The SCHUNK ROTA NCR-A sealed 6-jaw pendulum compensation chuck has special seals at the jaw interface and the piston to keep the grease from being washed out and the clamping force from being gradually lost. Even in the case of low clamping forces, precise functioning of the chuck is ensured, and at the same time the seals ensure than an ingress of chips and dirt into the chuck body is avoided. As a result, process safety increases, and the maintenance intervals extend. This means that the lathe chuck doesn’t have to be lubricated or cleaned as often.