Vloeiboren BIS Specials

WELDON-Holders DIN1835B Type L L1 d D Article number Ø16 ER25 117 63 2 – 16 65 18ER25WD16 Ø20 ER25 117 63 2 – 16 65 18ER25WD20 Ø25 ER32 134 72 2 – 20 80 18ER32WD25 CNC-Holders DIN 69871 A SK Type L L1 d D Article number 40 ER25 196 98 2 – 16 59 18ER25CN40 40 ER32 173 105 2 – 20 69 18ER32CN40 MAS-BT-Holders BT Type L L1 d D Article number 40 ER40 185 90 3 – 26 85 18ER32BT40 TOOL HOLDERS During the frictiondrilling process, the material glows light-red and the Drabus frictiondrill itself should glow dark-red. So, the tool holder has two functions. The first function is to clamp the Drabus frictiondrill. The Drabus frictiondrill does not centre it- self. From the moment that the Drabus frictiondrill makes contact with the cold workpiece surface, it has the tendency to walk sideways. So, the position of the Drabus frictiondrill should be determined by the rigidity of the machine and the precision of the rotation of the tool holder and the machine. The second function of the tool holder is to discharge the generated friction heat. This is necessary to prevent the friction heat from warming up the spindle and the bearings of the drilling machine. The outside cooling is a fixed part of the tool holder and is able to discharge the heat in a continual or interrupted process. ISO-Holders DIN2080 SK Type L L1 d D Article number 30 ER25 148 80 2 – 16 75 18ER25SK30 30 ER32 149 80 2 – 20 85 18ER32SK30 40 ER32 188 95 2 – 20 85 18ER32SK40 CM-holders CM Type L L1 d D Article number 2 ER25 140 60 2-16 65 18ER25MT02 3 ER32 172 72 2-20 80 18ER32MT03 4 ER32 210 86 2-20 110 18ER32MT04 4 ER40 208 80 3-26 110 18ER40MT04 www.bisspecials.com

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