Before installing the chuck first, be sure to fit the chuck into the lock nut, and then lightly screw the lock nut with the chuck onto the shank, adapter or spindle. In addition, in order to obtain good performance, before installing the spring chuck, be sure to clean the positioning surface and cone surface of the threaded part of the spring chuck and lock nut.
During the installation of the chuck and lock nut, the chuck and lock nut must be tilted at a certain angle, and then lightly placed into the lock card slot of the lock nut.