As servo technology has evolved-with manufacturers making smaller, yet more powerful motors -gearheads have become increasingly essential partners in motion control. Finding the ideal pairing must take into account many engineering considerations.
• A servo electric motor operating at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the engine during operation. The eddy currents actually produce a drag drive within the motor and will have a larger negative impact on motor functionality at lower rpms.
• An off-the-shelf motor’s parameters might not be ideally suited to run at a minimal rpm. When an application runs the aforementioned electric motor at 50 rpm, essentially it isn’t using all of its obtainable rpm. As the voltage constant (V/Krpm) of the electric motor is set for a higher rpm, the torque constant (Nm/amp)-which is usually directly linked to it-is certainly lower than it requires to be. Because of this, the application needs more current to drive it than if the application had a motor particularly made for 50 rpm. A gearhead’s ratio reduces the electric motor rpm, which explains why gearheads are occasionally called gear reducers. Using a gearhead with a 40:1 ratio,
the engine 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 engine at the higher rpm will enable you to avoid the concerns
Servo Gearboxes provide freedom for how much rotation is achieved from a servo. Most hobby servos are limited to just beyond 180 examples of rotation. Many of the Servo Gearboxes utilize a patented external potentiometer so that the rotation quantity is independent of the equipment ratio set up on the Servo Gearbox. In such case, the small gear on the servo will rotate as much times as necessary to drive the potentiometer (and therefore the gearbox output shaft) into the placement 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-speed, low-torque energy into low-speed, high-torque result. A servo motor provides highly accurate positioning of its result shaft. When both of these gadgets are paired with one another, they enhance each other’s strengths, providing controlled motion that’s precise, robust, and dependable.
Servo Gearboxes are robust! While there are high torque servos on the market that doesn’t indicate they are able to compare to the strain capacity of a Servo Gearbox. The tiny splined result shaft of a normal servo isn’t lengthy enough, large enough or supported well enough to handle some loads even though the torque numbers look like suitable for the application. A servo gearbox isolates the strain to the gearbox output shaft which is backed by a set of ABEC-5 precision ball bearings. The exterior 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 is able to transfer more torque 
to the output shaft of the gearbox.