Addressing semiconductor applications that include precision wafer processing and inspection, the ABS2000 high speed air-bearing spindles have low inherent inertia and high torque output, making them capable of extremely high speeds and accelerations. Balanced to ISO 1940 G 0.4 tolerances, the unit's labyrinth-type sealing minimizes particle migration from the spindle, resulting in certification for Class 1 clean-room operation. Without cooling fins or external cooling, the motor produces more than 0.25 N-m (38 oz-in) of continuous torque. By directly coupling the motor and rotary encoder to a common shaft, the unit achieves a velocity ripple of less than 0.1 percent, an asynchronous error motion of less than 20 nm, and total error motion of less than 100 nm. Spindle resolution can be as high as 0.05 arc sec, when coupled to Aerotech's A3200 controller and Npaq drive rack. For more information on Aerotech ABS2000 Air-Bearing Spindles, go to http://rbi.ims.ca/4925-508.
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Thanks to embedded electronics, medical devices are getting smaller and smarter than ever. Pacemakers and implantable defibrillators are now able to call physicians. MRIs, CT scanners, and ultrasound machines are gaining mobility. And the venerable Band-Aid may soon be able to detect illnesses ranging from fevers to heart arrhythmias. On February 21, join Design News senior editor Charles Murray for a wide-ranging discussion, "Embedded Angles for Medical Products," which will explore the latest developments in medical electronics. The discussion will examine advances in medical device technology and offer an inside look at the embedded electronics behind it.
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