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. 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 DIN 69871 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 clamping system • high speed compatibility (no centrifugal forces from clamping segments) MA S 403 BT • 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 • hydraulic cushioning has vibration absorbing effect DIN 2080 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