The comparison between planetary gear reducers and double enveloping worm gear gears- Shanghai SGR Heavy Industry Machinery Co., Ltd.

Recently, the gearbox manufacturer, Shanghai SGR Heavy Industry Machinery Co.,Ltd. announced that it will participate in the 28th China International Trenchless Technology Symposium and Exhibition. On the exhibition, the gearbox manufacturer SGR will exhibit its mainstream products planetary gear reducers and double enveloping worm gear reducers.

In fact, both of double enveloping worm gear reducers and planetary gear reducers are common mechanical transmission devices and are also SGR's main products. They both have a series of advantages and disadvantages.

Many people do not know the difference between the worm gear reducers and planetary gear reducers , in this article, I will combine the advantages and disadvantages of the two reducers and compare them one by one.

(1) Advantages of double enveloping worm gear reducers.

The double enveloping worm gear reducer has a relatively simple structure and fewer components, so it is relatively compact in overall size and is suitable for occasions with limited space.

Due to the reasonable arrangement of the transmission shaft, the double enveloping worm gear reducer has a high transmission efficiency, which can reach more than 90%, saving energy and operating costs.

The double enveloping worm gear reducer can achieve multi-gear transmission ratios by designing different transmission shafts, which is suitable for different working conditions and requirements.

The arrangement of the transmission shaft makes the double enveloping reducer run very smoothly, reducing vibration and noise and extending the life of the equipment.

A notable feature of double enveloping worm gear reducers is their self-locking function, when the worm wheel is subjected to external forces, it is difficult to reverse the drive of the worm. This feature is very useful in some applications where the load needs to be prevented from free falling, such as lifting equipment or safety door systems.

Double enveloping worm gear reducers are particularly suitable for applications that require a large reduction ratio in a compact space. Due to their self-locking characteristics and quiet operation, worm reducers are often used in elevators, conveyors, packaging machinery, and precision positioning systems.

(2)Disadvantages of double enveloping worm gear reducers

Compared with planetary gear reducers, the torque transmission capacity of double enveloping reducers is weaker and is not suitable for some occasions that require large torque output.

The structure of the double enveloping worm gear reducer limits its load-bearing capacity and cannot be used in some heavy-load conditions.

(3) Advantages of planetary gear reducers

Planetary gear reducers use planetary gears and ring gears to achieve high torque output and are suitable for applications requiring higher torque.

The planetary gear reducer has a relatively strong structure and a strong load capacity, and is suitable for some heavy-load conditions.

Due to the arrangement of the planetary wheels, the operation of the planetary gear reducer is very stable, which reduces vibration and noise, and is conducive to the long-term stable operation of the equipment.

The component layout of the planetary gear reducer is relatively complex, but the structural design is relatively reasonable, the reliability is high, and the maintenance cost is low.

Planetary gear reducers are suitable for a wide range of applications, especially when efficient transmission is required and space requirements are not high. For example, automotive transmissions, industrial automation equipment, wind turbines, etc.

Besides, planetary gear reducers can be flexibly configured into single-stage or multi-stage structures according to specific needs, and can provide a variety of different reduction ratio options to meet the needs of various working conditions.

(4) Disadvantages of planetary gear reducers

Due to the relatively complex structure of the planetary gear reducer and its large overall size, it is not suitable for occasions with limited space.

Compared with the double enveloping worm gear reducer, the transmission efficiency of the planetary gear reducer is slightly lower, about 85% to 95%.

In summary, the double enveloping worm gear reducer and the planetary gear reducer both have unique advantages and disadvantages. When selecting, mechanical and industrial enterprises choose the appropriate reducer depending on the requirements of the specific application, such as torque requirements, space limitations, transmission efficiency, etc. In engineering design, these factors need to be considered comprehensively to select the appropriate reducer model to meet actual needs. (Author, SGR, Angie Zhang)

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