The gearbox adjusts the output speed and torque of the motor as required. Since Shu is the output speed of the motor, it is usually constant (only a few gears), but the actual required speed varies greatly, so it is necessary to use a gearbox to adjust the required speed range.
When the load of the servo motor is very heavy, blindly improving the power of the servo motor provides the required torque, resulting in a loss of cost. Therefore, it is wise to select a suitable servo gearbox within the required speed range. The function of the servo gear itself is to reduce the speed and increase the output torque.