5 ms·
Those dental drills are powered by an air turbine, though. Dyson (notable for their vacuums) actually have done a bunch of work pioneering high-speed electric
by grinich 13y ago
Those dental drills are powered by an air turbine, though.
Dyson (notable for their vacuums) actually have done a bunch of work pioneering high-speed electric motors. The Dyson Digital Motor is awesome and runs at +100k rpm. They're used in the "Airblade" hand dryer.
http://www.dyson.com/vacuums/ddm.aspx http://www.dyson.com/vacuums/ddm.aspx
- mercuryrising 13y agoThe dyson motor doesn't show any sizes, but 100k spindle motors are not impossible to make. They're commonly used for PCB production > Some of the high performance spindle motors used on large-size mass production PCB drilling machines are capable of running at 200,000 rpm or higher. from http://www.mitspcb.com/edoc/spindle.htm http://www.mitspcb.com/edoc/spindle.htm
- grinich 13y agoIt's surprisingly large: https://www.youtube.com/watch?v=6kcGltYWz3k https://www.youtube.com/watch?v=6kcGltYWz3k