Каталог оснастка Dormer Pramet 2016 - страница 263

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HYDRAULIC EXPANSION CHUCKS Modern machining processes place heavy demands ful tool clamping and precise concentricity. A safe and on tool holding. Hydraulic expansion chucks provide powerful fit is guaranteed. DIN 69871 excellent clamping characteristics combined with pre- If reduction sleeves are applied that are able to cise concentricity. Furthermore, they enable a simple hold varying tool diameters, the tool application may and fast tool change. be extended without problem. If such sleeves are not Turning the pressure screw generates sufficient pres- applied, it is essential to observe the minimum clam- sure in the pressure chamber resulting in an elastic ping length! deformation of the clamping bush, providing power- ISO 60 Advantages • precise tool clamping with a maximum 3 μm deviation from concentricity • transmission of high torque through (excellent clamping) optimised bush MAS 403 BT clamping system • high speed compatibility (no centrifugal forces from clamping segments) • precise concentricity, therefore excellent surface quality and dimensional accuracy of the workpiece • rapid tool change thanks to simple operation of the clamping screw • optimal tool life DIN 2080 • hydraulic cushioning has vibration absorbing effect HSK-A VDI MORSE Clamping standard tool shanks to DIN 6535 in hydraulic expansion chucks Form HA Ø 6 ... 32 mm Form HB Ø 6 ... 20 mm Direct clamping of tool preferred run-out ≤ 0.003 mm Form HB Ø 25 ... 32 mm Form HE Ø 6 ... 32 mm Clamping of tool shank only with reduction bushes run-out ≤ 0.005 mm 262