Mounting Of The Counterbalance Valve - Bosch Rexroth BVD 52 Series Quick Start Manual

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)
2 screws (6, 7)
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
Thread Property class
M14 10.9
The tightening torque applies to the thread friction rate of μ = 0.10
1)
(corresponds to the "lightly oiled" state of the screws)
The depth depends on the motor
2)
Bosch Rexroth AG, RE 95528/05.2016
Length B1+B2+B3
Length B3+B4
G M
ext KC
3 7 6 2
M M
KD KC
1 5 8 4
Tightening torque
[Nm]
1)
172
Axial A6VM/65
piston motor
Size 200
Dimension B1
Dimension B2
Dimension B3
Dimension B4
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
▶ Minimum thread reach according to VDI2230
M
KC
A6VE/65 A6VM/71 A6VE/71
200 215, 280 215
M14 × 2; (19 deep 1) )
154 -0.5
Customer-specific
M14 × 2; 19 deep
must be present
ext