A10VSO series 32 Axial piston variable Medium pressure pump , Open
circuit pumps
Hydraulic fluids
The A10VSO variable pump is designed for operation with HLP mineral
oil according to DIN 51524.
Application instructions and requirements for hydraulic fluids
should be taken from the following data sheets before the start of
project planning:
90220: Hydraulic fluids based on mineral oils and related
hydrocarbons
90221: Environmentally acceptable hydraulic fluids
90222: Fire-resistant, water-free hydraulic fluids (HFDR/HFDU)
DRF/DRS – Pressure and flow controller
In addition to the pressure controller function (see page 12), a
variable orifice (e.g. directional valve) is used to adjust the
differential pressure upstream and downstream of the orifice.
This is used to control the pump flow. The pump flow is equal to
the actual required flow by the consumer, regardless of changing
pressure levels. The pressure controller overrides the flow control
function.
Note
The DFR1 version has no connection from X to the reservoir so the
LS relief has to be incorporated into the system.
Because of the flushing function, sufficient unloading of the
X-line must also be provided.
Basic position in depressurized state:Vg max.
Setting range1) for pressure control 20 to 280 bar standard is 280
bar.
Technical data
Optimized medium pressure pump for high power machines.
Sizes 45 to 180.
Nominal pressure 280 bar.
Maximum pressure 350 bar.
Open circuit.
Features
Variable displacement pump with axial piston rotary group of
swashplate design for hydrostatic drives in open circuit.
Flow is proportional to the drive speed and displacement.
Flow can be infinitely varied by controlling the swashplate angle.
Hydrostatically unloaded cradle bearing.
Port for measurement sensor on high pressure port for all sizes
with port plate 22 and 32.
Low noise level.
Increased functional reliability.
High efficiency.
Good power to weight ratio.
Universal through drive for all sizes with port plate 22 and 32.
Optional pulsation damping.
