AC Servo Spindle for PM25 Mill, DMM DYN4, Initial Mounting

AC Servo Spindle for PM25 Mill, DMM DYN4, Initial Mounting

An AC servo motor (DMM Tech DYN4) replaces the stock BLDC spindle motor on a LinuxCNC retrofitted Precision Matthews PM-25MV milling machine. Video shows 3D printed motor mount, keyway broaching on a lathe, and initial testing. Second video will be of the aluminum mount, timing belt and pulleys, and the electrical. 3D printing motor mounts could bootstrap a spindle motor replacement in an emergency. Checkout part two to learn if the 3D printed parts stand up to milling forces.

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