WPWKA135,WPWKA155,WPWKA175,WPWKA200,WPWKA250 Planetary and cycloidal reducers are important mechanical transmission devices that can convert high-speed low torque power into low-speed high torque power output. Both have their own advantages and disadvantages. Now let's compare and analyze the advantages and disadvantages of cycloidal reducers.
1、 Planetary reducer
A planetary reducer is an internal gear transmission device composed of planetary gears, sun gears, and internal gears. The planetary gear rotates on the flange at the bottom of the solar wheel, while also rotating around its own axis; The internal gear is fixed inside the casing. The meshing between the planetary gear and the internal gear forms a transmission device. The advantages and disadvantages of planetary reducers are as follows:
Advantages and disadvantages of planetary and cycloidal reducers
Advantages of cycloidal reducers:
1. High output torque and power: Due to the planetary gear being fixed on the outer gear profile arc rack, the inner gear is composed of small wheels unfolded on the outer gear circle, resulting in a very high output torque and power.
2. High transmission efficiency: The transmission efficiency of planetary reducers is over 98%, which is much higher than other types of reducers.
3. Long lifespan: Due to the multi tooth differential transmission of planetary reducers, the meshing and impact of gears are greatly reduced. Therefore, the lifespan of planetary reducers is relatively long, and they are not easily affected by bumps and vibrations.
Disadvantages of planetary reducers:
1. High price: Planetary reducers are relatively expensive due to their advanced design ideas and high-tech manufacturing processes.
2. Difficulty in maintenance: Compared to other types of reducers, planetary reducers have a higher level of maintenance difficulty.
3. Difficulty in installation: The installation of planetary reducers is not as simple as cycloidal reducers, and requires certain technical means and experience.
2、 Cycloidal reducer
A cycloidal reducer is a type of reducer designed and built using the theory of cycloidal curves. It mainly consists of two parts, namely an inner cycloidal wheel and an outer cycloidal wheel. The meshing between the inner and outer wheels can achieve a deceleration effect. The advantages and disadvantages of cycloidal reducers are as follows:
Advantages:
1. High transmission accuracy: The transmission accuracy of the cycloidal reducer is high, and the error is within a certain range.
2. Small volume: Due to the compact structure and fine workmanship of the cycloidal reducer, its volume is relatively small and can achieve exquisite mechanical design.
3. High reliability: The transmission chain of the cycloidal reducer is relatively short, and the number of internal gears is also relatively small, so its reliability is high and the failure rate is low.
Disadvantages:
1. High sliding friction: The meshing between the inner and outer gears of the cycloidal reducer mostly adopts sliding friction, which is very easy to cause wear and damage.
2. High noise: The meshing sound between the gears of the cycloidal reducer is generally loud, which can cause certain noise pollution to the environment.
3. Low operating efficiency: Due to the meshing mode of the internal and external gears of the cycloidal reducer, its operating efficiency is slightly lower than that of the planetary reducer, only about 80% to 90%.
3、 Conclusion
From the above analysis, it can be seen that planetary reducers and cycloidal reducers have their own advantages and disadvantages in terms of structure and performance. Suitable for different mechanical devices, operating environments, and performance requirements.
