As servo technology has evolved-with manufacturers generating smaller, yet more powerful motors -gearheads have become increasingly essential partners in motion control. Locating the optimum pairing must take into account many engineering considerations.
• A servo engine operating at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the engine during operation. The eddy currents in fact produce a drag drive within the engine and will have a larger negative impact on motor performance at lower rpms.
• An off-the-shelf motor’s parameters may not be ideally suited to run at a minimal rpm. When an application runs the aforementioned engine at 50 rpm, essentially it isn’t using all of its offered rpm. Because the voltage constant (V/Krpm) of the engine is set for a higher rpm, the torque continuous (Nm/amp)-which is directly related to it-is definitely lower than it requires to be. As a result, the application needs more current to operate a vehicle it than if the application form had a motor particularly designed for 50 rpm. A gearhead’s ratio servo motor gearbox reduces the motor rpm, which is why gearheads are sometimes called gear reducers. Using a gearhead with a 40:1 ratio,
the motor rpm at the input of the gearhead will be 2,000 rpm and the rpm at the output of the gearhead will be 50 rpm. Operating the motor at the higher rpm will enable you to avoid the concerns

Servo Gearboxes provide freedom for just how much rotation is achieved from a servo. Many hobby servos are limited by just beyond 180 degrees of rotation. Most of the Servo Gearboxes use a patented exterior potentiometer so that the rotation quantity is in addition to the gear ratio set up on the Servo Gearbox. In such case, the small gear on the servo will rotate as many times as necessary to drive the potentiometer (and hence the gearbox output shaft) into the position that the signal from the servo controller demands.
Machine designers are increasingly turning to gearheads to take advantage of the latest advances in servo engine technology. Essentially, a gearhead converts high-rate, low-torque energy into low-speed, high-torque output. A servo electric motor provides highly accurate positioning of its result shaft. When both of these products are paired with one another, they promote each other’s strengths, offering controlled motion that is precise, robust, and dependable.

Servo Gearboxes are robust! While there are high torque servos in the marketplace that doesn’t suggest they can compare to the load capability of a Servo Gearbox. The small splined output shaft of a normal servo isn’t long enough, huge enough or supported well enough to handle some loads despite the fact that the torque numbers appear to be suitable for the application. A servo gearbox isolates the strain to the gearbox result shaft which is supported by a set of ABEC-5 precision ball bearings. The external shaft can withstand severe loads in the axial and radial directions without transferring those forces to the servo. In turn, the servo runs more freely and can transfer more torque to the output shaft of the gearbox.