Ball Nuts are divided into single nut and double nut. Generally, the bearing load of single nut is not as large as that of double nut, and the service cycle is not as long as that of double nut. In the future, maintenance and maintenance are not as convenient as double nut. The installation dimensions of the single nut ball screw and the double nut ball screw are exactly the same except for the length (the length of the double nut is twice that of the single nut).