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

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Do you know why we still use today gearboxes while servo motors becoming stronger and more complex? The gearboxes are used in many instances in mixture with a servo engine, for instance because they possess low backlash and are able to handle high torque. But still we didn’t give an answer to the previous issue: why! In this post we discuss the procedure of a servo drive and translate this through to the gearboxes.
Technically translated tis methods to follow or execute a command. A servo electric motor follows the (complex) job given to him.

For industrial applications, servo motors are used in which a drive-system has to be accurate or highly powerful. The opinions to the engine is performed through a resolver (analogue sensor of rotation) or encoder (digital sensor of rotation). A servo engine is managed by a servo amplifier, perhaps with a shaft controller.

The rotation servo motor and gearbox frequency of the actuator is given back by the resolver or encoder. That is capable as well as the rotational velocity, also to look for the position of the rotor and the direction of rotation. The servo amplifier compares the established rotational frequency with the measured rotational frequency. Now the servo amplifier can drive the actuator to the desired values.
Interesting, AC Servo Motors haven’t any significant disadvantages more! Therefore, why would you use a gearbox?
This has the next reasons:

If you prefer a very low acceleration, possibly in combination with an increased torque.
If you need high torque. (Actuators with high torque are available, 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 engine.
To be able to absorb the high radial or axial forces of the application.
If you would like to go “around the corner” otherwise the servomotor sticks out the application. Gearboxes can be found in right-angled versions.
Baldor’s GBSM-series of low backlash, servo engine 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 created for servo applications needing precision, durability, and lengthy trouble-free operation.