One million RPM motor  - Page 1
Forum section: electronics / general

author: chickenHeadKnob
author_rank: Super Contributor
timestamp: March 02, 2016, 11:25:52 am
content: I found this youtube. It is in french but should be easy to comprehend, of a guy who spins up magnets upto 1,000,000 rpm:https://youtu.be/RB7zzs9x5OgOf course completely useless but I found it interesting. One of his little magnets grenades.ETH Zurich claims a motor that actually can do effective work at this RPM, but I could find no video:http://www.livescience.com/3075-spin-record-set-1-million-rpm.html

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: March 02, 2016, 12:28:13 pm
content: One of them shattered holy crap.

author: hayatepilot
author_rank: Frequent Contributor
timestamp: March 02, 2016, 12:43:53 pm
content: You can buy motors with 1 megarpm and 100W:http://www.celeroton.com/en/products/motors.htmlI don't want to know the price though....They have to cost an arm and a leg.Greetings

author: ajb
author_rank: Super Contributor
timestamp: March 02, 2016, 02:16:56 pm
content: Quote from: hayatepilot on March 02, 2016, 12:43:53 pm100W at 1Mrpm, that's, what, a whopping 0.008 in*lbs ( 8 mil*lbs?) of torque? I wonder what the power input requirement is to get 100W at the shaft.

author: HAL-42b
author_rank: Frequent Contributor
timestamp: March 02, 2016, 03:17:42 pm
content: Strange the standard configuration is with ballbearings and the magnetic bearings are offered only as an option. Didn't know ballbearings could run at such speeds either. They probably don't last very long.

author: Kilrah
author_rank: Unknown
timestamp: March 02, 2016, 04:21:01 pm
content: There are model jet engines that run at 250K RPM, without the heat and hostile enfironment it doesn't sound that far-fetched that there are bearings that can take 1M RPM...

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 02, 2016, 04:33:19 pm
content: Would be cool to do it with a glass container under vacuum...

author: Unknown
author_rank: Unknown
timestamp: March 02, 2016, 04:34:45 pm
content: QuoteThis looks like a high quality genuine product, but nowhere in the datasheet does it mention operation at 1e6 rpm? The quoted operating figures are 500,000 rpm with 2 mNm torque @ 100W and 4mNm @ 200W with active cooling, still impressive. Maybe marketing getting hold of the no load max speed or something.

author: chickenHeadKnob
author_rank: Super Contributor
timestamp: March 02, 2016, 10:16:04 pm
content: Air turbine dentist drills routinely run at 100,000 or more when free running, but with almost no torque. The moment he bites into your tooth it spins down. The real trick is making a motor with grunt that doesn't dynamically disassemble itself.

author: Brumby
author_rank: Unknown
timestamp: March 02, 2016, 11:48:34 pm
content: Quote from: mikeselectricstuff on March 02, 2016, 04:33:19 pmI was thinking the same thing.

author: tautech
author_rank: Super Contributor
timestamp: March 03, 2016, 12:07:38 am
content: It's only equivalent to 16.6666.... KHz.Slow as, compared to things electronic.Quote from: Kilrah on March 02, 2016, 04:21:01 pmMagnetic levitation bearings.Most aren't aware a simple engine turbocharger runs to 150K rpm.

author: Stonent
author_rank: Super Contributor
timestamp: March 03, 2016, 12:19:35 am
content: Quote from: mikeselectricstuff on March 02, 2016, 04:33:19 pmMy thoughts exactly!

author: alho
author_rank: Contributor
timestamp: March 03, 2016, 12:28:38 am
content: Quote from: tautech on March 03, 2016, 12:07:38 amCeramic ball bearings. Zirconium dioxide or aluminium oxide also used in dentist drills mentioned earlier.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 03, 2016, 01:31:02 am
content: Quote from: Brumby on March 02, 2016, 11:48:34 pmhmmmm - I happen to have a vacuum pump somewhere....

author: HAL-42b
author_rank: Frequent Contributor
timestamp: March 03, 2016, 01:43:00 am
content: Are you guys trying to design aLondon Moment Gyroscopeor something?

author: Unknown
author_rank: Unknown
timestamp: March 03, 2016, 10:02:32 am
content: Quote from: mikeselectricstuff on March 03, 2016, 01:31:02 amMore holes in the ceiling

author: dexters_lab
author_rank: Unknown
timestamp: March 03, 2016, 10:05:29 am
content: Quote from: mikeselectricstuff on March 03, 2016, 01:31:02 am

author: joeqsmith
author_rank: Super Contributor
timestamp: March 03, 2016, 10:36:35 am
content: That's impressive! I like the cooling system too.