Smoothness and lack of ripple are crucial for the printing of elaborate color images on reusable plastic material cups offered by fast-food chains. The color image comprises of an incredible number of tiny ink dots of many shades and shades. The entire cup is printed in one pass (unlike regular color separation where each color is certainly published separately). The gearheads must work efficiently enough to synchronize ink blankets, printing plates, and glass rollers without presenting any ripple or inaccuracies that may smudge the image. In this case, the hybrid gearhead reduces motor shaft runout mistake, which reduces roughness.
At times a motor’s capability could be limited to the stage where it requires gearing. As servo producers develop better motors that can muscle mass applications through more difficult moves and produce higher torques and speeds, these motors require gearheads equal to the task.
Interestingly, only about a third of the motion control systems operating use gearing at all. There are, of course, reasons to do so. Using a gearhead with a servo motor or using an integrated gearmotor can enable the use of a smaller motor, thereby reducing the system size and cost. 
There are three major advantages of going with gears, each of which can enable the utilization of smaller motors and drives and therefore lower total system cost:
Torque multiplication. The gears and amount of teeth on each gear produce a ratio. If a engine can generate 100 in-pounds of torque, and a 5:1 ratio equipment head is attached to its output, the resulting torque will be 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 velocity at the output will be 200 rpm. This speed reduction can improve system functionality because many motors usually do not operate effectively at suprisingly low rpm. For example, look at a stone-grinding mechanism that will require the motor to run at 15 rpm. This slow rate makes turning the grinding wheel hard because the motor tends to cog. The variable resistance of the stone being floor also hinders its simple turning. With the addition of a 100:1 gearhead and letting the engine run at 1,500 rpm, the motor and gear head provides smooth rotation while the gearhead output offers a more constant push using its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque relative to frame size because of lightweight components, dense copper windings, and high-energy magnets. The effect is greater inertial mismatches servo gear reducer between servo motors and the loads they want to control. The usage of a gearhead to raised match the inertia of the motor to the inertia of the strain can enable the use of a smaller motor and outcomes in a more responsive system that’s easier to tune.