The BMU Series features a compact, high-power and high-efficiency brushless DC motor and is combined with an easy to use, easy to set speed controller. The entire motor structure features our latest brushless DC motor technology and has been innovated in pursuit of the optimal performance. The BMU Series has a maximum speed of 4000 r/min*. Speed ratio of 1:50* (80 to 4000 r/min*) is achieved. Round Shaft and Geared models available.