Bosch Rexroth AG
, RE 95528/05.2016
12
BVD/BVE Series 52
| Counterbalance valve
Mounting of the counterbalance valve
Mounting of the counterbalance valve
When delivered, the counterbalance valve is fastened to the
motor with two tacking screws (transport lock). The tacking
screws may not be removed while mounting the working lines!
If the counterbalance valve and motor are delivered sepa-
rately, the counterbalance valve must first be fastened to the
motor port plate using the provided tacking screws.
The counterbalance valve is finally mounted to the motor
by fitting the SAE flange with the following screws:
6 screws (1, 2, 3, 4, 5, 8)
Length B1+B2+B3
2 screws (6, 7)
Length B3+B4
Tighten the screws in two steps in the specified sequence
from 1 to 8 (see figure below).
In the first step, the screws must be tightened with half the
tightening torque, and in the second step with the maxi-
mum tightening torque (see table below).
M
KD
M
KD
M
KC
3
7
6
2
1
5
8
4
M
KC
G
ext
Thread
Property class
Tightening torque
[Nm]
1)
M14
10.9
172
B1
2)
B2
B3
B4
M
KC
Axial
piston motor
A6VM/65
A6VE/65
A6VM/71
A6VE/71
Size
200
200
215, 280
215
Dimension B1
M14 × 2; (19 deep
1)
)
Dimension B2
154 -0.5
Dimension B3
Customer-specific
Dimension B4
M14 × 2; 19 deep
Notes on the motor port plate
▶ All four threaded bores at the SAE port and additional
bores for tacking screws must always be present
▶ Drain bores and port
G
ext
must be present
▶ Minimum thread reach according to VDI2230
1)
The tightening torque applies to the thread friction rate of μ = 0.10
(corresponds to the “lightly oiled” state of the screws)
2)
The depth depends on the motor
