Abstract
The first characteristic of the Major Dream Holder is the dampening mechanism to absorb the micro vibration. Thus, the cutting condition can be increased and the cutter life will be expanded. The second characteristic is the front chucking mechanism of the taper collet chuck with the TiN bearing nut. When tightening the nut, between the nut and the upper surface of the TiN bearing is sliding and between the lower surface of the TiN bearing and the collet is not sliding, therefore the TiN bearing is pushing the collet straight down to the taper hole of the chuck. Thus, the run-out accuracy and the gripping torque are improved substantially.