Smoothness and lack of ripple are crucial for the printing of elaborate color pictures on reusable plastic cups available at fast-food chains. The color image comprises of millions 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 usually printed separately). The gearheads must work efficiently enough to synchronize ink blankets, printing plates, and cup rollers without presenting any ripple or inaccuracies that may smudge the image. In this instance, the hybrid gearhead decreases motor shaft runout mistake, which reduces roughness.
At times a motor’s capability could be limited to the point where it requires gearing. As servo producers develop better motors that can muscle applications through more difficult moves and generate higher torques and speeds, these motors need gearheads equal to the task.
Interestingly, no more than a third of the movement control systems in service use gearing at all. There are, of training course, reasons to do therefore. Using a gearhead with a servo motor or using a built-in servo gear reducer gearmotor can enable the use of a smaller motor, therefore reducing the machine size and cost. There are three primary advantages of choosing gears, each of which can enable the use of smaller motors and drives and therefore lower total system cost:
Torque multiplication. The gears and quantity of the teeth on each gear develop a ratio. If a motor can generate 100 in-pounds of torque, and a 5:1 ratio equipment head is mounted on its result, the resulting torque will end up being near to 500 in-lbs.
When a motor is operating at 1,000 rpm and a 5:1 ratio gearhead is mounted on it, the speed at the output will be 200 rpm. This speed reduction can improve system overall performance because many motors usually do not operate effectively at suprisingly low rpm. For example, look at a stone-grinding mechanism that requires the motor 
to run at 15 rpm. This slow velocity makes turning the grinding wheel tough because the motor will cog. The variable level of resistance of the stone being floor 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 using 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 want to control. The use of a gearhead to raised match the inertia of the electric motor to the inertia of the strain can enable the use of a smaller engine and results in a far more responsive system that’s easier to tune.