Timing 
Equipment – Timing gears, as the name implies, are used for various timing reasons. Also known as synchronous gears, they can be either spur or helical gears. They are generally found in automotive applications to regulate valve timing in engines.
Worm Equipment – A worm gear includes a worm and a worm wheel functioning with each other. The worm resembles a screw and may also be called a worm screw, as the worm wheel looks comparable to a spur equipment or helical equipment with hook helix position. This set is sometimes also called a worm drive. Worm gears will be the most compact kind of gear and so are often used in applications where space is limited.
Spur Equipment – Spur gears are the most common kind of gear. They are used to transmit motion between two parallel shafts and are known to be highly efficient and producing a lot of power. Spur gears are known by several other names including straight gears, straight-cut gears, spur wheels, and spur gearing. All of these have the same simple definition and can be utilized interchangeably.
Pump Gear – A pump gear may be the name intended for a equipment used in gear pumps. They contain both a driver and driven gear and can be either spur or helical gears. Not to be confused, the term gear pump identifies the entire pump, while pump gears identifies the gears just. Gear pumps are positive displacement pumps, which means they pump a continuous amount of fluid in each revolution. The volume of liquid in a revolution Ground Helical Gear Racks depends upon the geometry of the pump gears (i.electronic. number of teeth, diametrical pitch, etc.).
Spline – Splines are the ridges or tooth (exterior spline) on a drive shaft that mesh with an equal amount of like ridges or the teeth (internal spline) in a mating piece with the goal of transferring torque in one member to the additional. The most typical splines are parallel crucial splines, involute splines (carefully linked to involute gears but with shorter teeth, root to tip), and serrations. Splines can be made by shaping, hobbing or broaching.
Sprocket – Sprockets, or sprocket wheels, are toothed wheels whose teeth engage the links of chains or belts. Sprockets are distinguished from gears in that sprockets should never be meshed together straight. There are several different types of sprockets, which includes silent chain, roller, and ladder sprockets.
Pinion Equipment – A pinion may be the smaller sized of two meshed gears within an assembly. Pinions gears could be either spur or helical type gears, and become either the traveling or driven gear, depending on the application form. Pinion gears are used in many different types of gearing systems such as for example ring and pinion or rack and pinion systems.