Electric eddy speed reducer rotor disc

The utility model relates to an electric eddy speed reducer rotor disc, belonging to the technical field of the electric eddy speed reducer for mobiles, which consists of an integral joint face, a large side, a small side, and reinforcing bars. The utility model is mainly characterized in that at least two radiators are provided in equal distance between the two adjacent reinforcing bars inside of the opposed faces of the large side and the opposed face of the small side. In virtue of the radiator provided, the utility model increases heat radiation area and improves heat dispersion property, based on the reinforcing bar having heat radiation function. The rotor disk can serve as a part of the electric eddy speed reducer and the temperature of the rotor disk cannot exceed 460 degrees under work for a long time; the utility model improves use safety and can be applied to all kinds of the electric eddy speed reducers.