Working Pressure Range - Bosch Rexroth A4CSG 30 Series Manual

8 A4CSG Series 30 | Axial piston variable pump

Working pressure range

Working pressure range
Pressure at working port A or B
Nominal pressure p
nom
Maximum pressure p
max
Single operating period
Total operating period
Minimum pressure (high-pressure side)
Minimum pressure (low-pressure side)
Rate of pressure change R
A max
Boost pressure
Minimum boost pressure p
Sp
Maximum static boost pressure p
Permissible pressure peaks in
boost pressure
Pressure at suction port S (version with integrated boost pump)
Minimum pressure p
S min
Maximum pressure p
S max
Control pressure for EP and HD control
Minimum required control
pressure p
St min
▼ Required low pressure depending on the
Speed ratios
Speed ratio n/n
▼ Rate of pressure change
p
nom
∆t
∆p
Time t
See also "Monitoring the operational data" on page 5
1)
Bosch Rexroth AG, RE 92105-01-X-B2/2019.08.06
350 bar
400 bar
1 s
300 h
15 bar
Speed-related
(see diagram)
16000bar/s
(at n 16 bar
)
nom
30 bar
Sp max
minimum 4 bar
maximum 40 bar
≥0.8 bar absolute
30 bar abs.
Double boost
pressure
at NG 355 +5 bar
NG250 to 500
Minimum recommended
setting (pressure
gauge reading)
shut-off limit 1)
nom
Definition
The nominal pressure corresponds to the maximum design pressure.
The maximum pressure corresponds to the maximum working pressure
within a single operating period. The sum of single operating periods must
not exceed the total operating period.
Minimum pressure on the high-pressure side (A or B) required to prevent
damage to the axial piston unit.
Minimum pressure on the low-pressure side (A or B) required to prevent
damage to the axial piston unit. The low pressure is applied at port M
when the flushing slide is deflected.
Maximum permissible pressure build-up and reduction speed during
a pressure change across the entire pressure range.
NG250 to 500 series 30
Minimum pressure at suction port S (inlet) that is required in order to avoid
damage to the axial piston unit.
Measuring port M (small stroking chamber)
1
Single operating period
Maximum pressure p
Nominal pressure p
Total operating period = t
Notice
Working pressure range applies when using hydraulic
fluids based on mineral oils.
All assembled parts must meet the ATEX classification
for the application in question.
Measuring port: M
K4
(Please contact us for multiple coupled
pumps.)
t
2
t
1
max
nom
Minimum pressure (high-pressure side)
Time t
+ t + ... + t
1 2 n
K4
t
n