Characteristic Curves For Counterbalance Spool 33 - Bosch Rexroth BVD 52 Series Quick Start Manual

Characteristic curves for counterbalance spool 33

▼ Pressure differential at the outlet (via valve spool) D´
or C´ C working port at rear (38)
22
20
18
16
14
12
10
8
6
4
2
0
100 200
Flow q
▼ Pressure differential at the inlet (via check valve) C
working port at rear (38)
16
14
12
10
8
6
4
2
0
100 200
Flow q
The above parameters are based on:
▶ Oil viscosity = approx. 21 mm
ν
▶ Oil temperature ϑ = 50 °C
▶ Counterbalance spool fully open
Notice
▶ Pressure Δp of approx. 20 to 50 bar is normal for deter-
mining the maximum flow in winch drives.
▶ If the desired flow (pressure difference) does not
match the counterbalance spool described here,
please contact us.
300 400 500 600 650
[l/min]
V
C´ or D
300 400 500 600 650
[l/min]
V
2 /s
Counterbalance valve | BVD/BVE Series 52
Characteristic curves for counterbalance spool 33
D ▼ Pressure differential D´
with working port offset by 90° (31)
22
20
18
16
14
12
10
8
6
4
2
0
100
D´ ▼ Pressure differential C
with working port offset by 90° (31)
16
14
12
10
8
6
4
2
0
100
D or C´ C (via valve spool)
200 300 400 500
Flow q [l/min]
V
C´ or D D´ (via check valve),
200 300 400 500
Flow q [l/min]
V
RE 95528/05.2016, Bosch Rexroth AG
5
600 650
600 650