When a conventional planetary gearhead is mounted to a engine, the sun gear should be aligned to pay for runout error of the servomotor shaft. Without proper alignment, load can be unevenly distributed over the planetary gears and the drive train operates less smoothly. Also, gear life could be shortened. These alignment changes require skills that are not normally obtainable in the field.
Achieving a more substantial speed reduction ratio requires a smaller sun equipment diameter (or an exceptionally large ring equipment). This smaller sun equipment is usually integral using its shaft, which should be smaller as well, thereby reducing its strength and its torque or load capability.

Several types of gear trains, including people that have planetary gears, are generally used to acquire this optimum reduction ratio. Planetary equipment trains offer high stiffness and low backlash (needed 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 set up and boost acceleration. These hybrid gearheads are referred to later.
A simple planetary gearhead has a few limitations regarding simple installation, load capacity, and speed, which are related to the sun gear.

Generally, the servo reducer designer usually obtains the maximum speed reduction ratio by matching the inertia of the electric motor and gearbox with the inertia of the driven load. This inertia coordinating minimizes power reduction in the motor, making it run more efficiently.

Servo motors deliver precise control of placement, velocity, and acceleration in the closed-loop systems of servomechanisms. Servo motors require a servo drive – this uses the feedback data to specifically control the positioning of the motors direction and rotation distance.
Cone Drive’s stainless steel precision motion gearboxes are designed for sterile manufacturing environments. The product’s smooth surface and curved contour allows for easy cleaning and bacteria-free surfaces, ideal for food digesting and pharmaceutical applications. The merchandise is designed and ranked to IP69k providing maximum protection against contaminant ingress and also leak free operation.
Servomotor selection usually begins with the designer wanting to reduce the electric motor size by utilizing a gearbox to reduce speed and increase torque. Speed reduction allows fast acceleration and deceleration of large loads using a small, less costly motor.