Air balance outer circle polishing machine

An air balance outer circle polishing machine relates to the technical field of polishing equipment and comprises a workbench, a clamping device arranged in the axial direction of a workpiece is arranged on the workbench, a grinding and polishing workbench is arranged on the workbench in the axial direction of the workpiece in a sliding mode, and a grinding assembly and a polishing assembly are arranged on the grinding and polishing workbench and located on the two sides of the workpiece in the radial direction of the workpiece. The grinding assembly and the polishing assembly are independently and slidably arranged in the radial direction of the workpiece. The polishing device solves the problems that when a polishing device in the traditional technology is used for polishing a workpiece, a feeding mechanism cannot feed stably due to the influence of polishing chippings in the feeding process, and large noise is generated; and when the length of the workpiece is large, the workpiece is prone to large vibrati