As servo technology has evolved-with manufacturers making smaller, yet better motors -gearheads have become increasingly essential partners in motion control. Finding the ideal 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 electric motor during operation. The eddy currents actually produce a drag push within the engine and will have a larger negative impact on motor functionality at lower rpms.
• An off-the-shelf motor’s parameters may not be ideally suitable for run at a low rpm. When an application runs the aforementioned electric motor at 50 rpm, essentially it isn’t using most of its available rpm. Because the voltage constant (V/Krpm) of the motor is set for a higher rpm, the torque constant (Nm/amp)-which is certainly directly related to it-is definitely lower than it needs to be. Because of this, the application needs more current to drive it than if the application had a motor specifically created for 50 rpm. A gearhead’s ratio reduces the motor rpm, which explains 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 engine at the higher rpm will allow you to avoid the concerns

Servo Gearboxes provide freedom for how much rotation is achieved from a servo. The majority of hobby servos are limited to just beyond 180 degrees of rotation. Many of the Servo Gearboxes make use of a patented external potentiometer so that the rotation amount is independent of the gear ratio installed on the Servo Gearbox. In this kind of case, the small gear on the servo will rotate as much times as essential to drive the potentiometer (and hence the gearbox output shaft) into the placement that the signal from the servo controller calls for.
Machine designers are increasingly embracing gearheads to take benefit of the latest advances in servo engine technology. Essentially, a gearhead converts high-velocity, low-torque energy into low-speed, high-torque result. A servo engine provides extremely accurate positioning of its result shaft. When these two devices are paired with one another, they enhance each other’s strengths, providing controlled motion that’s precise, robust, and reliable.

Servo Gearboxes are robust! While there are high torque servos in the marketplace that doesn’t indicate they are able to compare to the strain capability of a Servo Gearbox. The tiny splined result shaft of a normal servo isn’t long enough, large enough or supported sufficiently to take care of some loads despite the fact that the torque numbers appear to be suitable for the application. A servo gearbox isolates the load to the gearbox output shaft which is backed by a set of ABEC-5 precision ball bearings. The external shaft can withstand extreme loads in the axial and radial directions without transferring those forces on to the servo. Subsequently, the servo operates more freely and can transfer more torque to the result shaft of the gearbox.

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