Smoothness and absence of ripple are essential for the printing of elaborate color pictures on reusable plastic-type material cups offered by fast-food chains. The colour image comprises of an incredible number of tiny ink spots of many shades and shades. The entire glass is printed in a single move (unlike regular color separation where each color is certainly published separately). The gearheads must work smoothly enough to synchronize ink blankets, printing plates, and glass rollers without introducing any ripple or inaccuracies that may smudge the image. In cases like this, the hybrid gearhead decreases motor shaft runout error, which reduces roughness.
Sometimes a motor’s capability could be limited to the point where it requires gearing. As servo servo motor gearbox producers develop better motors that can muscle tissue applications through more complicated moves and generate higher torques and speeds, these motors require gearheads equal to the task.
Interestingly, no more than a third of the motion control systems operating 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, therefore reducing the system size and price. There are three principal advantages of choosing gears, 
each 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 teeth on each gear make a ratio. If a engine can generate 100 in-lbs of torque, and a 5:1 ratio equipment head is mounted on its result, the resulting torque will end up being close to 500 in-lbs.
Whenever a motor is operating at 1,000 rpm and a 5:1 ratio gearhead is attached to it, the acceleration at the output will be 200 rpm. This speed reduction can improve system performance because many motors do not operate effectively at very low rpm. For example, consider a stone-grinding mechanism that requires the motor to perform at 15 rpm. This slow acceleration makes turning the grinding wheel hard because the motor will cog. The variable resistance of the stone being surface also hinders its ease of turning. By adding a 100:1 gearhead and letting the electric motor run at 1,500 rpm, the engine and gear head provides smooth rotation as the gearhead output offers a more constant pressure using its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque relative to frame size thanks to lightweight components, dense copper windings, and high-energy magnets. The effect is greater inertial mismatches between servo motors and the loads they want to control. The usage of a gearhead to raised match the inertia of the electric motor to the inertia of the load can enable the use of a smaller motor and outcomes in a more responsive system that’s easier to tune.