Renk Aktiengesellschaft

Dietmar Sterns

Jürgen Weigand

Oliver Kraus

Gear unit with a gear unit housing, a drive-side and an output-side shaft and a gear ratio stage. The gear unit housing has a toothing space in which there are intermeshing toothed wheels and a bearing space separated from the toothing space. The bearing space in which bearing lubricating oil can be collected is operated under atmospheric pressure. The bearing lubricating oil is guided from the bearing space to an oil collecting receptacle external to the gear unit. The toothing lubricating oil collected in the toothing space is fed to the oil collecting receptacle to be at least partially separated from the bearing lubricating oil. In partial vacuum operation the toothing lubricating oil is conveyed from the toothing space into the oil collecting via a delivery pump, and in atmospheric operation, the toothing lubricating oil is conveyed from the toothing space into the oil collecting receptacle via a check valve.

Gear unit

The transmission for a drive arrangement of a driven machine with an oil supply system has at least one oil collecting receptacle for supplying components of the transmission with oil for lubrication and/or cooling. The oil is supplied from the respective oil collecting receptacle via an oil supply line and an oil supply pump and is returned to the respective oil collecting receptacle subsequently via an oil return line. A vacuum pump is associated with at least one oil collecting receptacle for supplying components of the transmission with oil, and the respective oil collecting receptacle can be evacuated or partially evacuated via the vacuum pump and at least one partial interior of the transmission can be evacuated or partially evacuated indirectly via the oil collecting receptacle via the vacuum pump accompanied by the generation of a defined negative pressure.

Growing community of inventors

Kissing, Germany

Dietmar Sterns