With the specially designed S-gear gearbox, we can control the surface cleanliness produced by the machine. There are five different (preset) axial feed options that provide different surface cleanliness depending on the cutting geometry of the cutting tips you use. The unique gearbox even allows you to adjust the cutting feed between preset positions when another surface treatment is required. The gearbox also allows the cutting tool to move in both directions. Since the gearbox is driven by the rotation of the machine, the surface will be the same regardless of the rotation speed of the machine.