Smoothness and absence of ripple are essential for the printing of elaborate color images on reusable plastic cups available at fast-food chains. The colour image is made up of millions of tiny ink spots of many shades and shades. The entire glass is printed in a single complete (unlike regular color separation where each color is certainly imprinted separately). The gearheads must work smoothly enough to synchronize ink blankets, printing plates, and cup rollers without introducing any ripple or inaccuracies that may smudge the image. In this case, the hybrid gearhead reduces motor shaft runout error, which reduces roughness.
Sometimes a motor’s capability may be limited to the main point where it needs gearing. As servo producers develop better motors that can muscle mass applications through more complicated moves and generate higher torques and speeds, these motors need gearheads add up to the task.
Interestingly, only about a third of the movement control systems operating use gearing at all. There are, of program, good reasons to do so. Using a gearhead with a servo motor or using a built-in gearmotor can enable the use of a smaller motor, therefore reducing the machine size and price. There are three main advantages of going with gears, each which can enable the usage of smaller motors and drives and therefore lower total system price:
Torque multiplication. The gears and quantity of teeth on each gear make a ratio. If a engine can generate 100 in-pounds of torque, and a 5:1 ratio equipment head is mounted on its output, the resulting torque will end up being 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 rate at the output will be 200 rpm. This speed reduction can improve system performance because many motors usually do not operate efficiently at suprisingly low rpm. For example, consider a stone-grinding mechanism that requires the motor to run at 15 rpm. This slow rate makes turning the grinding wheel difficult because the motor tends to cog. The variable level of resistance of the stone being floor also hinders its ease of 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 as the gearhead output provides a more constant drive with 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 result is greater inertial mismatches between servo motors and the loads they are trying to control. The use 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 results in a far more responsive system that’s easier to tune.
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