Spur gears are a type of planetary gearbox cylindrical equipment, with shafts that are parallel and coplanar, and the teeth that are straight and oriented parallel to the shafts. They’re arguably the easiest and most common kind of gear – simple to manufacture and ideal for a wide selection of applications.
One’s teeth of a spur gear have an involute profile and mesh one tooth at a time. The involute form means that spur gears only produce radial forces (no axial forces), however the approach to tooth meshing causes high pressure on the gear tooth and high noise production. Due to this, spur gears are typically used for lower quickness applications, although they can be utilized at nearly every speed.