Fulfill the preset depth, auto stop and return. It is the best tool for preventing break of screw tap.
The machine can auto sense the excessive load between the screw tap and screw hole and return to prevent break of screw tap. Weather for a stop hole or through hole, it can fulfill the preset the depth then auto return and exit to improve the work efficiency. The depth of screw tap can be freely adjusted.
The machine is especially fit for application in operation of glass screw, and through screw hole of Al-Mg alloy NB shell.
Fitted with special transformer SBT-50