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In the past, static brake tests involved either pneumatic or hydraulic lever arm concepts, which allowed high torque loads on main and parking brakes in standstill. However modern and realistic test procedures like the analysis in pull away scenarios (stick - slip effect) or the so-called creep and groan test require a full rotational degree of freedom for the brake in the test cell. In order to provide this functionality an additional motor and gearbox is usually added to the brake test cell. Providing high gear ratio, this motor allows high torque at low speed for multiple rotations of the brake. Because of the speed limit, this motor-gearbox combination cannot be used for regular test procedures. Another limiting disadvantage of this concept is the usage of a coupling device to add or remove this motor from the shaft. This technique does not allow realistic test profiles.