REXROTH液压泵PGH3-22/011RR07VU2

REXROTH 液压泵 PGH3-22/011RR07VU2
PGH3-3X/011RR07VU2
The hydraulic oil variable displacement pump A10VSO is suitable for HLP designed according to DIN 51524 for mineral oil.
Application instructions and requirements: You can obtain the following data sheet for hydraulic oil from before the project plan:
90220: Mineral oil based hydraulic oil and related hydrocarbons? 90221: Environmentally friendly hydraulic oil? 90222: Flame retardant, anhydrous hydraulic oil (HFDR/HFDU) (allowable technical data see data sheet 90255) 90223: Flame retardant, aqueous hydraulic oil (HFAE, HFAS, HFB, HFC).
Note that the axial piston unit is suitable for use with HF hydraulic oil containing water. View the execution of 'E'.
Viscosity and temperature of hydraulic oil
Shaft seal viscosity temperature 3) Note
Cold start maximum ≤ 1600mm? / s NBR2）θSt≥? 40 ° C t ≤ 3 minutes, no load (p ≤ 50 bar), n ≤ 1000 min-1
Allowable temperature difference between axial piston units
The hydraulic oil in the system is 25K larger.
Filter hydraulic oil
The purity level can be improved through finer filtration
Hydraulic oil extends the service life of the axial piston unit.
At least the purity level meets ISO 4406 20/18/15.

REXROTH 液压泵 PGH3-22/011RR07VU2

Types of commonly used hydraulic pumps:
1. According to whether the flow rate can be adjusted, it can be divided into variable displacement pumps and quantitative pumps. The output flow rate that can be adjusted according to needs is called a variable pump, and the flow rate that cannot be adjusted is called a quantitative pump.
2. According to the commonly used pump structures in hydraulic systems, there are three types: gear pumps, vane pumps, and plunger pumps.
Gear pump: Small in size, simple in structure, not strict in oil cleanliness requirements, and relatively cheap in price; But the pump shaft is subjected to unbalanced force, severe wear, and significant leakage.
Vane pumps: divided into double acting vane pumps and single acting vane pumps. This type of pump has uniform flow rate, smooth operation, low noise, higher working pressure and volumetric efficiency than gear pumps, and a more complex structure than gear pumps.