Smoothness and lack of ripple are crucial for the printing of elaborate color pictures on reusable plastic-type material cups offered by fast-food chains. The colour image comprises of an incredible number of tiny ink spots of many colours and shades. The entire cup is printed in a single pass (unlike regular color separation where each color is usually imprinted separately). The gearheads must run efficiently enough to synchronize ink blankets, printing plates, and cup rollers without introducing any ripple or inaccuracies that may smudge the picture. In cases like this, the hybrid gearhead decreases motor shaft runout mistake, which reduces roughness.
Sometimes a motor’s capability could be limited to the point where it needs gearing. As servo manufacturers develop more powerful motors that can muscle applications through 
more complicated moves and create higher torques and speeds, these motors need gearheads equal to the task.
Interestingly, no more than a third of the motion control systems in service use gearing at all. There are, of program, reasons to do so. Using a gearhead with a servo electric motor or using a built-in gearmotor can enable the use of a smaller motor, thereby reducing the system size and cost. There are three primary advantages of going with gears, each of which can enable the usage of smaller motors and drives and for that reason lower total system cost:
Torque multiplication. The gears and number of teeth on each gear produce a ratio. If a motor can generate 100 in-pounds of torque, and a 5:1 ratio equipment head is mounted on its output, the resulting torque will be close to 500 in-lbs.
Whenever a motor is running at 1,000 rpm and a 5:1 ratio gearhead is attached to it, the rate at the output will be 200 rpm. This speed decrease can improve system performance 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 velocity makes turning the grinding wheel tough because the motor tends to cog. The variable level of 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 in accordance with frame size because of lightweight materials, dense copper windings, and high-energy magnets. The result is better inertial mismatches between servo motors and the loads they want to control. The usage of a gearhead to better match the inertia of the motor to the inertia of the strain can enable the use of a smaller engine and outcomes in a far more responsive system that’s easier to tune.
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