Bosch Rexroth Hagglunds VI 64 Series - Technical Data; Recommended Charge Pressure

8/68 Technical data
Bosch Rexroth Mellansel AB, Intallation and maintenance manual, Hägglunds VI, RE 15310-WA/10.2015
2 Technical data
2.1 Recommended charge pressure
The motor must be connected to the hyd raulic system so that it receives sucient
charge pressure at the low pressure connection. This applies to all types of
installations.
WARNING
In hanging load applications, charge pressure at motors connection must be
according to graph below under all conditions.
Two alternatives of motor duty must be considered:
1. The graph is for motors, used in half displacement connection (“high speed
range”) or operating as a braking unit (during hydrostatic braking).
2. When motors are operating exclusively in driving mode, the charge pressure is
30% of the graph values but may not be below 2 bar/29 psi.
44-, 64- and 84-series:
Max case pressure is 3 bar/43.5 psi (for 1% of the operation time evenly di vided,
pressure peaks of max 5 se conds up to 8 bar/116 psi are allowed).
The max permitted case pressure at stand still is 8 bar/116 psi.
For motors tted with silicon-rubber seals these pressures must be reduced by 50%.
n r/min
0
2
4
6
8
10
12
14
16
p
c
bar
p
c
psi
0102030405060708090 100
44-04700
64-13500
44-09200
64-11100
64-16300
44-06800
50
100
150
200
Valid for 1 bar / 14.5 psi case pressure
With increased case pressure, the charge
pressure must be increased accordingly.
Fig. 2: Charge pressure