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Transmission type and characteristics of planetary gear reducer
Types and Characteristics of Planetary Gear Reducers
Planetary gear reducers are widely used in various mechanical systems due to their compact design, high efficiency, and versatility. There are several types of planetary gear reducers, each with unique features and applications.
NGW type is known for its high efficiency, small size, and lightweight. It has a simple structure that makes it easy to manufacture. This type is suitable for both large and small power transmission under any working conditions. It is commonly used in power and auxiliary transmissions, and its application is not limited by the working system.
NW type shares similar characteristics with NGW but has a smaller radial size and a larger range of transmission ratios. However, because it uses double planetary gears, its manufacturing and installation are more complex.
WW type has a less efficient motion structure and is mainly used for motion synthesis and decomposition. It is commonly found in power plants such as cars, tanks, and aircraft, where it functions as a differential.
NN type offers a large transmission ratio but has lower efficiency. It is suitable for short-term operations and is often used in medium and small power transmission systems.
NGWN type features a compact structure with a wide range of transmission ratios. However, its manufacturing and installation are complicated. Due to the use of single-toothed planetary gears, the angle must be adjusted to meet concentricity requirements, which reduces efficiency. It is best suited for intermittent, short-term, and low-power applications.
N type has a compact structure and small external dimensions, making it easy to machine. However, the radial force on the planetary gear bearings is significant. It is recommended for short-term operation in medium and small power systems.
In addition, cycloidal pin gear drives are another type of planetary gear system. They require high manufacturing precision and are suitable for various working conditions. They are currently widely used due to their reliability and performance.
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