Smoothness and absence of ripple are crucial for the printing of elaborate color images on reusable plastic-type cups available at fast-food chains. The colour image comprises of millions of tiny ink spots of many shades and shades. The complete cup is printed in one complete (unlike regular color separation where each color is usually imprinted separately). The gearheads must function efficiently enough to synchronize ink blankets, printing plates, and glass rollers without introducing any ripple or inaccuracies that may smudge the image. In this instance, the hybrid gearhead reduces motor shaft runout mistake, which reduces roughness.
At times a motor’s capability could be limited to the point where it needs gearing. As servo manufacturers develop more powerful motors that can muscle tissue applications through more difficult moves and generate higher torques and speeds, these motors require gearheads equal to the task.
Interestingly, only about a third of the motion servo motor gearbox control systems operating use gearing at all. There are, of course, good reasons to do therefore. Using a gearhead with a servo motor or using an integrated gearmotor can enable the utilization of a smaller motor, thereby reducing the system size and price. There are three primary advantages of choosing gears, each which can enable the usage of smaller motors and drives and for that reason lower total system 
cost:
Torque multiplication. The gears and amount of the teeth on each gear generate a ratio. If a engine can generate 100 in-lbs of torque, and a 5:1 ratio gear head is mounted on 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 attached to it, the velocity at the output will be 200 rpm. This speed decrease can improve system efficiency because many motors usually do not operate efficiently at suprisingly low rpm. For example, look at a stone-grinding mechanism that requires the motor to perform at 15 rpm. This slow speed makes turning the grinding wheel difficult because the motor tends to cog. The variable 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 power using its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque relative to frame size thanks to lightweight materials, dense copper windings, and high-energy magnets. The effect is better inertial mismatches between servo motors and the loads they want to control. The usage of a gearhead to raised match the inertia of the engine to the inertia of the load can enable the utilization of a smaller motor and results in a more responsive system that’s easier to tune.