Power chuck tool holder is a commonly used tool holder in cutting processing. It is used for clamping straight shank tools such as milling cutters and reamers. The clamping deformation of the circlip is small. The clamped tool holder has a diameter tolerance of h6, and its clamping The force is relatively large, and the tightening accuracy is better. Different collets can be replaced to clamp milling cutters and reamers with different shank diameters. However, in the processing process, the front diameter of the powerful tool holder is larger than that of the collet chuck. Easy to interfere. The powerful chuck holder is suitable for clamping milling cutters, and the clamping force is more uniform in the clamping length, and can withstand larger radial forces. For end milling, high-quality sidelock chucks or ER collet chucks may be the best choice. For powerful tool holders, it is suitable for traditional milling machines for heavy cutting and precision cutting.