Capable of no-load speeds up to 60,000 rpm and rated for continuous output torque up to 0.9 oz-in., BI-05 Series has slotless design that eliminates magnetic cogging issues. Stator teeth are completely eliminated by forming and encapsulating entire stator winding along inside surface of back iron, resulting in zero detent torque. Overall motor construction is of 17-4, 300, and 400 series stainless steels, and 4-pole rotor is built using high-energy neodymium magnets.
This story is related to the following:Slotless Brushless DC Motors