Timing Gear – Timing gears, because the name implies, are utilized for various timing reasons. Also known as synchronous gears, they can be either spur or helical gears. They are generally used in automotive applications to regulate valve timing in engines.
Worm Gear – A worm 
gear contains a worm and a worm wheel functioning together. The worm resembles a screw and is sometimes called a worm screw, as the worm wheel appears comparable to a spur equipment or helical equipment with a slight helix angle. This set is sometimes also called a worm drive. Worm gears will be the most compact type of gear and so are often found in applications where space is bound.
Spur Equipment – Spur gears are the most typical type of gear. They are accustomed to transmit motion between two parallel shafts and so are known for being highly efficient and producing a whole lot of power. Spur gears are known by quite a few other names including directly gears, straight-cut gears, spur wheels, and spur gearing. These all have the same fundamental definition and can be utilized interchangeably.
Pump Gear – A pump gear is the name meant for a equipment used in gear pumps. They contain both a driver and powered gear and can end up being either spur or helical gears. Not to be confused, the term gear pump refers to the entire pump, while pump gears refers to the gears only. Gear pumps are positive displacement pumps, meaning they pump a constant amount of liquid in each revolution. The volume of fluid in a revolution depends upon the geometry of the pump gears (i.e. number of tooth, diametrical pitch, etc.).
Spline – Splines are the ridges or the teeth (external spline) on a drive shaft that mesh with the same amount of like ridges or tooth (internal spline) in a mating piece with the purpose of transferring torque in one member to the additional. The most common splines are parallel crucial splines, involute splines (carefully related to involute gears but with shorter tooth, root to tip), and serrations. Splines can be made by shaping, hobbing or broaching.
Sprocket – Sprockets, or sprocket wheels, are toothed tires whose teeth engage the links of chains or belts. Sprockets are distinguished from gears for the reason that sprockets are never meshed together straight. There are several Ground Helical Gear Racks different types of sprockets, including silent chain, roller, and ladder sprockets.
Pinion Gear – A pinion may be the smaller of two meshed gears in an assembly. Pinions gears can be either spur or helical type gears, and be either the traveling or driven gear, based on the application. Pinion gears are used in many different types of gearing systems such as for example band and pinion or rack and pinion systems.