Smoothness and absence of ripple are essential for the printing of elaborate color images on reusable plastic-type cups offered by fast-food chains. The color image is made up of an incredible number of tiny ink dots of many colours and shades. The entire cup is printed in a single pass (unlike regular color separation where each color is printed separately). The gearheads must operate easily enough to synchronize ink blankets, printing plates, and glass rollers without presenting any ripple or inaccuracies that may smudge the image. In this instance, the hybrid gearhead decreases motor shaft runout mistake, which reduces roughness.
At times a motor’s capability may be limited to the main point where it requires gearing. As servo producers develop servo gear reducer better motors that can muscle applications through more difficult moves and generate higher torques and speeds, these motors require gearheads add up to the task.
Interestingly, no more than a third of the motion control systems in service use gearing at all. There are, of training course, good reasons to do so. Utilizing a gearhead with a servo engine or using a built-in gearmotor can enable the use of a smaller motor, therefore reducing the machine size and price. There are three major advantages of choosing gears, each which can enable the use of smaller sized motors and drives and for that reason lower total system cost:
Torque multiplication. The gears and quantity of the teeth on each gear develop a ratio. If a electric motor can generate 100 in-lbs of torque, and a 5:1 ratio gear head is attached to its result, the resulting torque will end up being close to 500 in-lbs.
When a motor is running at 1,000 rpm and a 5:1 ratio gearhead is mounted on it, the speed at the output will be 200 rpm. This speed reduction can improve system functionality because many motors do not operate efficiently 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 challenging because the motor tends to cog. The variable resistance of the stone being ground also hinders its ease of turning. By adding a 100:1 gearhead and letting the engine run at 1,500 rpm, the engine and gear mind provides smooth rotation as the gearhead output provides a more constant pressure with its output rotating at 15 rpm.
Inertia matching. Servo motors generate more torque in accordance with frame size because of lightweight components, dense copper windings, and high-energy magnets. The effect 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 engine to the inertia of the strain can enable the use of a smaller motor and outcomes in a more responsive system that is easier to tune.