The electrification of agricultural vehicles is often discussed. Several prototypes, which use electric machines as a traction drive, are known. However, design of an electric motor is a particular challenge because of the special characteristics of the drive cycle of the agricultural tractor. High torque at low speed and low torque at high speed are required. This results in a wide speed range, which represents a particular challenge for the machine design. This paper describes the possibilities to realize the wide speed range and its influence on the design of electric machines.