A vertical gear hobbing machine is a special type of gear hobbing machine in which the tool is located vertically above the workpiece. In contrast, a horizontal gear hobbing machine has the tool horizontal to the machining surface. A vertical gear hobbing machine usually offers better accessibility to the workpiece and allows more complex geometries to be machined with greater precision and accuracy. In addition, cooling lubrication can be more easily provided on a vertical machine, which can extend tool life and improve machining quality. Vertical gear milling machines are often used in the manufacture of complex gears, bearing housings, shafts and other components.