The BTC-1 used a 35 taper spindle nose with a pull stud. The internal spring stack up has a force of 2100 pounds. The BOSS machines had either a Universal Quick Switch 30 or the Erickson QC-30. The Erickson had a 1/2 X 13 tapped hole in the top. It would accept a Kurt power draw bar which is a air driven butterfly type air impact wrench with a draw bar for quickly swapping out a tool holder.
George |