Timing Equipment – Timing gears, as the name implies, are used for various timing purposes. Also called synchronous gears, they could be either spur or helical gears. They are generally found in automotive applications to control valve timing in engines.
Worm Gear – A worm gear consists of a worm and a worm wheel operating together. The worm resembles a screw and is sometimes called a worm screw, as the worm wheel looks similar to a spur gear or helical equipment with a slight helix position. This set may also be also called a worm drive. Worm gears will be the most compact type of gear and so are often used in applications where space is bound.
Spur Gear – Spur gears are the most common type of gear. They are accustomed to transmit movement between two parallel shafts and so are known to be 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. These all have the same Ground Helical Gear Racks fundamental definition and can be utilized interchangeably.
Pump Equipment – A pump gear is the name for a gear used in equipment pumps. They consist of both a driver and driven equipment and can be either spur or helical gears. Not to be confused, the word gear pump identifies the whole pump, while pump gears refers to the gears just. Gear pumps are positive displacement pumps, meaning they pump a continuous amount of liquid in each revolution. The quantity of liquid in a revolution depends upon the geometry of the pump gears (i.electronic. number of teeth, diametrical pitch, etc.).
Spline – Splines will be the ridges or the teeth (exterior spline) on a drive shaft that mesh with an equal number of like ridges or tooth (internal spline) in a mating piece with the goal of transferring torque from 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 could 
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 should never be meshed together directly. There are several various kinds of sprockets, which includes silent chain, roller, and ladder sprockets.
Pinion Gear – A pinion is the smaller of two meshed gears within an assembly. Pinions gears can be either spur or helical type gears, and be either the traveling or driven gear, based on the application form. Pinion gears are used in many types of gearing systems such as ring and pinion or rack and pinion systems.