A power transmission device includes a motor including a rotor having a first axial side, a second axial side opposite the first axial side, a permanent magnet embedded therein and a stator, and configured to generate a rotational force. An encoder RLL-modulates the plurality of types of pseudo-random data streams to create a modulated code stream including a minimum of DC components. The hardness or softness of the products may be varied by varying the relative amounts of talc, fiberglass, and titanium complex used therein. In addition, the invention provides for a cartridge assembly including a cutting insert that can be indexable to at least two cutting edges, thereby providing cost savings as compared to conventional cutter systems that use cutter blades that required to be entirely scraped when worn or broken. This configuration of the terminal receiving holes, including the guiding hole, has the advantage of facilitating beam inspection of the terminal through a beam emitter. PLC computer SCADA software operates the generators.