berg-khnc

Clamping systems workpiece clamping - KHNC

Three jaw wedge hook chuck with through hole

BERG power operated chucks type KHNC are designed for high speed, high capacity lathes subject to frequent jaw changes.

In conjunction with the specified recommended rotational speeds they stand out for their high clamping forces, as well as their compact design with low chuck height and short piston stroke.

Design features
BERG power operated chucks type KHNC are designed for high speed, high capacity lathes subject to frequent jaw changes. In conjunction with the specified recommended rotational speeds they stand out for their high clamping forces as well as their compact design with low chuck height and their short piston stroke.

The interface between the clamping drive and base jaw constitutes a locking system which can only be actuated by a positively guided key. This key can only be removed from the chuck once the base jaw is securely attached to the clamping drive. The key switch SSH is to
be provided on the machine side preventing the spindle from starting once the key is removed. This guarantees operating safety and reliable function at all times.

Jaw change is possible in any stroke position. KHNC power operated chucks are also designed for fitting top jaws of similar types. The DS seals seal the chamber between the jaw teeth and jaw guiding groove. Ensure that there is always a tooth space to allow engagement of the DS seal. When opened this point is identified by the dimension Q.

To close the chuck, bore protection covers SD are provided for use in conjunction with GB...D base jaws. Unlike the representation in the data sheet the chuck body construction sizes 315, 400 and 500 are externally reduced in weight. Power operated chucks type Z are intended for cylindrical flat flange spindles and design A for spindle heads as per DIN 55026.

Rotating piston connections types H and V facilitate mounting onto the machine. Piston connection S1 for smaller chuck sizes allows direct connection to the draw tube with maximum through hole diameter.