Bosch 70 Series - Above-Reservoir Installation

Installation 27/52
RE 91071-01-B/03.2015, A2FM/A2FE Series 70, Bosch Rexroth AG
7.3.2 Above-reservoir installation
Above-reservoir installation means the axial piston unit is installed above the
minimum fluid level of the reservoir.
Also bleed air through air bleed port R when installing with the “drive shaft upwards”
(special version).
Recommendation for installation position (drive shaft upward): A check valve in the
drain line (cracking pressure 0.5bar) can prevent the housing area from draining.
T
1
L
1
h
t min
h
min
T
2
L
1
h
t min
h
min
T
1
L
1
h
t min
h
min
T
2
R
L
1
0.5 bar
h
t min
h
min
5 6 7 8
Fig. 7: A2FM above-reservoir installation with installation position 5–8
T
1
, T
2
Highest drain port
h
t min
Minimum required immersion depth
(200mm)
L
1
Filling/air bleeding
Note: L
1
is part of the external piping
h
min
Minimum required distance to
reservoir bottom (100mm)
Table 9: Above-reservoir installation
Installation position Air bleeding Filling
5 (drive shaft horizontal) – T
1
(L
1
)
6 (drive shaft horizontal) – T
2
(L
1
)
7 (drive shaft vertically downward) – T
1
(L
1
)
8 (drive shaft vertically upward) R T
2
(L
1
)