapter assembly.

A drive group comprising

• a transmission unit, and
• an adapter assembly connected to the transmission unit,
• wherein the adapter assembly comprises
• an adapter housing,
• at least one bearing disposed in the adapter housing,
• an adapter shaft which has a shaft axis and is rotatably supported in the bearing,
• at least one lubricant chamber which extends annularly around the adapter shaft and holds a lubricant, wherein the lubricant chamber is connected to the at least one bearing and is configured to supply the lubricant from the lubricant chamber to the at least one bearing, and
• a lubricant seal surrounding the adapter shaft on the motor side of the at least one bearing and sealing the lubricant chamber relative to the motor side of the adapter assembly, and
• at least one first channel configured to supply the lubricant from an environment of the adapter assembly to the at least one lubricant chamber,
• wherein the at least one lubricant chamber is connected to the transmission side of the adapter assembly by way of a transmission-side opening in the adapter assembly, said transmission-side opening providing access to the adapter shaft on the transmission side of the adapter assembly, or the adapter assembly comprises a second channel configured to drain the lubricant from the lubricant chamber into the environment of the adapter assembly.

A modular system for constructing an adapter assembly, comprising

• a plurality of transmission-side adapters connectable to different transmission units, with each transmission-side adapter having a transmission-side bearing,
• a plurality of motor-side adapters connectable to at least one of the transmission-side adapters and to different motor units, with each motor-side adapter having a motor-side bearing, and
• adapter shafts rotatably supported in the respective transmission-side bearing and motor-side bearings,
• wherein the or each adapter assembly comprises
• at least one lubricant chamber which extends annularly around the adapter shaft and holds a lubricant, wherein the lubricant chamber is connected to the at least one bearing and is configured to supply the lubricant from the lubricant chamber to the at least one bearing, and
• a lubricant seal surrounding the adapter shaft on the motor side of the at least one bearing and sealing the lubricant chamber relative to the motor side of the adapter assembly, and
• at least one first channel configured to supply the lubricant from an environment of the adapter assembly to the at least one lubricant chamber,
• wherein the at least one lubricant chamber is connected to the transmission side of the adapter assembly by way of a transmission-side opening in the adapter assembly, said transmission-side opening providing access to the adapter shaft on the transmission side of the adapter assembly, or the adapter assembly comprises a second channel configured to drain the lubricant from the lubricant chamber into the environment of the adapter assembly.

A method for manufacturing a lubricant circuit in a drive group, which comprises a transmission unit and an adapter assembly connected to the transmission unit, the method comprising:

• forming a lubricant chamber extending annularly around an adapter shaft of the adapter assembly and configured to hold a lubricant, wherein the lubricant chamber is connected to at least one bearing, in which an adapter shaft is rotatably supported, and wherein the lubricant chamber is configured to supply the lubricant from the lubricant chamber to the at least one bearing;
• arranging a lubricant seal, which surrounds the adapter shaft, on a motor side of the bearing for sealing the lubricant chamber relative to the motor side of the adapter assembly;
• supplying the lubricant to the lubricant chamber from an environment of the adapter assembly by way of at least one first channel;
• forming as a lubricant drain a transmission-side opening in the adapter assembly, which provides access to the adapter shaft on the transmission side of the adapter assembly, or a second channel for draining the lubricant from the lubricant chamber to the transmission side of the adapter assembly, and
• connecting the lubricant drain and the lubricant supply by way of a lubricant line.