Hydraulic Expansion Toolholder Suited for Axial Operations

Schunk’s Tendo Slim 4ax hydraulic expansion toolholder is designed for axial operations and applications that require milling close to interfering contours, countersinking and reaming in five-axis centers, such as in the die and mold industry.

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Schunk’s Tendo Slim 4ax hydraulic expansion toolholder is designed for axial operations and applications that require milling close to interfering contours, countersinking and reaming in five-axis centers, such as in the die and mold industry. It makes it possible to combine the complete outside geometry of heat-shrinking mountings with the company’s hydraulic expansion technology.

According to the company, the toolholder’s design reduces peak cutting amplitude of the force progression in Y direction, resulting in decreased tool deflection. By reducing the load of the cross cutter and the cutting edge, longer service life can be achieved.

Unlike heat-shrinking toolholders, this device has a permanently high runout accuracy of less than 0.003 mm at an unclamped length of 2.5×D and a balance grade of G 2.5 at 25,000 rpm.