Articles on: Learning & FAQ

Regarding the Situation of Using a Worm Gear Reducer for Speed Increase

Currently, our company offers three types of gearboxes for sale: planetary gearboxes, worm gearboxes, and spur gearboxes. Gearboxes, also known as speed reducers or reducers, are important components of mechanical transmission systems. They are used to transmit power while changing speed and output torque.

Gearboxes serve two main purposes:

Transmit a certain amount of power;
Input high-speed rotation and output low-speed rotation to achieve the goal of speed reduction.

In other words, they primarily function to reduce speed and increase torque. Therefore, the output shaft is generally thicker than the input shaft, which can be observed externally. Under the assumption of neglecting frictional resistance, the input and output shafts transmit equal power, where power equals torque multiplied by rotational speed. Thus, when power is equal, the input shaft has a higher rotational speed, resulting in lower torque, and therefore requiring a smaller shaft diameter. Conversely, the output shaft has a lower rotational speed, requiring a larger shaft diameter to accommodate higher torque.

In summary, the main function of a gearbox is to decrease speed and increase torque.

Based on the above information, it is evident that a reduction gearbox can only be used for speed reduction. If the input and output shafts of the gearbox are swapped for speed increase, several issues arise. Firstly, the original slender shaft would have to bear higher rotational speeds, which may exceed its strength and potentially cause damage. Secondly, the internal structure of the gearbox would experience rapid wear and tear, and the efficiency of the gearbox would decrease significantly.

In conclusion, a reduction gearbox should not be used for speed increase.

Updated on: 31/10/2023

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