SK722 CNC Tap Grinding Machine SK722 CNC Tap Grinding Machine is chiefly used in the tool manufacturing industry for relieving the threads of various taps, especially of straight fluted taps. Single-rib and multi-rib methods can be used on this machine. The tap threads can be used on this machine. The tap threads can be directly ground or relieved on the hardened blanks with no any thread. Equipped with 4 CNC axes, the machine promises the pitch change, the automatic dressing feed, an easy operation and a convenient programming by the means of synchronism and interpolation of the four axes, which is very suitable for tap batch production. The bed has excellent excellent rigidity resulted from the fact that it is made of high quality cast iron. Full-closed housing and quality oil mist collector are also employed on the machine.