Servo gearheads provide mechanical advantage by multiplying electric motor torque while reducing the driven load’s reflected inertia back to the motor.

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Have you any idea why we still use today gearboxes while servo motors becoming more powerful and more advanced? The gearboxes are used in many situations in mixture with a servo engine, for example because they possess low backlash and so are able to deal with high torque. But nonetheless we did not give an answer to the previous question: why! In this article we discuss the operation of a servo drive and translate this to the gearboxes.
Technically translated tis means to follow or execute a command. A servo motor follows the (complex) task given to him.

For commercial applications, servo motors are used where a drive-system needs to be accurate or highly powerful. The feedback to the engine is performed through a resolver (analogue sensor of rotation) or encoder (digital sensor of rotation). A servo motor is managed by a servo amplifier, possibly with a shaft controller.

The rotation frequency of the actuator is given back by the resolver or encoder. That is capable in addition to the rotational speed, also to determine the placement of the rotor and the path of rotation. The servo amplifier compares the arranged rotational frequency with the measured rotational frequency. At this point the servo amplifier can drive the actuator to the desired values.
Interesting, AC Servo Motors have no significant disadvantages more! Therefore, why would you utilize a gearbox?
This has the following reasons:

If you prefer a very low servo motor and gearbox velocity, possibly in mixture with a higher torque.
If you need high torque. (Actuators with high torque can be found, but they are exponentially more expensive compared to the smaller servomotors)
Inertia matching, in order to prevent that the load determines the behaviour of the motor.
To be able to absorb the high radial or axial forces of the application form.
If you would like to go “nearby” otherwise the servomotor shines the application. Gearboxes can be found in right-angled versions.
Baldor’s GBSM-series of low backlash, servo motor rated gearheads, mount easily and directly onto AC brushless servo motors to provide industrial motion control equipment with torque multiplication and proper inertial matching. These gearheads are created for servo applications needing precision, durability, and lengthy trouble-free operation.