Machine Design

Scanning for Ideas: Motor + Encoder = Fine Positioning

Edited by Stephen J. Mraz

Engineers at BEI Kimco Magnetics, Vista, Calif. (, put together an encoder equipped with a relatively large-diameter clear aperture and a motor to come up with an Integrated Motor Encoder Assembly with resolution to 0.02 arc-sec. ABEC7-Class ball bearings make the device reliable and extend its service life. Hall-based commutation lets the device work with a variety of standard motion controllers. To limit wobble, the motor/encoder features a tightly toleranced hollow shaft. According to the manufacturer, the device was made to handle high-acceleration point-to-point motion.

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