Understanding the Function and Advantages of Planetary Gearbox



Servo Planetary Gearbox is extensively applied in industrial drive technology for compact design and versatile applications. The planetary gears are not mounted in the stationary positive and they perform orbital movement. 

A planetary gearbox consists of sun gear, planetary gears ring gear and carrier. The input shaft drives the sun gear for rotating it. The planetary gear helps to mesh with the sun gear and rotate on the axes as the sun gear starts rotating. The planetary gear also engages the stationary ring gear that cause to to rotate around the sun gear. The carrier holds the gear together and sets the spacing. it rotates with the planetary gear and combine with the output shaft. 

The arrangement and trajectory of the gear can be compared to planet-solar system where the planet resolve around the sun that is how the planetary gearbox was named. The number of planetary gear is not fixed however, in industrial applications, as the number of gears increases a large number of tooth meshes the amount of torque that can be transmitted can be increased as well. 

Understanding the Characteristics of Planetary Gear Box 

Since planetary gearbox contains multiple planetary gears and multiple teeth mesh is used during the operation. The power distribution helps to ensure there is higher efficiency than other types of gears and therefore also allows higher transmittable torque with compact design. 

The gear ration is determined by the ratio between the ring gear and sun gear. If the size of the ring remains the same; you can change the gear ratio by changing the number of teeth of the sun gear and planetary gear. 

In case, higher ratio is required Planetary Gearboxes for AMRs can be arranged in succession in the same ring gear. Planetary gearboxes are suitable for counterclockwise and clockwise rotation. 

Different Types of Planetary Gear Boxes 

Wheel Drive 

The sun gear drives the surrounding planetary gear that are held in a carrier in the wheel drive gearbox. It makes the outer ring gears rotate when the sun gear in driven. It is possible to mount the wheel on the house of the gearbox. 

Shaft Output 

The sun gear helps to drive the surrounding planetary gears that are housed in rotating carrier. The gearbox housing is fixed directly to the machine with the output being a rotating shaft. 

Spindle Output 

The work and responsibility of the spindle output planetary gearbox is similar to that of the shaft output; although the output is provided as a flange. 

Advantage of Planetary Gearbox 

Planetary gearbox coaxially aligns input and output shaft. This type of assembly means that planetary gearboxes are compact. They transmit high torque in a compact design with high torque density and low backlash. 

The simple design is efficient and effective way to transfer power from the motor to the output. Around 97% of the input energy is transferred as output. You can achieve high gear ratio that helps to enable large speed reduction.

Bottom Line

Planetary gearboxes are widely uses in industrial application for their various advantages. It can handle speed and torque conversion in electrical system. Also, the use of planetary gear is not limited to industrial applications, they can be found is various fields as well. For more related information, please Visit Our Website!

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