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<http://schema.org/description>
"The EC4 from maxon motor is a 4-mm-diameter brushless DC motor and gearhead for miniature pumps, surgical robots, diagnostic devices, endoscopes and other miniaturization applications.   To overcome the low output power found with microdrives of this size, the company increased its performance by using the latest winding technology, along with the most powerful magnets available. The motor comes in two lengths: a short version with 0.5-W nominal power or a long version with 1-W nominal power.   The speed/torque gradient of the EC4 is 50,000 rpm mNm–1 with a continuous torque of 0.4 mNm. There are options on the windings and encoders as well as various reduction ratios on the new 4-mm planetary gearhead."
<https://www.photonics.com/Products/DC_Motor_and_Gearhead/pr53661>