As servo technology has evolved-with manufacturers making smaller, yet better motors -gearheads have become increasingly essential partners in motion control. Locating the optimum pairing must take into account many engineering considerations.
• A servo engine running at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the motor during operation. The eddy currents actually produce a drag power within the motor and will have a greater negative impact on motor overall performance at lower rpms.
• An off-the-shelf motor’s parameters may not be ideally suitable for run at a low rpm. When a credit card applicatoin runs the aforementioned electric motor at 50 rpm, essentially it is not using all of its available rpm. As the voltage continuous (V/Krpm) of the electric motor is set for an increased rpm, the torque continuous (Nm/amp)-which can be directly related to it-can be lower than it needs to be. Consequently, the application needs more current to operate a vehicle it than if the application form had a motor particularly made for 50 rpm. A gearhead’s ratio reduces the motor rpm, which is why gearheads are sometimes called gear reducers. Using a gearhead with a 40:1 ratio,
the electric 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 electric motor at the higher rpm will permit 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 levels of rotation. Most of the Servo Gearboxes utilize a patented exterior potentiometer to ensure that the rotation quantity is independent of the gear ratio installed on the Servo Gearbox. In such case, the small equipment on the servo will rotate as much times as essential to drive the potentiometer (and hence the gearbox output shaft) into the position that the transmission from the servo controller calls for.
Machine designers are increasingly turning to gearheads to take advantage of the latest advances in servo motor technology. Essentially, a gearhead converts high-rate, low-torque energy into low-speed, high-torque result. A servo electric motor provides highly accurate positioning of its result shaft. When both of these devices are paired with each other, they enhance each other’s strengths, offering controlled motion that is precise, robust, and servo motor gearbox dependable.
Servo Gearboxes are robust! While there are high torque servos on the market that doesn’t mean they can compare to the load capability of a Servo Gearbox. The tiny splined result shaft of a normal servo isn’t lengthy enough, huge enough or supported well enough to handle some loads despite the fact that the torque numbers seem to be suitable for the application. A servo gearbox isolates the load to the gearbox result shaft which is backed by a set of ABEC-5 precision ball bearings. The exterior 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.