When a conventional 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 certainly unevenly distributed over the 
planetary gears and the drive teach operates less efficiently. Also, gear life can be shortened. These alignment adjustments require skills that are not normally obtainable in the field.
Achieving a more substantial speed reduction ratio requires a smaller sun gear diameter (or an exceedingly large ring gear). This smaller sun equipment is usually integral with its shaft, which should be smaller aswell, thereby reducing its strength and its torque or load capability.
Various kinds gear trains, including those with planetary gears, are commonly used to obtain this ideal reduction ratio. Planetary gear trains offer high stiffness and low backlash (necessary for accurate operation), plus also load distribution (to obtain optimum torque). Some planetary versions combine external-tooth pinion-and-gear units with planetary gear sections to simplify installation and boost swiftness. These hybrid gearheads are described later.
A simple planetary gearhead has a few limitations regarding ease of installation, load capacity, and speed, all of which are related to sunlight gear.
Generally, the designer usually obtains the the best speed reduction ratio by matching the inertia of the electric motor and gearbox with the inertia of the driven load. This inertia matching 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 opinions data to exactly control the positioning of the motors direction and rotation distance.
Cone Drive’s stainless precision motion gearboxes are made for sterile manufacturing conditions. The product’s smooth surface area and curved contour allows for easy cleaning and bacteria-free surfaces, ideal for food processing and pharmaceutical applications. The product is designed and rated to IP69k providing maximum safety against contaminant ingress in addition to leak free operation.
Servomotor selection usually begins with the designer seeking to reduce the motor size by using a gearbox to servo motor and gearbox lessen speed and enhance torque. Speed reduction allows quick acceleration and deceleration of large loads using a small, less expensive motor.