Swiss company Strausak AG, which makes CNC grinding machines for manufacturing and re-sharpening solid-carbide tools, wanted to offer customers the option of automating the loading and unloading of workpieces into and out of its U-Grind machines. However, to achieve the necessary high level of tool accuracy, an HSK 50 hydraulic expansion chuck with a diameter tolerance of only a few hundredths of a mm has to be used, rather than a conventional collet with 'automation-friendly' open tolerances.
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