These Gears Are Synched at 4,500 RPM

These three gears, rotating at 4,500 rpm, are completely in sync, and are running on an AC servo system developed by Mitsubishi Electric.

Here we’re demonstrating how even if three gears overlap like this, they can be completely prevented from interfering, by moving them with exactly the same timing. This can be done because the motors are controlled with micron-level accuracy. So, there’s no interference, even when they’re running at such high speed.