Smoothness and absence of ripple are crucial for the printing of elaborate color images on reusable plastic cups available at fast-food chains. The color image comprises of an incredible number of tiny ink spots of many colours and shades. The complete glass is printed in one pass (unlike regular color separation where each color is published separately). The gearheads must run easily enough to synchronize ink blankets, printing plates, and glass rollers without introducing any ripple or inaccuracies that may smudge the picture. In this case, the hybrid gearhead reduces motor shaft runout mistake, which reduces roughness.
At times a motor’s capability may be limited to the point where it needs gearing. As servo manufacturers develop better motors that can muscle tissue applications through more complicated moves and create higher torques and speeds, these motors need gearheads equal to the task.
Interestingly, 
only about a third of the motion control systems in service use gearing at all. There are, of training course, good reasons to do therefore. Using a gearhead with a servo electric motor or using an integrated gearmotor can enable the usage of a smaller motor, servo gear reducer thereby reducing the system size and price. There are three primary advantages of choosing gears, each of which can enable the utilization of smaller motors and drives and for that reason lower total system cost:
Torque multiplication. The gears and quantity of the teeth on each gear create a ratio. If a engine can generate 100 in-lbs of torque, and a 5:1 ratio gear head is attached to its output, the resulting torque will end up being 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 rate at the output will be 200 rpm. This speed decrease can improve system efficiency because many motors do not operate efficiently at very low rpm. For example, look at a stone-grinding mechanism that will require the motor to perform at 15 rpm. This slow swiftness makes turning the grinding wheel difficult because the motor will cog. The variable resistance of the stone being surface also hinders its simple turning. By adding a 100:1 gearhead and letting the electric motor run at 1,500 rpm, the electric motor and gear head provides smooth rotation while the gearhead output offers a more constant drive with its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque relative to frame size because of lightweight materials, dense copper windings, and high-energy magnets. The result is better 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 electric motor to the inertia of the load can enable the use of a smaller electric motor and outcomes in a more responsive system that’s easier to tune.