Pump RPM recommendations

[James Eric]

This is the pump that I own:

Specifications



Rated pressure: 2900psi.
Displacement .3759 cu. In/rev
Shaft: 1/2" keyed.
Ports: SAE 3/4-16 inlet: 9/16-18 outlet.
Rated RPM: 2000, Max RPM 4000
Part Number CB1A-F6SA

Are there any advantages or dis-advantages to running the pump at 2720 RPM in stead of 2000 RPM?

I am using it to power a Danco loader on a cub cadet 1250 tractor. My target lifting capacity is 400-500 pounds.

2040 RPM = 3.31 GPM
2720 RPM = 4.42 GPM

I plan to use 3/8" lines and run the PSI between 1200-1400.

What do you think?

Thanks,

James

 

[SSdoxie]

Pump speed will only change the max speed cylinders move. Does not affect the pressure (lift capacity).

 

[James Eric]

Thanks. Maybe I should have been clearer with my questions.

1. Will the increased speed shorten the life of the pump?
2. Is the increased GPM flow worth the extra RPM's based on my target lifting goals?

James

 

[oldnslo]

As long as you don't cavitate the pump inlet there would be very little change in life expectancy.

Recommended max flow rate for suction hoses is 4 feet per second. To get this flow rate you would need a minimum of 5/8" ID hose for the inlet.

3/8" hose is good for about 1.3 GPM at 4 FPS.

Roy

 

[James Eric]

Thanks. That is very helpful. I will use a larger suction line.