Under certain conditions traction machines with short axial length and relatively large diameter are required. If the space constraints do not allow for a conventional machine design with a low number of poles and a distributed winding, a machine with a higher number of poles and a tooth coil winding can be a possible solution. As a consequence also the lamination steel, the winding copper and the skewing of the machine have to be adapted. Taking account of the special properties of this type of machine a traction generator with short axial length and high power density was built.