When a conventional servo motor and gearbox planetary gearhead is mounted to a motor, the sun gear must be aligned to compensate for runout error of the servomotor shaft. Without proper alignment, load is usually unevenly distributed over the planetary gears and the drive teach operates less smoothly. Also, gear life could be shortened. These alignment changes require skills that are not normally available in the field.
Achieving a larger speed reduction ratio takes a smaller sun equipment diameter (or an exceedingly large ring equipment). This smaller sun equipment is usually integral using its shaft, which must be smaller aswell, thereby reducing its strength and its torque 
or load capacity.
Various kinds gear trains, including those with planetary gears, are commonly used to obtain this optimum reduction ratio. Planetary equipment trains provide high stiffness and low backlash (necessary for accurate operation), plus also load distribution (to acquire maximum torque). Some planetary versions combine external-tooth pinion-and-gear sets with planetary equipment sections to simplify installation and boost swiftness. These hybrid gearheads are referred to later.
A basic planetary gearhead has several limitations regarding ease of installation, load capacity, and speed, all of which are related to sunlight gear.
Generally, the designer usually obtains the maximum speed reduction ratio by matching the inertia of the engine and gearbox with the inertia of the driven load. This inertia complementing minimizes power loss in the motor, which makes it run more efficiently.
Servo motors deliver precise control of position, velocity, and acceleration in the closed-loop systems of servomechanisms. Servo motors require a servo drive – this uses the feedback data to exactly control the position of the motors direction and rotation distance.
Cone Drive’s stainless precision movement gearboxes are created for sterile manufacturing environments. The product’s smooth surface area and curved contour permits easy cleaning and bacteria-free surfaces, perfect for meals processing and pharmaceutical applications. The product is designed and rated to IP69k providing maximum safety against contaminant ingress along with leak free operation.
Servomotor selection usually begins with the designer seeking to reduce the motor size by using a gearbox to reduce speed and enhance torque. Speed reduction allows fast acceleration and deceleration of huge loads using a small, less costly motor.