As an example, look at a person riding a bicycle, with the person acting like the motor. If see your face tries to trip that bike up a steep hill in a gear that is created for low rpm, he or she will struggle as
they try to maintain their stability and achieve an rpm that will allow them to climb the hill. However, if they change the bike’s gears right into a swiftness that will produce a higher rpm, the rider could have
a much easier period of it. A constant force could be applied with soft rotation being offered. The same logic applies for industrial applications that require lower speeds while maintaining necessary
torque.

• Inertia matching. Today’s servo motors are generating more torque in accordance with frame size. That’s because of dense copper windings, light-weight materials, and high-energy magnets.
This creates greater inertial mismatches between servo motors and the loads they are trying to move. Utilizing a gearhead to servo gearbox better match the inertia of the electric motor to the inertia of the load allows for utilizing a smaller engine and results in a more responsive system that is easier to tune. Again, that is attained through the gearhead’s ratio, where the reflected inertia of the load to the motor is decreased by 1/ratio2.

Recall that inertia may be the measure of an object’s level of resistance to improve in its movement and its function of the object’s mass and form. The higher an object’s inertia, the more torque is required to accelerate or decelerate the object. This implies that when the load inertia is much larger than the electric motor inertia, sometimes it can cause extreme overshoot or boost settling times. Both circumstances can decrease production line throughput.

However, when the electric motor inertia is bigger than the load inertia, the electric motor will require more power than is otherwise necessary for the particular application. This increases costs since it requires spending more for a electric motor that’s bigger than necessary, and because the increased power intake requires higher operating costs. The solution is to use a gearhead to complement the inertia of the motor to the inertia of the load.