What Are Helical Gear Boxes and What Are They Used For?
Helical gear boxes are mechanical components that are employed to convey power and decreased velocity in between a motor and a machine. The helical gears they use are cut at an angle (helix angle) and not straight across as is the case with the spur gears.
Due to such an angled design, the gears interact with each other in a more smooth and gradual manner. This forms helical gear boxes: