Whenever a conventional planetary gearhead is mounted to a engine, the sun gear must be aligned to compensate for runout error of the servomotor shaft. Without proper alignment, load is definitely unevenly distributed over the planetary gears and the drive train operates less smoothly. Also, gear life can be shortened. These alignment modifications require skills that are not normally available in the field.
Achieving a more substantial speed reduction ratio takes a smaller sun gear diameter (or an exceedingly large ring equipment). This smaller sun gear 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 people that have planetary gears, are generally used to obtain this the best possible reduction ratio. Planetary equipment trains offer high stiffness and low servo reducer backlash (necessary for accurate procedure), plus actually load distribution (to acquire maximum torque). Some planetary versions combine external-tooth pinion-and-gear models with planetary equipment sections to simplify installation and boost rate. These hybrid gearheads are described later.
A basic planetary gearhead has some limitations regarding ease of installation, load capacity, and speed, which are 
related to sunlight gear.
Generally, the designer usually obtains the the best speed decrease ratio by matching the inertia of the engine and gearbox with the inertia of the driven load. This inertia coordinating 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 need a servo drive – this uses the feedback data to exactly control the positioning of the motors direction and rotation distance.
Cone Drive’s stainless steel precision movement gearboxes are designed for sterile manufacturing conditions. The product’s smooth surface and curved contour permits easy cleaning and bacteria-free surfaces, ideal for food digesting and pharmaceutical applications. The product is designed and rated to IP69k providing maximum protection against contaminant ingress and also leak free operation.
Servomotor selection usually begins with the designer seeking to reduce the engine size by using a gearbox to lessen speed and enhance torque. Speed reduction allows quick acceleration and deceleration of large loads utilizing a small, less costly motor.