Smoothness and absence of ripple are essential for the printing of elaborate color pictures on reusable plastic-type material cups available at fast-food chains. The colour image comprises of an incredible number of tiny ink dots of many shades and shades. The entire cup is printed in one move (unlike regular color separation where each color is usually printed separately). The gearheads must work smoothly enough to synchronize ink blankets, printing plates, and cup 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.
At times a motor’s capability could be limited to the point where it needs gearing. As servo manufacturers develop better motors that can muscle applications through more complicated moves and produce higher torques and speeds, these motors need gearheads add up to the task.
Interestingly, no more than a third of the motion control systems operating use gearing at all. There are, of training course, reasons to do therefore. Utilizing a gearhead with a servo motor or using a gearmotor can enable the usage of a smaller motor, therefore reducing the machine size and cost. There are three main advantages of choosing gears, each which can enable the utilization of smaller sized motors and drives and therefore lower total system cost:
Torque multiplication. The gears and number of the teeth on each gear develop a ratio. If a electric motor can generate 100 in-lbs of torque, and a 5:1 ratio equipment head is mounted on its result, the resulting torque will be near to 500 in-lbs.
Whenever a motor is working at 1,000 rpm and a 5:1 ratio gearhead is mounted on it, the quickness at the output will be 200 rpm. This speed decrease can improve system overall performance because many motors usually do not operate efficiently at very low rpm. For example, consider a stone-grinding mechanism that will require the motor to run at 15 rpm. This slow speed makes turning the grinding wheel tough because the motor tends to cog. The variable resistance of the rock being surface also hinders its simple turning. By adding a 100:1 gearhead and letting the motor run at 1,500 rpm, the engine and gear mind provides smooth rotation as the gearhead output offers a more constant drive using its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque in accordance with frame size thanks to lightweight materials, dense copper windings, and high-energy magnets. The effect is better inertial mismatches between servo motors and the loads they are trying to control. The use of a gearhead to raised match the inertia of the electric motor to the inertia of the load can enable the utilization of a smaller engine and servo motor gearbox outcomes in a far more responsive system that is easier to tune.