Accurate disk positioning performance. Excellent refining result and consistent stock quality. Special design with easy maintenance, and operation. Rotor disks hydraulically activated, disks auto adjusted if inlet pressure lower than set value. Disks auto back-off in the case of interrupted stock flow, insufficient cooling or power failure. Machine sizes available from 20''~40", different choice and design for capacity need. Various types and sizes of rotor disk for optimized defining results.