263 Каталог PRAMET 2016 Инструментальная оснастка для металлорежущих станков Стр.262

Каталог PRAMET 2016 Инструментальная оснастка Стр. 262 0263 Lab2u

HYDRAULIC EXPANSION CHUCKS Modern machining processes place heavy demands on tool holding. Hydraulic expansion chucks provide excellent clamping characteristics combined with precise concentricity. Furthermore, they enable a simple and fast tool change. Turning the pressure screw generates sufficient pressure in the pressure chamber resulting in an elastic deformation of the clamping bush, providing power- ful tool clamping and precise concentricity. A safe and powerful fit is guaranteed. If reduction sleeves are applied that are able to hold varying tool diameters, the tool application may be extended without problem. If such sleeves are not applied, it is essential to observe the minimum clamping length Advantages precise tool clamping with a maximum 3 m deviation from concentricity transmission of high torque through (excellent clamping) optimised bush 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 hydraulic cushioning has vibration absorbing effect / Clamping standard tool shanks to DIN 6535 in hydraulic expansion chucks Direct clamping of tool preferred run-out < 0.003 mm Clamping of tool shank only with reduction bushes run-out < 0.005 mm Form HA 0 6 ... 32 mm Form HB 0 25 ... 32 mm Form HB 0 6 ... 20 mm Form HE 0 6 ... 32 mm 262