4 reasons for using a stepper motor gear reduction

In some applications which require a fine and more precise regulation of output speed and torque with minor variations of input control or supply current, a stepper motor with gear reduction can be used to achieve maximum flexibility.

As mentioned before, there are the main 4 reasons why to choose a stepper motor with gear riduction:

• Decreases the inertia ratio between load and motor. If the value of the load inertia is higher than the value of the motor inertia, it is possible to experience problems in load and step control and sometimes motor stall. To avoid this condition, it is necessary either to use a motor with a higher load inertia, and therefore of greater size, weight and cost, or to add a gearbox that can significantly decrease the inertia ratio between motor and load

• Increases torque at load. In a combined motor and gearbox system, the latter multiplies the motor torque in proportion to the reduction ratio while reducing the speed

• Lowers motor oscillations. In the presence of a gearbox, increasing the speed the motor moves outside its resonant frequency range and avoids oscillation and vibration, decreasing the risk of motor stall or step loss

• Allows the use of a smaller motor. The torque generated by the motor and gearbox combination is higher and can meet the requirements of many applications, thus avoiding the need for larger and more expensive motors to achieve the same torque.