Mapal’s HighTorque Chuck (HTC) with narrow contour combines the benefits of hydraulic expansion with 3-degree back taper. This fast feed milling inserts feature is accomplished via additive manufacturing, which enables the clamping range to be positioned very close to the chuck tip for an optimum radial runout of less than 3 microns at the location bore and less than 5 microns at 2.5×D as well as high shape accuracy and good vibration damping. The damping in the system reduces microstructure cracking at the cutting edge, which in turn ensures longer tool life and less strain on the machine spindle. Furthermore, Mapal explains, the additive process eliminates the need for the soldered joint that has been a limiting factor until now. This chuck shares the benefits of the standard HTC, including thermal stability. Operating temperature ranges to 338°F (170°C), promoting additional process reliability.

With benefits for moldmaking as well as automotive and aerospace applications, rod peeling inserts this chuck is designed for all machining operations in contour-critical areas.

The chuck is available in clamping diameters of 6, 8, 10 and 12 mm for HSK-A63 and SK-40 interfaces. Intermediate sleeves enable additional diameter ranges to be covered. In addition, the chuck is optionally available with a dynamically-balanced HSK connection.

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