Smoothness and lack of servo gear reducer ripple are crucial for the printing of elaborate color pictures on reusable plastic-type material cups available at fast-food chains. The color image is made up of millions of tiny ink dots of many colours and shades. The complete glass is printed in one pass (unlike regular color separation where each color is definitely published separately). The gearheads must function smoothly enough to synchronize ink blankets, printing plates, and cup rollers without introducing any ripple or inaccuracies that may smudge the image. In this instance, the hybrid gearhead decreases motor shaft runout error, which reduces roughness.
At times a motor’s capability could be limited to the point where it needs gearing. As servo manufacturers develop better motors that can muscle tissue applications through more difficult moves and create 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 course, good reasons to do so. Utilizing a gearhead with a servo electric motor or using a gearmotor can enable the usage of a smaller motor, thereby reducing the machine size and price. There are three primary advantages of going with gears, each which can enable the use of smaller motors and drives and for that reason lower total system cost:
Torque multiplication. The gears and quantity of the teeth on each gear generate a ratio. If a electric motor can generate 100 in-lbs of torque, and a 5:1 ratio gear head is attached to its output, the resulting torque will be close to 500 in-lbs.
When a motor is working at 1,000 rpm and a 5:1 ratio gearhead is attached to it, the swiftness at the output will be 200 rpm. This speed decrease can improve system efficiency because many motors usually do not operate efficiently at very low rpm. For example, look at a stone-grinding mechanism that will require the motor to perform at 15 rpm. This slow rate makes turning the grinding wheel difficult because the motor will cog. The variable level of resistance of the 
rock being floor also hinders its ease of turning. By adding a 100:1 gearhead and letting the electric motor run at 1,500 rpm, the engine and gear head provides smooth rotation while the gearhead output provides a more constant push with its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque relative to frame size thanks to lightweight components, dense copper windings, and high-energy magnets. The result is greater inertial mismatches between servo motors and the loads they are trying to control. The utilization of a gearhead to raised match the inertia of the engine to the inertia of the strain can enable the use of a smaller electric motor and outcomes in a far more responsive system that is easier to tune.