Hydraulic turbine motor 5HP 5,000 RPM
Hydraulic turbine motor 5HP 5,000 RPM
(OP)
I'm considering alternatives for a gear motor driving a fan to improve durability. Production volume is perhaps 6,000 units anually. Power source is an agricultural tractor. I'm not intimately involved with this issue so I don't have all the details; nor do I know much about hydraulics (yet) so please bear with me on this question:
It seems to me that a turbine would run very well at high speeds, have fewer parts and less critical machining tolerances. I googled a bit and found some discussions about hydroelectric powerplant turbines but nothing about small motors such as 5 horsepower and 5000 RPM using incompressible fluid power, say 1500psi. Is there some physical reason this can't be done? Does such a device exist commercially? What would such a turbine look like and how large would it be? Any links to information?
Thanks.
It seems to me that a turbine would run very well at high speeds, have fewer parts and less critical machining tolerances. I googled a bit and found some discussions about hydroelectric powerplant turbines but nothing about small motors such as 5 horsepower and 5000 RPM using incompressible fluid power, say 1500psi. Is there some physical reason this can't be done? Does such a device exist commercially? What would such a turbine look like and how large would it be? Any links to information?
Thanks.





RE: Hydraulic turbine motor 5HP 5,000 RPM
A vibrator's load profile is very similar to a fan, pretty much the square of speed, (until you get into the speeds you don't want to run the fan.)
BK
RE: Hydraulic turbine motor 5HP 5,000 RPM
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Hydraulic turbine motor 5HP 5,000 RPM
http://www.baymachinedesign.com
RE: Hydraulic turbine motor 5HP 5,000 RPM
http://www.parker.com/ead/cm1.asp?cmid=262
RE: Hydraulic turbine motor 5HP 5,000 RPM
My first reaction is to use a belt drive to reduce motor speed. And, of course a gearbox would work well too. The reason I asked my turbine question is because I thought it might offer a lower cost solution since belt and gear drives both will add cost.
Thanks. Any other ideas? I recall (25 years ago!) some sort of machine tool "speeder" that used spherical elements but I can't find reference to it.
RE: Hydraulic turbine motor 5HP 5,000 RPM
Any links where I might find out more about what's inside this motor?
http:
RE: Hydraulic turbine motor 5HP 5,000 RPM
It won't be a serviceable item, so I doubt the workshop manual will cover the internals.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Hydraulic turbine motor 5HP 5,000 RPM
BK
RE: Hydraulic turbine motor 5HP 5,000 RPM
Thanks.
RE: Hydraulic turbine motor 5HP 5,000 RPM
RE: Hydraulic turbine motor 5HP 5,000 RPM
It's just a different approach that may offer some insight.
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Hydraulic turbine motor 5HP 5,000 RPM
Hydraulic motors offer a rugged, self-lubricated, self-cooled, high power density package for agriculture applications. The motors are usually of the vane, gear, or piston type, not turbines as in gas turbines. Upscale industrial equipment use the hydraulic fans quite often. Many tractors have hydraulic PTO's built in. The 5000 rpm may be a bit high for a fan, but I think you are on the right track.
Punch in "hydraulic fan drive" on your google.
RE: Hydraulic turbine motor 5HP 5,000 RPM
Click on view catalogue for M2/M4/VCR2 HIGH SPEED MOTORSat the site below
http://www
RE: Hydraulic turbine motor 5HP 5,000 RPM
RE: Hydraulic turbine motor 5HP 5,000 RPM
Anyone know what's inside the Valeo HDFS motor? The external geometry looks different from a gerotor design.
http://
RE: Hydraulic turbine motor 5HP 5,000 RPM
If the Valeo is not gerotor it could internal gear.
RE: Hydraulic turbine motor 5HP 5,000 RPM
What limits the return pressure to 10 psi on a gear motor? Is it seal leakage or something else?