High Speed Hydraulic Motor

[Tiburontropic]

I am looking for a high speed Hydraulic motor that is capable of 100,000 RPM. Maximum size for the motor is 4"OD and 6"long. I can not locate a source for these type of motors. If anyone could help, I would be grateful.

 

[dunewambo]

What is the application? What is your power requirement 100 000 RPM? Is there a pressure limitation?

dunewambo

 

[butelja]

I cannot imagine any hydraulic motor that turns anywhere near this fast. Have you considered a pneumatic turbine motor? How about brushless DC motor? Also, as the previous poster asked, what is the power requirement?

 

[butelja]

You wouldn't happen to be trying to drive a turbocharger compressor using your power steering pump and a hydraulic motor would you?

 

[turboengineer]

100,000 PRM for a hydraulic motor does seem rather fast. I've seen them as high as 20,000, so while I'm not saying that there is not a vendor out there that can help (I'd call Eaton Aerospace and Parker). How about mating a lower speed motor and a gearbox? I've had to do that just ot get 120 Hp at 2500 RPM. If anybody knows where I can find a 2500 RPM, 129 Hp motor that weights less then 50 lbs let me know!

Tim, TurboEngineer

 

[automatic2]

No vanes or pistons at that speed. Churning would likely give you substantial temperature rise. I'd look at impinging a fluid stream against a spur gear or similar for speed. Not much torque, but maybe enough for a centrifugal compressor.

 

[sreid]

An air turbine would work. Also there are Brushless DC or induction motors that can run those RPM's. If that's an option I can suggest sources.

 

[dicksewerrat]

I've seen pneumatic motors run up to 35,000 but nothing higher that i know about. These are in the neighborhood of 1-2 HP. Torque is low though.

 

[unclesyd]

Here are a couple of interesting site of very high RPM motors.

The first website is for a 400,000 RPM engraver of which I have 2.

http://www.turbocarver.com/techspecs/body_techspecs.html

This website is for a 400,000 RPM turbine for a Cryo-Cooler for the Hubble.

http://hubble.nasa.gov/ncs-story/event-01.php

This is the website of the people that developed the above turbine.

http://www.creare.com/services/fluid/powerconverters.html

 

[EdDanzer]

A company makes a hydraulic turbine for turbocharger drive assistance. You may be able to fine them through the SAE web site.

 

[Cockroach]

I'm not too sure of commerical availability of some of this product, Baldor has been rather good with specification I've needed in the past. I'll plug them.

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada