What are the 7 Types of Gears?

Gears can be divided into seven common types according to their structure and application, namely: spur gears, helical gears, herringbone gears, internal gears, bevel gears, worm gears, and planetary gears.

Spur gears have a simple structure and are easy to manufacture, making them suitable for low-speed transmissions.
Helical gears have smooth meshing and low noise, and are often used in high-speed equipment.
Herringbone gears combine the advantages of spur and helical gears, have strong load-bearing capacity, and are suitable for heavy-duty transmissions.
Internal gears are used in conjunction with external gears and are commonly found in planetary reduction mechanisms.
Bevel gears are used for transmission between intersecting shafts, such as automotive differentials.
Worm gears can achieve large transmission ratios and are often used in lifting devices.
Planetary gears have a compact structure and smooth transmission, and are an important component of automatic transmissions and reducers.

These seven types of gears each have their own characteristics and are widely used in automobiles, industrial machinery, energy equipment, and other fields. They are indispensable and important components in modern mechanical transmission systems.