Bosch Rexroth DB 5X E Series Operating Instructions Manual page 36

36/56 Operation
Bosch Rexroth AG, DB(W)...5X/...E, RE25802-B/09.19
Read off the maximum admissible counter pressure of approx. 11.5 bar from the
diagram (see arrows, dashed characteristic curve).
9.3.2 Counter pressure diagram DB(W)20...5X/...E
Diagram for determining the maximum admissible counter pressure p
discharge line at tank port T of the valve dependent on the flow q
DB(W)20...5X/..E with different response pressures p
discharge. Intermediate values can be determined by means of interpolation.
Regarding the procedure for interpolation refer to the explanatory notes on the
preceding pages.
Table 14: Counter pressure diagram DB(W)20...5X/...E
p Response pressure in bar
A
p Maximum admissible counter pressure in the discharge line (port T)
T
in bar
q Maximum flow in l/min
Vmax
Area I Interpolation area I, for valves DB(W)20...5X/...E with
response pressure p
q =180 l/min
Vmax
Area II Interpolation area II, for valves DB(W)20...5X/...E with
response pressure p
q =210 l/min
Vmax
Area III Interpolation area I, for valves DB(W)20...5X/...E with
response pressure p
q =320 l/min
Vmax
Area IV Interpolation area I, for valves DB(W)20...5X/...E with
response pressure p
q =400 l/min
Vmax
with internal pilot oil
A
=30...60 bar and maximum flow
A
=65...110 bar and maximum flow
A
=115...210 bar and maximum flow
A
=215...350 bar and maximum flow
A
in the
T
for valves
Vmax