Bosch Rexroth AG
, RE 95528/05.2016
4
BVD/BVE Series 52
| Counterbalance valve
Technical data
Technical data
Hydraulic fluid
The axial piston motor used is decisive for the selection of
hydraulic fluid. For further information, please refer to our
data sheets during project planning.
Note:
At no point of the component may the temperature
be higher than 115 °C.
Working pressure range
Pressure at working port
C/D (on the pump side) or
C´/D´ (on the motor side)
Definition
Nominal
pressure
p
nom
On the pump side:
350 bar
On the motor side:
450 bar
The nominal pressure
corresponds to the maximum
design pressure.
Maximum
pressure
p
max
On the pump side:
400 bar
1)
On the motor side:
500 bar
Restrictions:
▶ maximum acceleration 7
g
▶ maximum 1 million load
changes
Determination of cracking pressure p
1
(values without
return flow)
The throttle chain from
D
1
and
D
2
is used to damp the
opening and closing speeds of the counterbalance spool.
The actual pump pressure
is reduced by the throttle chain
from
D
1
and
D
2
and controls the counterbalance spool.
▼ Circuit diagram BVD
D
1
D
1
D
2
D
2
M
KC
M
KD
G
ext
D
C
G´
L´
D´
C´
Port side
(on the pump
side)
Counter balance
spool
Motor side
Table of values
Valve type
BVD...W
BVD...V
BVE...W
Nominal pressure
p
bar
On the
pump side
350
350
350
motor side
450
450
450
Flow, nominal
q
v max
l/min
650
650
650
Start of opening of counterbalance spool at port M
K
Δp
K B
bar
20
10
20
End of opening of counterbalance spool at port M
K
Δp
K E
bar
38
30
38
Pressure reducing valve for
brake release (fixed setting)
Maximum control pressure
p
bar
BVE...L/
21
+4
21
+4
21
+4
Beginning of control
p
bar
BVE...L/
10
+4
10
+4
10
+4
Weight approx.
m
kg
37
37
42
Notice
▶ Theoretical values, without efficiency and tolerances;
values rounded
▶ Exceeding the maximum or falling below the minimum
permissible values can lead to a loss of function,
a reduction in operational service life or total
destruction of the valve.
1)
With versions “T03”, “C03” and “D03” (concerns damping “D2”,
for reservoir outlet), pressures that are higher than the nominal
pressure are
not
permitted
