Timing Gear – Timing gears, since the name implies, are used for various timing purposes. Also called synchronous gears, they could be either spur or helical gears. They are often found in automotive applications to control valve timing in engines.
Worm Equipment – A worm gear consists of a worm and a worm wheel operating with each other. The worm resembles a screw and is Ground Helical Gear Racks sometimes known as a worm screw, as the worm wheel appears comparable to a spur equipment or helical equipment with hook helix position. This set is sometimes also known as a worm drive. Worm gears are the most compact kind of gear and so are often found in applications where space is bound.
Spur Gear – Spur gears are the most typical type of gear. They are used to transmit motion between two parallel shafts and are known for being highly efficient and creating a lot of power. Spur gears are known by a number of other names including directly gears, straight-cut gears, spur tires, and spur gearing. All of these have the same basic definition and can be used interchangeably.
Pump Gear – A pump gear may be the name designed for a equipment used in equipment pumps. They consist of both a driver and driven gear and can become either spur or helical gears. Never to be confused, the word gear pump identifies the whole pump, while pump gears refers to the gears only. Gear pumps are positive displacement pumps, meaning they pump a continuous amount of fluid in each revolution. The volume of fluid in a revolution depends upon the geometry of the pump gears (i.electronic. number of tooth, diametrical pitch, etc.).
Spline – Splines will be the ridges or tooth (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 goal of transferring torque in one member to the additional. The most typical splines are parallel essential splines, involute splines (carefully linked to involute gears but with shorter tooth, root to tip), and serrations. Splines could be produced by shaping, hobbing or broaching.
Sprocket – Sprockets, or sprocket wheels, are toothed wheels whose tooth engage the links of chains or belts. Sprockets are distinguished from gears in that sprockets should never be meshed together directly. There are several different types of sprockets, which includes silent chain, roller, and ladder sprockets.
Pinion Equipment – A pinion is the smaller of two meshed gears in an assembly. Pinions gears can be either spur or helical type gears, and become either the driving or driven gear, depending on the application. Pinion gears are used in many types of gearing systems 
such as for example ring and pinion or rack and pinion systems.