internal gear precision slewing drive adapted to 90° gearbox is used under the precision turntable of automation equipment, the planetary gearbox and servo motor can be mounted inside the base to save external space. The base height can not be too high, the servo motor can not be directly connected to the planetary gearbox, choose the right-angle gearbox to make the installation direction of the servo motor into the horizontal direction. This design makes the customer’s equipment overall beautiful, reasonable layout, easy installation and maintenance.