The name of helical gear is mainly different from spur gear. As the name suggests, it is "gear with inclined teeth". The tooth surface of this kind of gear is not parallel to the axial direction, but has a certain included angle. It is precisely because of this included angle that helical gear has a variety of characteristics different from spur gear.
In terms of performance improvement, helical gear has greater coincidence degree than spur gear (increases with the increase of gear width and helix angle), which brings stronger bearing capacity to the vehicle and greater ultimate torque that can be loaded. Therefore, it has obvious advantages in the field of high-speed and heavy load.
