SMW Power Chuck Made for Heavy-Duty Machining

SMW’s HFKS-2G Power Chuck delivers twice the grip force than standard 3-Jaw chucks.


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SMW Autoblok’s HFKS-2G is a weight-optimized power chuck with flats and large through hole for minimizing inertia, maximizing part accessibility, and saving wear and tear on the spindle. The company says it is well-suited for high-volume lathe and mill-turn applications, as well as heavy-duty precision machining of easily deformed workpieces. It features flats on the chuck body and lighter weight, giving shorter tools closer access to workpieces, thus providing added parts precision and cost efficiency.

The machine has a wedge-hook mechanism combined with multi-jaw guide, which multiplies the points of contact and provides added surface connection and stability. According to the company, this specially designed guidance system features inclined geometry that locks the master jaw mechanically after clamping against the chuck body, reducing jaw movement.

The integrated, centrifugal-force compensation is said to enable significantly higher speeds and delivers double the grip force at maximum rpm compared to other 3-jaw chucks. Direct lubrication channels and grease reservoirs integrated in the jaw guideways are designed to ensure constant clamp force and improved accuracy, even in harsh machining environments. The specially designed lubrication system also minimizes downtime and reduces maintenance costs. The chuck body and internal parts are case hardened for increased chuck life and high rigidity, precision and durability. The chuck accepts inch-serrated top jaws and is available in sizes from 165 to 320 mm.


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