-dual spindles run by maxon 50 / 5 brushless dc drivers running maxon brushless dc motors with encoders. The spindle are differently geared for different RPMS, so one was a fast(fine small tool) and a slow (course, larger tool). I do not know the exact model of the motors, but I know the drivers will run up to 125,000 rpm! I doubt the motors & spindle are built for that, but it would not surprise me if these spindle ran in the 30k+ range.
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