Smoothness and lack of ripple are crucial for the printing of elaborate color pictures on reusable plastic material cups available at fast-food chains. The color image comprises of an incredible number of tiny ink dots of many colours and shades. The complete glass is printed in one move (unlike regular color separation where each color is definitely printed separately). The gearheads must work easily enough to synchronize ink blankets, printing plates, and glass rollers without presenting any ripple or inaccuracies that may smudge the picture. In this instance, the hybrid gearhead decreases motor shaft runout error, which reduces roughness.
Sometimes a motor’s capability could be limited to the stage where it requires gearing. As servo producers develop more powerful motors that can muscle mass applications through more difficult moves and produce higher torques and speeds, these motors need gearheads equal to the task.
Interestingly, only about a third of the movement control systems in service use gearing at all. There are, of course, good reasons to do so. Using a gearhead with a servo motor or using a gearmotor can enable the use of a smaller motor, thereby reducing the machine size and price. There are three main advantages of going with gears, each of which can enable the use of smaller motors and drives and for that reason lower total system price:
Torque multiplication. The gears and number of tooth on each gear develop a ratio. If a electric motor can generate 100 in-pounds of torque, and a 5:1 ratio gear head is attached to its output, the resulting torque will become near to 500 in-lbs.
When a motor is running at 1,000 rpm and a 5:1 ratio gearhead is attached to it, the quickness at the output will be 200 rpm. This speed reduction can improve system performance because many motors do not operate efficiently at suprisingly low rpm. For example, consider a stone-grinding mechanism that will require the motor to run at 15 rpm. This slow quickness makes turning the grinding wheel challenging because the motor tends to cog. The variable resistance of the rock being ground also hinders 
its ease of turning. With the addition of a 100:1 gearhead and letting the electric motor run at 1,500 rpm, the motor and gear mind provides smooth rotation while the gearhead output provides a more constant push using its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque in accordance with frame size thanks to lightweight materials, dense servo motor gearbox copper windings, and high-energy magnets. The result is greater inertial mismatches between servo motors and the loads they are trying to control. The usage of a gearhead to better match the inertia of the engine to the inertia of the load can enable the use of a smaller electric motor and results in a far more responsive system that is easier to tune.
