Smoothness and lack of servo motor gearbox ripple are essential for the printing of elaborate color images on reusable plastic-type cups available at fast-food chains. The color image comprises of an incredible number of tiny ink dots of many colours and shades. The entire glass is printed in one move (unlike regular color separation where each color is certainly imprinted separately). The gearheads must operate efficiently enough to synchronize ink blankets, printing plates, 
and cup rollers without introducing any ripple or inaccuracies that may smudge the picture. In this case, the hybrid gearhead reduces motor shaft runout error, which reduces roughness.
Sometimes a motor's capability could be limited to the point where it requires gearing. As servo producers develop better motors that can muscle tissue applications through more difficult moves and produce higher torques and speeds, these motors need 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 training course, good reasons to do therefore. Utilizing a gearhead with a servo engine or using a gearmotor can enable the usage of a smaller motor, therefore reducing the machine size and price. There are three principal advantages of choosing gears, each which can enable the use of smaller sized motors and drives and therefore lower total system price:
Torque multiplication. The gears and number of teeth on each gear produce 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 be close to 500 in-lbs.
Whenever a motor is running 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 suprisingly low rpm. For example, consider a stone-grinding mechanism that will require the motor to perform at 15 rpm. This slow rate makes turning the grinding wheel challenging because the motor tends to cog. The variable level of resistance of the stone being floor also hinders its ease of turning. By adding a 100:1 gearhead and letting the motor run at 1,500 rpm, the engine and gear head provides smooth rotation as the gearhead output provides a more constant push using its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque in accordance with frame size because of lightweight materials, dense copper windings, and high-energy magnets. The result is higher inertial mismatches between servo motors and the loads they want to control. The usage of a gearhead to better match the inertia of the motor to the inertia of the strain can enable the use of a smaller engine and outcomes in a far more responsive system that is easier to tune.