When a conventional planetary gearhead is mounted to a electric motor, the sun gear should 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 can be shortened. These alignment modifications require skills that aren’t normally available in the field.
Achieving a more substantial speed reduction ratio requires a smaller sun gear diameter (or an exceedingly large ring equipment). This smaller sun equipment is usually integral with its shaft, which must be smaller as well, thereby reducing its strength and its torque or load capability.
Several types of gear trains, including those with planetary gears, are generally used to acquire this the best possible reduction ratio. Planetary gear trains provide high stiffness and low backlash (necessary for accurate procedure), plus also load distribution (to acquire optimum torque). Some planetary versions combine external-tooth pinion-and-gear units with planetary equipment sections to simplify installation and boost velocity. These hybrid gearheads are defined later.
A basic planetary gearhead has several limitations regarding ease of installation, load capacity, and speed, which are related to the sun gear.
Generally, the designer usually obtains the optimum speed reduction ratio by matching the servo reducer inertia of the 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 position, velocity, and acceleration in the closed-loop systems of servomechanisms. Servo motors need a servo drive – this uses the feedback data to precisely control the positioning of the motors path and rotation distance.
Cone Drive’s stainless steel precision movement gearboxes are made for sterile manufacturing environments. The product’s smooth surface area and curved contour allows for easy cleaning and bacteria-free surfaces, ideal for meals processing and pharmaceutical applications. The product is designed and rated to IP69k providing maximum safety against contaminant ingress and also leak free operation.
Servomotor selection usually starts with the designer seeking to reduce the electric motor size by utilizing a gearbox to lessen speed and enhance torque. Speed reduction allows quick acceleration and deceleration of huge loads utilizing a small, less expensive motor.