As servo technology has evolved-with manufacturers producing smaller, yet more powerful motors -gearheads have become increasingly essential companions in motion control. Finding the optimal pairing must take into account many engineering considerations.
• A servo electric motor running at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the electric motor during operation. The eddy currents actually produce a drag drive within the engine and will have a larger negative effect on motor efficiency at lower rpms.
• An off-the-shelf motor’s parameters might not be ideally suited to run at a low rpm. When an application runs the aforementioned motor at 50 rpm, essentially it is not using all of its obtainable rpm. As the voltage continuous (V/Krpm) of the engine is set for a higher rpm, the torque constant (Nm/amp)-which is directly linked to it-is definitely lower than it requires to be. Because of this, the application requirements more current to operate a vehicle it than if the application form had a motor specifically created for 50 rpm. A gearhead’s ratio reduces the electric motor rpm, which is why gearheads are sometimes called gear reducers. Utilizing 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 bigger rpm will allow you to avoid the concerns
Servo Gearboxes provide freedom for just how much rotation is achieved from a servo. Most hobby servos are limited to 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 equipment ratio set up on the Servo Gearbox. In this kind of case, the small equipment on the servo will rotate as many times as necessary to drive the potentiometer (and therefore the gearbox result shaft) into the position that the transmission from the servo controller calls for.
Machine designers are increasingly embracing gearheads to take advantage of the most recent advances in servo motor technology. Essentially, a gearhead converts high-acceleration, low-torque energy into low-speed, high-torque result. A servo engine provides extremely accurate positioning of its result shaft. When these two gadgets are paired with one another, they enhance each other’s strengths, providing controlled motion that is precise, robust, and dependable.
Servo Gearboxes are robust! While there are high torque servos out there that doesn’t suggest they are able to compare to the load capability of a Servo Gearbox. The small splined result shaft of a regular servo isn’t long enough, huge enough or supported sufficiently to take care of some loads even though the torque numbers appear to be appropriate for the application. A servo gearbox isolates the load to the gearbox output shaft which is backed by a pair of ABEC-5 precision ball bearings. The exterior shaft can withstand extreme 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.
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