Chuck is usually installed on lathe, cylindrical grinder and internal grinder, and can also be used on milling machines and drilling machines with various indexing devices. The driving center has a special tip and is uniquely designed for various machine tools. Driving centers for turning, grinding and gear machining can be used in various occasions. The center adopts patented dynamic balance and automatic compensation system, which can still be processed even if the tip of the tool points at the blank parts or inclined planes. There are three ways to connect with the machine tool: Morse taper handle, flange connection and soft claw clamping, which are convenient and reliable to install and use. In finishing and grinding series, the fixed connection of the center center can accurately locate the axial dimension. With different specifications of driving paddles, shaft sleeve parts with an outer diameter of 5-400 mm or even larger can be processed.