Smoothness and lack of ripple are crucial for the printing of elaborate color images on reusable plastic-type cups offered by fast-food chains. The colour image is made up of an incredible number of tiny ink spots of many colors and shades. The complete glass is printed in a single pass (unlike regular color separation where each color is certainly imprinted separately). The gearheads must run 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 reduces motor shaft runout error, which reduces roughness.
At times a motor’s capability could be limited to the main point where it needs gearing. As servo manufacturers develop more powerful motors that can muscle tissue applications through more complicated moves and create higher torques and speeds, these motors require gearheads add up 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. Utilizing a gearhead with a servo motor or using a built-in gearmotor can enable the utilization of a smaller motor, thereby reducing the machine size and cost. There are three main advantages of choosing gears, each of which can enable the utilization of smaller motors and drives and therefore lower total system price:
Torque multiplication. The gears and quantity of the teeth on each gear create a ratio. If a motor can generate 100 in-lbs of torque, and a 5:1 ratio equipment head is mounted on its result, 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 effectively at suprisingly low rpm. For example, consider a stone-grinding mechanism that will require the motor to perform at 15 rpm. This slow speed makes turning the grinding wheel tough because the motor will cog. The variable resistance of the rock being surface also hinders its simple turning. With the addition of a 100:1 gearhead and letting the electric motor run at 1,500 rpm, the engine and gear mind provides smooth rotation while the gearhead output provides a more constant power 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 effect is greater inertial mismatches between servo motors and the loads they are trying to control. The usage of a gearhead to raised 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.
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