Spur gear’s teeth are parallel to the axial direction, and it is the most widely used
gear between two parallel axes; its shape is cylindrical, and the teeth of the two gears
are meshing with each other at the outer edge; its teeth are arranged in parallel with
the shaft centerline.

Features of spur gears:
1. It is easiest to manufacture
2. The axial force (axial thrust) won’t be split
3. Available to obtain high-precision products
4. The most widely used gear

Application of spur gears:
Be applied to general power transmission