hydraulic motor for chute rotation

[Grant052810]

I have researched countless hours on the topic and I finally ordered some parts tonight. I ordered a Brevini Hydraulic Motor. The description is as follows...

2.99 cu in Brevini FH0049AS100AAAA HYDRAULIC MOTOR
New. Low speed high torque motor that incoporates an industry proven spool valve design and high performance gerotor power element. Brevini model# FH0049AS100AAAA

SPECIFICATIONS
Brand Brevini
Model FH0049AS100AAAA
Family FH Series
Displacement 2.99 cu. in. / rev.
Motor Type Gerotor
Rotation Reversible
Pressure:
1900 PSI cont.
2400 PSI int.
Torque:
708 in-lbs. cont.
888 in-lbs. int.
Speed:
1220 RPM cont.
1530 RPM int.
Flow:
15 GPM cont.
20 GPM int.
Mount 2 bolt SAE A
Pilot Mount Size 3.25"
Shaft 1" dia. x 1.89" long w/ 1/4" keyway
Ports SAE 10
Case Drain None
Size 5.24" x 5.11" x 3.81"
Shpg. 15 lbs.
I hope this will work as intended. Any ideas, questions or concerns please let me know because I have little experience with hydraulics and this has been racking my brain for quite some time. Thanks guys.

 

[3Ts]

I assume this is going on a snow blower. What are you driving the motor with? I.e. what is the pressure and flow rate of your pump? 1220 RPM for a chute rotator seems rather fast, I assume you are gearing it down (a lot).

 

[Grant052810]

8.6 gpm pump flow on my tractor. I plan on using 1/4” lines from the tractor to the motor.

 

[BertZegers]

I hope this will work as intended. Any ideas, questions or concerns please let me know because I have little experience with hydraulics and this has been racking my brain for quite some time. Thanks guys.[/QUOTE]

Tell us first how it is intended to work.

 

[radios1]

if you used a 100:1 reduction, you'd get 12.2 rpm, which is more like it.. else it would just be spraying the snow in a circle at 1,220 rpm.. maybe something like this would work. NEMA23 Stepper Motor Planetary Gearbox 3:1 4:1 1:1 4pc x Screws High torque | eBay

 

[4570Man]

if you used a 100:1 reduction, you'd get 12.2 rpm, which is more like it.. else it would just be spraying the snow in a circle at 1,220 rpm..

It’s 1200 rpm at 15 gpm. His tractor pump flow is 8 gpm. The rear remote flow is probably less. And then the valve has more options than wide open. Add a flow restriction if it can’t be controlled precise enough. Then add the easy to achieve chain reduction on the drive and it’ll work fine. He doesn’t need anything close to 100/1 reduction.

 

[Grant052810]

My plan is to mount the motor and run a 40 chain around the sprocket on the motor which will be a 40 pitch 16 tooth sprocket. Then the chain will run 3/4 maybe 7/8 around the chute and connect to a plate welded to the chute. Erskine does this with their chutes and it seems to be the easiest way for my set up. I will be using 1/4” lines from the remotes to the hydraulic motor. I’m still not sure if I will need to further restrict it or not.

 

[Dave M7040]

An easy way to gain control over a hydraulic motor is with a pressure compensated flow control.

Pressure-compensated flow control valves are designed to provide a constant volume flow rate independent of the pressure drop across the valve. By contrast, non-pressure-compensated valves have a variable flow rate that changes if the pressure drop across the valve fluctuates.

This sounds complicated but it really is not.

For $100 at Northern Tool you get a valve which allows you to tailor the flow to the motor to meet your needs. You manually adjust the flow and then lock the setting in place with a simple thumb screw.

https://www.northerntool.com/shop/tools/product_200339003_200339003

Dave M7040

 

[radios1]

An easy way to gain control over a hydraulic motor is with a pressure compensated flow control.

Pressure-compensated flow control valves are designed to provide a constant volume flow rate independent of the pressure drop across the valve. By contrast, non-pressure-compensated valves have a variable flow rate that changes if the pressure drop across the valve fluctuates.

This sounds complicated but it really is not.

For $100 at Northern Tool you get a valve which allows you to tailor the flow to the motor to meet your needs. You manually adjust the flow and then lock the setting in place with a simple thumb screw.

https://www.northerntool.com/shop/tools/product_200339003_200339003

Dave M7040

very good!..