Portescap (West Chester, PA) has introduced the P760 series thin disc magnet motor that provides high torque and acceleration up to 5,000 rpm. The motor combines the disc magnet technology with an optimization of the number of pole pairs. The disc magnet technology provides very low inertia, and the optimization of pole pairs balances the iron losses versus the joule losses. The high-speed stepper motor can deliver a boosted torque of 0.7 Nm with inertia as low as 17E-7 Kgm2. The closed loop motor is suited for applications where rapid changes in acceleration and direction of rotation are required in the shortest possible time, such as in medical XY tables and robotics.
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