Schunk has expanded its product range with a sealed 6-jaw pendulum compensation chuck for clamping deformation-sensitive workpieces. The special seals located on the serrated jaw interface and pistons of the Schunk Rota NCR-A prevent grease from being flushed out and prevent the clamping force from being gradually lost.
Precise chuck function is ensured, even at low clamping forces. In addition, the seal prevents chips or dirt from ingress into the chuck body. This increases process reliability and lengthens maintenance intervals, translating into less frequent lubrication and cleaning of the lathe chuck. The Rota NCR-A consists of a central chuck piston carrying three inner pendulums aligned at 120°. Each pendulum is connected to two base jaws. This ensures workpiece centring between six contact points.