Can achieve a high reduction ratio of 1:87 and more than 90% of the high efficiency of single-stage transmission, if the use of multi-stage transmission, the reduction ratio is greater.The deceleration ratio of the first stage transmission is 9~87, the deceleration ratio of the double stage transmission is 121 ~ 5133, and the multi-stage combination can reach tens of thousands. Moreover, the meshing system of the needles and teeth is sleeve rolling friction, and the meshing surface has no relative sliding, so the first-stage deceleration efficiency reaches 94%.Compact structure small size due to the use of planetary transmission principle, the input shaft and output shaft in the same axis line, so that its model to obtain as small as possible size.Smooth operation and low noise cycloidal pin teeth have more meshing teeth, large overlap coefficient and the mechanism of balancing parts, so that the vibration and noise are limited to a minimum.At the same time in the operation of the contact of the number of teeth, large degree of coincidence, smooth operation, overload capacity, low vibration and noise, all kinds of specifications of the machine noise is small.Reliable use, long life because the main parts are made of bearing steel material, quenching treatment (HRC58 ~ 62) to obtain high strength, and part of the transmission contact using rolling friction, so long life.Because the main parts are made of bearing steel quenching treatment (HRC58-62), and then fine grinding, and cycloid teeth and needle gear sleeve meshing transfer to the needle teeth to form rolling friction pair, friction coefficient is small, so that the meshing area has no relative sliding, minimal wear, so durable.Reasonable design, convenient maintenance, easy to decompose and install, the least number of parts and simple lubrication, so that the cycloid reducer by the user's trust.Compared with other reducers with the same power, the weight and volume are more than 1/3 smaller. Because it is a planetary transmission, the input shaft and the output shaft are on the same axis, so as to get the smallest size possible.