Smoothness and absence of ripple are crucial for the printing of elaborate color images on reusable plastic-type material cups offered by fast-food chains. The color image is made up of an incredible number of tiny ink dots of many colors and shades. The complete cup is printed in one pass (unlike regular color separation where each color is published separately). The gearheads must function smoothly enough to synchronize ink blankets, printing plates, and glass rollers without presenting any ripple or inaccuracies that may smudge the image. In cases like this, the hybrid gearhead reduces motor shaft runout mistake, which reduces roughness.
Sometimes a motor’s capability may be limited to the point where it requires gearing. As servo producers develop more powerful motors that can muscle applications through more difficult moves and produce higher torques and speeds, these motors need gearheads add up to the task.
Interestingly, no more than a third of the movement control systems in service use gearing at all. There are, of course, reasons to do so. Using a gearhead with a servo engine or using a gearmotor can enable the usage of a smaller motor, thereby reducing the machine size and price. There are three main advantages of choosing gears, each which can enable the utilization of smaller sized motors and drives and therefore lower total system price:
Torque multiplication. The gears and quantity of tooth on each gear create a ratio. If a engine can generate 100 in-lbs of torque, and a 5:1 ratio equipment head is mounted on its result, the resulting torque will become close to 500 in-lbs.
Whenever a motor is running at 1,000 rpm and a 5:1 ratio gearhead is mounted on it, the quickness at the servo gear reducer output will be 200 rpm. This speed decrease can improve system performance because many motors usually 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 acceleration makes turning the grinding wheel hard because the motor will cog. The variable resistance of the rock being surface also hinders its ease of turning. With the addition of a 100:1 gearhead and letting the engine run at 1,500 rpm, the engine and gear head provides smooth rotation as the gearhead output offers a more constant power with its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque in 
accordance with frame size thanks to lightweight components, dense copper windings, and high-energy magnets. The result is higher 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 electric motor to the inertia of the load can enable the use of a smaller engine and outcomes in a far more responsive system that is easier to tune.