Compared with manual chucks, pneumatic chucks can automatically center and clamp the workpiece with a single click of a button, and the clamping force is stable and adjustable. In addition to improving work efficiency, it can also achieve one person operating multiple CNC machines, greatly reducing human resource costs, while also reducing the investment in fixed equipment, widely applicable to batch mechanical processing enterprises.

According to the number of chucks, it can be divided into two jaw chucks, three jaw chucks, four jaw chucks, six jaw chucks, and special chucks. From the use of power can be divided into: manual chuck, pneumatic chuck, hydraulic chuck, electric chuck, and mechanical chuck. Structurally, it can be divided into hollow chucks and medium solid chucks.