Spur gear transmission

A spur gear transmission, comprising:

• at least two intermeshing spur gears having a plurality of teeth, the plurality of teeth of each in a meshing engagement with one another, and rotatable via a respective axis of rotation;
• an enveloping wall surrounding the at least two intermeshing spur gears in a circumferential direction and in a direction of the respective axis of rotation, the enveloping wall having an inner contour adapted to an outer diameter of the at least two intermeshing spur gears thereby forming two annular gaps between the enveloping wall and the at least two intermeshing spur gears merging into each other, at least one of the two annular gaps is substantially concentric to the respective axis of rotation, the enveloping wall being formed by a two-part housing which is closed along a parting line and includes an upper part and a lower part, the parting line extends at least partially within a plane in which at least one of the respective axis of rotation extending, at least one of the at least upper part and lower part of the enveloping wall are a welded construction.