Bosch rexroth A4VSO 10 Series User Manual

RE 92050-01-X-B2/2019-08-23, BoschRexrothAG
7 Axial piston variable pump | A4VSO Series 10, 11 and 30
Working pressure range
Working pressure range
Pressure atworking port B Definition
Nominal pressure p
nom
350bar abs. The nominal pressure corresponds tothe maximum design pressure.
Maximum pressure p
max
400bar abs. The maximum pressure corresponds tothe maximum working pressure within
asingle operating period. The sum ofthe single operating periods must not
exceed the total operating period (maximum number ofcycles: approx. 1million).
Single operating period 1s
Total operating period 300h
Minimum pressure (high-pressure side) 15bar abs. Minimum pressure onthe high-pressure side (B) which isrequired inorder
toprevent damage tothe axial piston unit. The minimum pressure depends
onthe rotational speed and the swivel angle.
Rate ofpressure change R
Amax
16000bar/s Maximum permissible pressure build-up and reduction speed during apressure
change across the entire pressure range.
Pressure atsuction portS (inlet)
Minimum pressure p
Smin
Standard 0.8bar abs. Minimum pressure atsuction port S (inlet) which isrequired toprevent damage
tothe axial piston unit. The minimum pressure depends onthe rotational speed
and displacement ofthe axial piston unit.
Maximum pressure p
Smax
30bar abs.
Case pressure atport T, K
1
, K
2
, R(L)
Maximum pressure p
Lmax
4bar abs. The permissible leakage pressure (case pressure) depends onthe rotational
speed. The parameters are reference values; under certain operating conditions,
restrictions may berequired.
Pressure peaks p
Lpeak
6bar abs. t<0.1s
▼ Rate ofpressure change R
Amax
p
nom
∆t
∆p
Time t
Pressure p
▼ Minimum pressure (inlet)
In order to avoid damage to the axial piston unit,
aminimum pressure must be guaranteed at the
suctionport S (inlet).
1.0
0.9
1.0
0.8
0.5
n n
nom
0.6 0.7 0.8 0.9 1.0
V
g
V
g max
Rotational speed
Inlet pressure p
abs
[bar]
Displacement
The inlet pressure isthe static supply pressure and the
minimum dynamic value, respectively, e.g. incase
ofpre-charge pressure.
Maximum permissible rotational speed n
nom
, see page8.
▼ Pressure definition
Pressure p
t
1
t
2
t
n
Single operating period
Minimum pressure (high-pressure side)
Maximum pressure p
max
Nominal pressure p
nom
Time t
Total operating period = t
1
+ t
2
+ ... + t
n
Notice
Working pressure range applies when using mineral
oil-based hydraulic fluids. Please contact usfor values
forother hydraulic fluids.

Bosch rexroth A4VSO 10 Series Specifications

General

Brand	Bosch
Model	rexroth A4VSO 10 Series
Category	Water Pump
Language	English