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February 28, 2020

When a conventional planetary gearhead is mounted to a electric motor, 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 easily. Also, gear life can be shortened. These alignment adjustments require skills that are not normally available in the field.
Achieving a more substantial speed reduction ratio takes a smaller sun equipment diameter (or an exceptionally large ring equipment). This smaller sun equipment is usually integral with its shaft, which must be smaller as well, thereby reducing its power and its torque or load capability.

Various kinds gear trains, including those with planetary gears, are commonly used to acquire this maximum reduction ratio. Planetary equipment trains offer high stiffness and low backlash (needed for accurate operation), plus even load distribution (to obtain optimum torque). Some planetary versions combine external-tooth pinion-and-gear sets with planetary equipment sections to simplify installation and boost speed. These hybrid gearheads are explained later.
A basic planetary gearhead has some limitations regarding ease of installation, load capacity, and speed, which are related to the sun gear.

As a rule, the designer usually obtains the the best speed reduction ratio by matching the inertia of the engine 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 need a servo drive – this uses the opinions data to exactly control the position of the motors path and rotation distance.
Cone Drive’s stainless steel precision motion gearboxes are created for sterile manufacturing conditions. The product’s smooth surface area and curved contour permits easy cleaning and bacteria-free surfaces, ideal for food processing and pharmaceutical applications. The product is designed and rated to IP69k offering maximum security against contaminant ingress as well as leak free operation.
Servomotor selection usually starts with the designer wanting to reduce the motor size by using a gearbox to lessen speed and enhance torque. Speed decrease allows quick acceleration and deceleration of huge loads using a small, less costly motor.

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