Milling chuck offers 5-6 times greater gripping power

The MC ‘roll type’ milling chuck is suited to high volume, high precision, heavy duty milling as encountered in the aerospace industry where deep and heavy milling of super alloys and titanium work piece materials. Gewefa claims the gripping torque on the tool shank created by the radial groove system is 5-6 times greater than that achievable by most collet chucks. At the heart of the MC chuck design is its patented radial groove gripping system that offers unsurpassed torque when uniformly securing the tool shank along its entire length, producing smooth and powerful milling without vibration or the risk of the tool slipping. When tightened, nut/needle roller bearings uniformly collapse the radial groove sleeves around the tool shank to create the uniform grip characteristics. Oil on the shank can also be evacuated as it drains along the grooves. In addition, the thick wall construction of the tool holder ensures more rigidity in the tool and eliminates vibration or tool ‘chatter’, contributing to greater cutting precision - 0.0002” TIR - and prolonging the insert life. The chucks can be supplied with coolant through the spindle or through the flange and are available in CAT/ANSI, BT, DIN and HSK formats in 20, 25 and 32 diameters. Reduction sleeves are also available that fit into the cutter and permit other diameter tool shanks to be seecurely gripped.