What is the reducer for? Is it to slow down? Is there a company in Songgang, Shenzhen called Shenzhen Borui that specializes in this?

Reducers are widely used, because the purpose of deceleration is generally achieved by meshing motors, internal combustion engines or other high-speed power with large gears on the output shaft through gears with fewer teeth on the input shaft of the reducer. It is a kind of low-speed and high-torque transmission equipment with quick and convenient operation, lightweight and easy to carry. Ordinary reducers also have several pairs of gears with the same principle to achieve the ideal deceleration effect, and the tooth ratio of large and small gears is the transmission ratio.

Planetary reducer, a set of planetary gears can't meet the larger transmission ratio at all, sometimes it takes two or three sets to meet the user's requirements for a larger transmission ratio. With the increase of the number of planetary gears, the length of the two-stage or three-stage reducer will increase and the efficiency will decrease. Return clearance: when the output end is fixed and the input end rotates clockwise and counterclockwise, so that the input end generates rated torque of 2%, the input end of the reducer has a slight angular displacement, which is the return clearance. The unit is "minutes", which is one sixtieth of a degree. Some people call it back pass.

The Shenzhen Borui you mentioned is a planetary reducer. You can Baidu it.

So, what fields can planetary reducers be used in?

Planetary reducer is a widely used industrial product, and its performance can be comparable to other military-grade reducer products, but it has the price of industrial-grade products and is used in a wide range of industrial occasions.

The reducer has the advantages of small volume, light weight, high bearing capacity, long service life, stable operation and low noise. It has the characteristics of power splitting and multi-tooth meshing. The maximum input power can reach 104kW. Suitable for lifting and transportation, construction machinery, metallurgy, mining, petrochemical industry, construction machinery, light textile, medical equipment, instruments, automobiles, ships, weapons and aviation.

The planetary reducer produced by Germany's NEGUART is in a leading position in many key indexes, such as output torque, noise, efficiency, radial and axial force, life and reverse clearance. PLS series planetary reducer is a military-grade high-precision and high-reliability reducer, which is suitable for occasions requiring large output torque and extremely low return clearance, and is widely used in military, aerospace and other fields with excellent performance and first-class quality.

Planetary reducer is a new type of reducer with wide applications. The internal gear is carburized and quenched by 20CvMnT. The whole machine has the characteristics of small structural size, large output torque, large speed ratio, high efficiency and safe and reliable performance. This machine is mainly used for the slewing mechanism of tower crane, and can also be used as a supporting component in lifting, excavation, transportation, construction and other industries.

Working principle of planetary reducer;

The inner gear ring (a) is closely combined with the gear box shell, and the sun gear (b) driven by external power is installed in the center of the gear ring, between which there is a group of planetary gear sets (c) which are equally assembled on the tray by three gears, and the planetary gears periodically float under the support of the output shaft, the inner gear ring and the sun gear; When the input side drives the sun gear, the planetary reducer can drive the planetary gear to rotate and revolve around the center along the track of the internal gear ring, and the rotation of the planet drives the output shaft connected to the tray to output power.

I hope I can help you, thank you!