Bosch rexroth A21VG 10 Series - Page 36

36/56 Installation
Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020
B
B
A A
T
X
1
X
2
X
2
X
1
R
G
Table 10: Ports A21VG series 10
1)
Ports Standard
2)
Size [in]
3)
p
max abs
[bar]
4)
State
5)
A, B Working port ISO 11926 11/16-12UN-2B; 20deep 450 O
T Drain port ISO 11926 11/16-12UN-2B; 20deep 3 O
R Air bleed on pump 1 ISO 11926 9/16-18 UNF-2B; 13 deep 3 X
X
1
, X
2
Control pressure
(upstream of orice, only HP, HW, EP, ET)
ISO 11926 9/16-18 UNF-2B; 13 deep 30 X
X
1
, X
2
Control pressure (HT) ISO 11926 9/16-18 UNF-2B; 13 deep 30 O
Y Pilot pressure, outlet
(only for DA control valve)
ISO 11926 9/16-18 UNF-2B; 13 deep 30 O
G Boost pressure, inlet ISO 11926 3/4-16 UNF-2B; 15 deep 30 O
Y
BR
Brake release pressure ISO 11926 9/16-18 UNF-2B; 13 deep 30 X
P
S
Pilot pressure supply
(ltered internally)
ISO 11926 9/16-18 UNF-2B; 13 deep 30 X
G
1
Boost pressure, inlet
(only for DA control valve)
ISO 11926 9/16-18 UNF-2B; 13 deep 30 X
1)
Thread according to ASME B1.1
2)
The spot face can be deeper than specied in the appropriate
standard.
3)
For notes on tightening torques, see instruction manual
4)
Momentary pressure spikes may occur depending on the
application. Keep this in mind when selecting measuring
devices and ttings.
5)
O = Must be connected (plugged on delivery)
X = Plugged (normal operation)
PortG (or G
1
on the version with DA control valve) must be charged with boost
pressure by the customer.
Port overview
Fig. 10: Port overview A21VG, EP control with boost pump