Above-Reservoir Installation - Bosch A4VG A4VG 32 Series Instruction Manual

36/68 Installation
7
X , X
2 1
R F
1
T
1
T S
2
h
S max
h
t min
h
min
10
R
1
F
1
F
T
2
2
S
SB h
S max
h
t min
h
min
Fig. 11: Above-reservoir installation A4VG with installation position 7-12
Bosch Rexroth AG, A4VG Series 32, RE 92003-01-B/12.2015

7.3.2 Above-reservoir installation

Above-reservoir installation means that the axial piston unit is installed above the
minimum fluid level of the reservoir.
Observe the maximum permissible suction height h
permissible suction height h
Recommendation for installation position 10 (drive shaft upward): A check valve in
the drain line (cracking pressure 0.5 bar) can prevent the housing area from draining.
8
F
2
SB
SB
11
X , X
3 4
X
R
T
1
T , T
Highest drain port
1 2
F , F
Filling / air bleeding
1 2
R, R
Air bleeding
1
S Suction port
X , X
Control pressure
1 2
X , X
Stroking chamber pressure port
3 4
Ports F and F are part of the external piping and must be provided on the
1 2
customer side to make filling and air bleeding easier.
is derived from the total pressure loss.
S
F
1
F
2
T
2
S
T
1
h
S max
h
t min
h
min
F
1
T
3 1
S
F
2
T
h
2
SB
S max
h
t min
h
min
h
Minimum required immersion depth (200 mm)
t min
h
Minimum required distance to reservoir
min
bottom (100 mm)
h
Maximum permissible suction height (800 mm)
S max
SB Baffle (baffle plate)
= 800 mm. The
S max
9
S
F
X , X
2 1
T
1
T
2
h
t min
h
min
12
F
1
T
F
2
S
h
SB
T
S max
1
h
t min
h
min
F
2
1
h
S max
SB
X
2 4