Bosch rexroth A21VG 10 Series - Installation position; Below-reservoir installation (standard)

Installation 27/56
RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation
7.3 Installation position
The following installation positions are permissible. The shown piping layout
illustrates the basic layout.
If it is not possible to ll the stroking chambers via X
1
to X
2
in the nal
installation position, this must be done prior to installation.
In order to prevent unexpected activation behavior and damage, the stroking
chambers must be air bled via ports X
1
, X
2
, according to their installation
position.
7.3.1 Below-reservoir installation (standard)
Below-reservoir installation means that the axial piston unit is installed outside of
the reservoir below the minimum uid level.
Recommended installation position: 1 and 2 (without boost pump)
1 2
T
X
1
, X
2
X
2
, R, X
1
h
t min
h
min
SB
T
h
t min
h
min
SB
Fig. 6: Below-reservoir installation A21VG without boost pump, installation position 1–2
R
Air bleed port
h
t min
Minimum required immersion depth
(200 mm)
T
Reservoir port (case drain)
SB
Bafe (bafe plate)
h
min
Minimum required spacing to
reservoir bottom(100mm)
Table 8: Below-reservoir installation
Installation position Air bleeding the
housing
Air bleed
Stroking chamber
Filling
1 (drive shaft, horizontal) R* X
1
, X
2
T + X
1
+ X
2
2 (drive shaft, horizontal) – – T
* If R port is inaccessible, for installation position 1, the X
1
and X
2
ports can be opened to bleed
the air when the unit is not in use. Does not apply to HT units.