R-10 Pneumatic Rotational Stepper Motor

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The R-10 is the smallest 3-D printable pneumatic rotational stepper motor. The body measures 10 x 10 x 10 mm. Step size is 12.9° and torque 1.2 N mm at 0.4 MPa pressure. Print it with a high-resolution printer. Use a 1 mm rod for the axle in a suitable material. The gear can also be laser-cut from 2 mm material like acrylic. Laser-cut silicone seals sized 3.15 x 4.15 mm from 0.5 mm silicone rubber.    

About the author:
VincentGroenhuis
Researcher at Robotics and Mechatronics, University of Twente

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