Servo gearheads provide mechanical benefit by multiplying 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 make use of today gearboxes while servo motors becoming more powerful and more complex? The gearboxes are used in many instances in combination with a servo engine, for example because they have low backlash and 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 through to the gearboxes.
Technically translated tis methods to follow or execute a command. A servo motor follows the (complex) job given to him.

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

The rotation frequency of the servo motor and gearbox actuator is returned by the resolver or encoder. This is capable as well as the rotational quickness, also to determine the position of the rotor and the direction of rotation. The servo amplifier compares the established rotational frequency with the measured rotational frequency. Right now the servo amplifier can drive the actuator to the desired values.
Interesting, AC Servo Motors haven’t any significant disadvantages more! So, why would you utilize a gearbox?
This has the next reasons:

If you prefer a suprisingly low speed, possibly in mixture with an increased torque.
If you want high torque. (Actuators with high torque can be found, however they are exponentially more costly compared to the smaller servomotors)
Inertia matching, in order to prevent that the strain determines the behaviour of the electric motor.
In order to absorb the high radial or axial forces of the application form.
If you want to go “nearby” otherwise the servomotor sticks out the application. Gearboxes can be found in right-angled versions.
Baldor’s GBSM-series of low backlash, servo motor rated gearheads, attach easily and directly onto AC brushless servo motors to supply industrial motion control tools with torque multiplication and proper inertial matching. These gearheads are made for servo applications needing precision, durability, and long trouble-free operation.