REXROTH DBA Series User manual

1/26
Information on available spare parts:
www.boschrexroth.com/spc
Pump safety block
Types DBA, DBAW, DBAE(E)
Sizes 16, 25, 32
Component series 2X
Maximum operating pressure 350 bar
Maximum flow 400 l/min
RE 25890/07.07
Replaces: 07.03
Table of contents Features
– Pressureless start-up and circulation of the pump
– Provided for direct mounting to the SAE pressure port of the
pump
– Low circulation pressure due to short distance
– Small compressive volume, hence smooth change-over to
pressureless circulation
– Fast pressure build-up
– 4 pressure adjustment elements, optional:
• Rotary knob
• Sleeve with hexagon and protective cap
• Lockable rotary knob with scale
• Rotary knob with scale
– 5 pressure ratings, optional
– Low noise level due to direct flange-mounting to the pump
H5872
Content Page
Features 1
Ordering code 2, 3
Mating connectors 4
Schematic arrangement of symbols 4
Variant code 5
Examples of possible symbols 6 to 8
Function, sections 9 to 11
Technical data 12
General notes 13
Characteristic curves 13, 14
Unit dimensions 15 to 20
Permissible pumps 21, 22
Type-tested safety valves of type DBA…E,
component series 2X, according to Pressure Equipment
Directive 97/23/EC
(in the following, “PED“ in short)
Ordering code 23
Safety notes 24
Deviating technical data 24
Characteristic curves 25, 26
Inhalt
Table of contents 1
Features 1
Ordering code 2
3
Mating connectors to DIN EN 175301-803 for plug-in connector
“K4“ 4
Mating connectors to DIN EN 175301-803 for plug-in connector
“K14“ 4
Schematic arrangement of symbols 4
Variant code 5
Examples of possible symbols: for fixed displacement pumps
(selection) 6
Examples of possible symbols: for variable displacement pumps
(selection) 7
Examples of possible symbols: for variable displacement pumps
(selection) 8
Function, sections: Type DBA… 9
Function, sections: Type DBAW… 10
Function, sections: Type DBAE(E)… 11
Technical data (for applications outside these parameters, please
consult us!) 12
General notes 13
Characteristic curves (measured with HLP46, ϑoil = 40 °C ± 5
°C) 13
Characteristic curves (measured with HLP46, ϑoil = 40 °C ± 5
°C) 14
Unit dimensions: Type DBA… (dimensions in mm) 15
Unit dimensions: Type DBAW… (dimensions in mm) 16
Unit dimensions: Type DBAW…Z… (dimensions in mm) 17
Unit dimensions: Type DBAE(E)… (dimensions in mm) 18
Unit dimensions (dimensions in mm) 19
Unit dimensions: Explanations of items 20
Permissible pumps: Standard flange (3000 psi) 21
Permissible pumps: High-pressure flange (5000 psi) 22
Ordering code: Type-tested safety valves of type DBA…E, com-
ponent series 2X according to Pressure Equipment Directive
97/23/EC 23
Safety notes: Type-tested safety valves of type DBA…E, com-
ponent series 2X according to Pressure Equipment Directive
97/23/EC 24
Deviating technical data: Type-tested safety valves of type
DBA…E, component series 2X according to Pressure Equip-
ment Directive 97/23/EC 1) 24
Safety notes: Type-tested safety valves of type DBA…E, com-
ponent series 2X according to Pressure Equipment Directive
97/23/EC 25
Safety notes: Type-tested safety valves of type DBA…E, com-
ponent series 2X according to Pressure Equipment Directive
97/23/EC 26
Notes 27
Notes 28
Blocked for new applications / Für Neuanwendung gesperrt

2/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Ordering code
Pump safety block
Without directional valve = No code
With built-on directional valve (data sheet RE 23178) = W
With built-on proportional pressure relief valve for external = E
control electronics, valve type DBET-5X/…-27 10)
With built-on proportional pressure relief valve with integrated = EE
control electronics, valve type DBETE-5X/…-27 10)
Size 16 = 15
Size 25 = 25
Size 32 = 30
Without directional valve = No code
With built-on directional valve, normally closed = A 1)
With built-on directional valve, normally open; generally with type DBAE(E) = B 1)
Connection / SAE flange 2)
Standard flange (3000 to 5000 psi) = F
High-pressure flange (5000 psi) = H
Type of adjustment element for pressure adjustment 3)
Rotary knob (rotary knob with scale “KW“) = 1
Sleeve with hexagon and protective cap (spindle with protective cap “S“; = 2
Adjustment element on pressure switch “AS”)
Lockable rotary knob with scale (lockable rotary knob with scale “KS“) = 3 4)
Rotary knob with scale (rotary knob with scale “KW“) = 7
Without pressure switch = –
With built-on pressure switch type HED 8 OH… = D 7)
With plug-in connector to DIN EN 175301-803, without mating connector (data sheet RE 50061)
Component series 20 to 29 (20 to 29: unchanged installation and connection dimensions) = 2X
Pressure rating 5)
Set pressure up to 50 bar = 50
Set pressure up to 100 bar = 100
Set pressure up to 200 bar = 200
Set pressure up to 315 bar = 315
Set pressure up to 350 bar = 350
DBA 2X
1) Ordering detail required only for variant with built-on direc-
tional valve “DBAW“ or proportional pressure relief valve
“DBAE(E)“.
2) Please observe pressure ratings and connection dimen-
sions on page 19!
3) Adjustment element for pressure switch “HED 8“ in brack-
ets!
4) H-key, Material no. R900008158, is included in the scope of
supply.
5) Identical pressure rating of pressure relief cartridge valve
“DB 20 K“, pressure relief valve (sandwich plate valve)
“Z(2)DB 6“, and pressure switch “HED 8“.
6) Attention! The unintended actuation of the manual over-
ride can result in uncontrolled machine movements!
7) Mating connectors, separate order, see page 4 and/or page
18 for variant “DBAEE“.
8) Generally when used for pressure relief function for and
control of variable displacement pump “A10VSO“, sizes 28
to 140 (RE 92711). Preferably with pressure and flow con-
troller “DFR1“, pressure controller “DR “ or power controller
“DFLR“, size 18 (RE 92712)
9) Only when used for pressure relief function for and control
of variable displacement pump “A10VSO“
10) Drain pilot oil from DBET(E) externally
11) When used on variable displacement pump with DFLR con-
troller, the orifice in the X port of the pump controller must
be removed!
Blocked for new applications / Für Neuanwendung gesperrt

Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 3/26
Further details in clear text
Type test
No code = Without type test
E = Type-tested safety valve according to PED 97/23/EC
Seal material
No code = NBR seals
V = FKM seals
(other seals on request)
Attention!
Observe compatibility of seals with hydraulic fluid used!
Orifice placement for fixed displacement pumps
No code = Lateral channel closed, transverse channel open, pilot oil bore open;
(standard for fixed displacement pumps; pure DB/DBW function)
Orifice placement for variable displacement pumps
A00 = Lateral channel closed, transverse channel open; pilot oil bore closed
(e.g. for A4VSO140 with DRG controller)
A08 11) = Orifice Ø0.8 mm in lateral channel, transverse channel open; pilot oil bore
closed (standard for control pump with DFR1 or DFLR controller)
A10 11) = Orifice Ø1.0 mm in lateral channel, transverse channel open; pilot oil bore closed
(for orifice placement of the block, see symbols on pages 6 to 8)
Electrical connection 1)
K4 7) = Without mating connector; individual connection with plug-in connector
to DIN EN 175301-803
K31 7) = Without mating connector; individual connection with plug-in connector
to DIN EN 175201-804 (only variant “DBAEE…“)
N9 1; 6) = With concealed manual override (standard)
N1; 6) = With manual override
No code = Without manual override
G24 1) = 24 V DC (generally with variant “DBAE(E)…“)
G205 1) = 205 V DC
W230 1) = 230 V AC 50/60 Hz
No code = Without directional valve
6E 1) = With directional spool valve (only with type DBAW)
No code = Standard version
U = Valve for minimum opening pressure (not with type DBAE(E))
No code = Without additional pressure relief valve
Z5) = With built-on pressure relief valve type ZDB 6 VB…-4X/..SO2 (RE 25751)
ZZ 9; 5) = With built-on pressure relief valve type Z2DB 6 VC…-4X/..SO2 (RE 25751)
*
Further standard types and components are shown in the
EPS (standard price list).
Blocked for new applications / Für Neuanwendung gesperrt

4/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Mating connectors to DIN EN 175301-803 for plug-in connector “K4“
For details
and further mat-
ing connectors,
see RE 08006
Color
Material no.
Without circuitry
With indicator lamp
12 … 240 V
With rectifier
12 … 240 V
With indicator lamp and
Zener diode suppressor
circuit 24 V
Gray R901017010 – – –
Black R901017011 R901017022 R901017025 R901017026
Material no.
Without circuitry
250 V
With circuitry (indicator lamp) AC/DC
6 … 14 V 16 … 30 V 36 … 60 V 90 … 130 V 180 … 240 V
Black R901017012 R901017030 R901017048 R901017032 R901017035 R901017037
Imax 16 A 4 A 4 A 4 A 4 A 4 A
Schematic arrangement of symbols
Symbol Location of orifices/plugs items 4, 5 and 6
2
45
3 3
1
6
MP
P1
A
X
B
B
X
TP
A
T
Y1)
5
M
4
X
6
1) Only with type DBAE(E)
For others, see variant code on page 5
Mating connectors to DIN EN 175301-803 for plug-in connector “K14“
Blocked for new applications / Für Neuanwendung gesperrt

Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 5/26
Variant code
1) With DBAW with ZDB/Z2DB valve
2) With DBAW without ZDB/Z2DB valve
3) With DBAE for external control electronics/amplifier card
4) With DBAEE with internal control electronics/amplifier card
5) Only 1 pressure relief feature
6) Standard for fixed displacement pumps
1 2 3 4,5,6 1 2 3 4 5 6
DBA 15 AF 1 – 2X/ 50 – * E G … ***
W 25 BH 2 D 100 Z 6 W A00
E 30 3 200 ZZ A08
EE 7 315 A10
350
Cover plate HSA 06 A 001 … 4WE 6 H 6X.. 4WE 6 HB 6X.. 4WE 6 L37B.6X/.. DBET-5X/..K4.-27 DBETE-5X/..K31.-27 HED 8 OH 2X/...K14.. ZDB 6 VB.-4X/...SO2 Z2DB 6 VC.-4X/...SO2 Orifice Ø0.8 in lateral channel Orifice Ø1.0 in lateral channel Plug in lateral channel Plug in pilot oil bore/cartridge Plug in pilot oil bore
DBA X
W X X X
E X X
EE X X
A (normally closed) X
B (normally open) X1) X2) X3) X4)
– (without pressure switch) –
D (with pressure switch) X
– (standard valve 5)) – –
Z (max. 2 pressure relief features) X
ZZ (max. 3 pressure relief features) X
No code 6) X
A00 X X
A08 X X
A10 X X
Blocked for new applications / Für Neuanwendung gesperrt

6/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Examples of possible symbols: for fixed displacement pumps (selection)
Type DBA…2X/… Type DBAW.B…2X/.Z
A
P M
P1
X
BT
A
P M
P1
X
B
B
ba
P T
A
A
B
T
Type DBAW.A…2X/… Type DBAE(E)…2X/…
A
B
X
B
P M
P T
P1
A
T
X
A B
P M Y1)
P1
P
T
Type DBAW.B…2X/…
BA
B
X
P M
P1
A
P T
T
1) Attention!
Port Y of the DBET valve on the DBA block must be connected
at zero pressure to the tank! (If required, via leakage line of the
hydraulic system.)
Blocked for new applications / Für Neuanwendung gesperrt

Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 7/26
Examples of possible symbols: for variable displacement pumps (selection)
– Preferably for A10VSO with DR, DFR1 or DFLR controller 2)
Type DBAW.B…2X/…A08 Type DBAW.B…2X/.Z…A08
X
X
A
B
B
P M
P1
P T
A
T
X
A
P M
P1
X
B
B
a b
P T
A
A
B
T
Type DBAE(E)…2X/…A08 Type DBAW.B…2X/.ZZ…A08
X
A B
P XM Y1)
P1
P
T
T
MP X
P1
B
X
A
B
ba
P T
A
A
B
A
B
T
1) Attention!
Port Y of the DBET valve on the DBA block must be con-
nected at zero pressure to the tank! (If required, via leakage
line of the hydraulic system.)
2) Attention!
When used on variable displacement pump with DFLR
controller, the orifice must be removed from the X port of the
pump controller!
Blocked for new applications / Für Neuanwendung gesperrt

8/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Examples of possible symbols: for variable displacement pumps (selection)
– Preferably for A10VSO with DRG controller
Type DBAW.B…2X/.Z…A00
P M X
P1
X
A
B
B
a b
P T
A
T
A
B
Type DBAW.B…2X/.ZZ…A00
MP
P1
A
X
B
B
a b
X
TP
A
A
B
A
B
T
Type DBAE(E)…2X/…A00
X
A
T
P M X Y1)
P
P1
B T
1) Attention!
Port Y of the DBET valve on the DBA block
must be connected at zero pressure to the
tank! (If required, via leakage line of the hy-
draulic system.)
Blocked for new applications / Für Neuanwendung gesperrt

T
P
P1
M
T
P
P1
M
1
13
14
6 5 11 109
28
3
4
712
1 6 5 11 109
28
4
71213
Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 9/26
Function, sections: Type DBA…
General
Pump safety blocks of type DBA… are pilot operated pressure
relief valves, which are integrated in a block and provided for
direct mounting to the SAE pressure port of the pump.
They are used for the limitation (DBA) or limitation and sole-
noid-operated unloading (DBAW, DBAE.) of the operating
pressure.
These pump safety blocks basically consist of valve block
(1) and pressure relief cartridge valve type DB 20 K (2) to
RE 25818. Optionally, a pressure switch of type HED 8 (3) to
RE 50061 can be fitted to the valve block.
The valve housing is provided with a port P for the inlet and a
port P1 for the outlet of the hydraulic fluid. The pressure relief
cartridge valve is installed in a branch of this passage and pro-
vides a connection to port T (tank line) in the open position.
Type DBA 15 .2 –2X/…
Type DBA 15 .2 D2X/…
In the basic version, the porting pattern of size 6 is covered by
cover plate (4). The pressure applied in the passage connec-
tion (P–P1) acts on main spool (5) of the pressure relief car-
tridge valve. At the same time, the pressure is applied via ori-
fice bores (6 and 7) to poppet (8). When the pressure in port
P exceeds the pressure set on spring (9), poppet (8) opens
against spring (9).
Now, the hydraulic fluid flows from channel P via orifice bores
(6 and 7) into spring chamber (10), from where it is fed internal-
ly via pilot line (11) to the tank.
Due to the balanced condition at spool (5), hydraulic fluid flows
from channel P to channel T while the set operating pressure is
maintained.
A pressure gauge connection (12) allows the operating pres-
sure to be checked.
Pump safety block type DBA…D (with pressure switch)
The use of an electrical pressure switch of type HED 8 (3) to
RE 50061 allows an electric circuit to be closed or interrupted
via pilot line (13).
In the basic version, pilot line (13) is plugged with a plug screw
(14).
Pressure gauge port M and tank port T
are drawn rotated by 90 °!
Blocked for new applications / Für Neuanwendung gesperrt

P
P1
X
T P
P (T)
A B
(T)A B
16
15
15
P
10/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Function, sections: Type DBAW…
Pump safety block type DBAW
In principle, the function of this block corresponds to that of
block type DBA…. Here, unloading across the main spool is,
however, accomplished through the activation of built-on direc-
tional valve (15). In this variant, cover plate (4) is not provided.
Pump safety block type DBAW.B…Z… for fixed displacement
pump (with pressure relief valve)
In principle, the function corresponds to that of type DBAW….
The pressure relief valve type ZDB 6 (16) to RE 25751 and the
operation of directional valve (15) deactivates the pilot control
of pressure relief cartridge valve type DB 20 K, and the pres-
sure set on pressure relief valve type ZDB 6 is activated. The
pressure setting on pressure relief valve type ZDB 6 is only ef-
fective, if it is lower than the setting of pressure relief cartridge
valve type DB 20 K.
Pump safety block Type DBAW.B…Z…A for control pump
A10V… (with pressure relief valve)
In principle, the function corresponds to that of type DBAW….
Type DBAW 15 .2–2X/.Z…
Type DBAW 15 .2–2X/…
Pressure relief valve type ZDB 6 (16) to RE 25751 and the op-
eration of directional valve (15) cause a change in pressure at
pilot port X. The change in pressure, which is set on pressure
relief valve type ZDB 6, acts on the controller of the pump. The
pressure set on pressure relief valve type ZDB 6 is only ef-
fective, if it is lower than the setting on the pressure relief car-
tridge valve type DB 20 K.
Pump safety block DBAW.B…ZZ…A for control pump A10V..
(with pressure relief valve)
In principle, the function corresponds to that of type DBAW….
Due to pressure relief valve type Z2DB 6 (16) to RE 25751 and
operation of directional valve (15) two pressures can be gener-
ated in pilot port X. The pressure setting on pressure relief
valve type Z2DB 6 is only effective, if it is lower than the setting
on pressure relief cartridge valve type DB 20 K.
Drawn rotated by 90°
Port X drawn offset by 90°!
Blocked for new applications / Für Neuanwendung gesperrt

P
P1
13
14
11 109
287
X
P
P
561
17
Y
Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 11/26
Function, sections: Type DBAE(E)…
Pump safety block type DBAE(E) for fixed displacement
pump (with proportional pressure relief valve)
In principle the function corresponds to that of type DBA….
Unloading across the main spool is, however, achieved by
activating the built-on proportional pressure relief valve type
DBET/DBETE (component series 5X) (17) to RE 29165. Cover
plate (4) is not provided.
The pressure set on proportional pressure relief valve type
DBET/DBETE is only effective, if it is lower than the setting on
pressure relief cartridge valve type DB 20 K.
Type DBAE 15 .2…
Type DBAEE 15 .2…
Pump safety block Type DBAE(E) for variable displacement
pump type A10V.. (with proportional pressure relief valve)
In principle, the function corresponds to that of type DBA….
By means of proportional pressure relief valve type DBET/
DBETE (component series 5X) (17) a change in pressure is
achieved in pilot port X. The change in pressure acts on the
controller of the pump. Cover plate (4) is not provided.
The pressure set on proportional pressure relief valve type
DBET/DBETE is only effective, if it is below the setting of pres-
sure relief cartridge valve type DB 20 K.
Port Y must be connected at
zero pressure to the tank!
Port X drawn off-
set by 90°!
Drawn rotated by 90°
Blocked for new applications / Für Neuanwendung gesperrt

12/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Technical data (for applications outside these parameters, please consult us!)
General
Size Size 16 25 32
Weight With SAE flange psi 3000 5000 3000 5000 3000 5000
– Pump safety block Type DBA… kg 5.4 5.4 5.4 5.3 5.4 6.0
Type DBAW… kg 6.1 6.1 6.1 6.0 6.1 6.7
Type DBAW…Z… kg 7.9 7.9 7.9 7.8 7.9 8.5
Type DBAW…ZZ… kg 8.1 8.1 8.1 8.0 8.1 8.7
Type DBAE… kg 6.4 6.4 6.4 6.3 6.4 7.0
Type DBAEE… kg 7.0 7.0 7.0 6.9 7.0 7.6
– Pressure switch Type HED 8… kg + 0.8
Installation position Optional
Ambient temperature range NBR seals FKM seals
– Type DBA… °C –30 to +80 –15 to +80
– Type DBAW… °C –30 to +50 –15 to +50
– Type DBAE(E)… °C –20 to +50 –15 to +50
Hydraulic
Maximum operating pressure – Port P bar 350
Maximum counterpressure,
port T
– Type DBA… bar 250
– Type DBAW… bar 210 with DC solenoid, and 160 with AC solenoid
– Type DBAE(E)… bar At zero pressure to tank
Minimum set pressure bar Depending on flow (see characteristic curves on page 13)
Maximum set pressure bar 50; 100; 200; 315; 350 (type HED 8: 50; 100; 200; 350)
Maximum flow l/min 300 400 400
Hydraulic fluid – Type DBA(W)… Mineral oil (HL, HLP) to DIN 51524 1); fast bio-degradable
hydraulic fluids to VDMA 24568 (see also RE 90221); HETG
(rape seed oil) 1); HEPG (polyglycols) 2); HEES (synthetic
esters) 2); other hydraulic fluids on request
– Type DBAE(E)… Mineral oil (HL, HLP) to DIN 51524 1); other hydraulic fluids on
request
Hydraulic fluid temperature
range
NBR seals FKM seals
– Type DBA(W)… °C –30 to +80 –20 to +80
– Type DBAE(E)… °C –20 to +80 –15 to +80
Viscosity range – Type DBA(W)… mm2/s 10 to 800
– Type DBAE(E)… mm2/s 15 to 380
Permissible max. degree of contamination of the
hydraulic fluid - cleanliness class to ISO 4406 (c)
Class 20/18/15 3)
1) Suitable for NBR and FKM seals
2) Only suitable for FKM seals
3) The cleanliness classes specified for components must be
adhered to in hydraulic systems. Effective filtration prevents
malfunction and, at the same time, prolongs the service life
of components.
For the selection of filters, see data sheets RE 50070,
RE 50076, RE 50081, RE 50086, RE 50087 and
RE 50088.
Further technical data:
– Directional spool valve RE 23178
– Pressure relief valve (sandwich plate) RE 25751
– Proportional pressure relief valve RE 29165
• Associated amplifier (for type DBAE)
type VT-VSPA1-2-1X
RE 30115
– Pressure switch RE 50061
For deviating technical data of type-tested safety valves, see
page 24.
Blocked for new applications / Für Neuanwendung gesperrt

50
100
150
200
250
300
350
400
0 100 200 300 40050 150 250 350
12
Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 13/26
Inlet pressure in bar →
1) The characteristic curves are valid for an outlet pressure of
pT= 0 bar over the entire flow range!
Note!
The characteristic curves were measured with internal pilot oil
drain.
With internal pilot oil drain, the inlet pressure increases by the
outlet pressure present in port T.
Characteristic curves (measured with HLP46, ϑoil = 40 °C ± 5 °C)
Flow in l/min →
Inlet pressure in dependence on the flow 1)
General notes
– With types DBAW.B and DBAE/DBAEE the lowest settable
pressure (circulation pressure) is set in the event of a power
failure, and type DBAW..A changes over to the pressure
relief function.
– The unloading function (DBAW/DBAE/DBAEE) must not be
used for safety functions!
Types DBA…
and DBAW…
Types DBA…Z…,
DBA…ZZ… and
DBAE(E)…
1Size 16
2Size 25
and 32
Blocked for new applications / Für Neuanwendung gesperrt

5
10
15
20
25
30
35
40
0 100 200 300 40050 150 250 350
1
23
5
10
15
20
25
30
35
40
0 100 200 300 40050 150 250 350
1
23
14/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Characteristic curves (measured with HLP46, ϑoil = 40 °C ± 5 °C)
Note!
The characteristic curves were measured with internal pilot oil
drain.
With internal pilot oil drain, the inlet pressure increases by the
outlet pressure present in port T.
Minimum set pressure,
Circulation pressure in bar →
Flow in l/min →
Minimum set pressure and circulation pressure in dependence on the flow 1)
Standard version
Types DBA…
and DBAW…
Types DBA…Z…,
DBA…ZZ… and
DBAE(E)…
1Size 16
2Size 25
3Size 32
Minimum set pressure,
circulation pressure in bar →
Flow in l/min →
Minimum set pressure and circulation pressure in in dependence on the flow 1)
Variant “U“
1) The characteristic curves are valid for an outlet pressure of
pT= 0 bar over the entire flow range!
Types DBA…
and DBAW…
Types DBA…Z…,
DBA…ZZ… and
DBAE(E)…
1Size 16
2Size 25
3Size 32
Blocked for new applications / Für Neuanwendung gesperrt

0,01/100
Rtmax 4
MX
L3
B1
145
40,5
B3
B4
31
L2
99
26,3
B2
65
48
L1
H5
H2
Ø30
H3
H4
85
8
4 2 3
32,5
P
P1
15
T
34,5
H1
15 B6
15 B5
7
5
6
14
3
82 901
Ø32
Ø35
40
100
12 9
13
18
10
11
103
48
1
24 25
28
Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 15/26
For explanations of items, see page 20
Unit dimensions: Type DBA… (dimensions in mm)
Required surface quality of
valve mounting face
Standard flanges type DBA…F…
Size L1 L2 L3 B1 B2 B3 B4 B5 B6 H1 H2 H3 H4 H5
16 88 117 22.2 47.6 28.5 45 80 110 105 24 47 22 60 37
25 88 115.5 26.2 52.4 28.5 45 80 110 105 24 47 22 60 37
32 108.5 108.5 30.2 58.7 30.5 47 80 110 105 30 47 20 60 41
High-pressure flanges type DBA…H…
Size L1 L2 L3 B1 B2 B3 B4 B5 B6 H1 H2 H3 H4 H5
16 88 117 23.8 50.8 28.5 45 80 110 105 24 47 22 60 37
25 84 115.5 27.8 57.2 28.5 45 80 110 105 24 47 22 60 37
32 108.5 108.5 31.8 66.7 26 52 90 115 110 30 50 20 64 41
Blocked for new applications / Für Neuanwendung gesperrt

0,01/100
Rtmax 4
MX
H7
8
15
H6 15
16
5
6
34
1
14
P
15
T
14
B7
B2
19
P1
57,3
201
B8
24
P
T
F1 F2
F3
F4
3,53,5
18
18
14
14
19
17
26
25
28
16/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
For explanations of items, see page 20
For dimensions for
– pump safety block,
– pressure switch type HED 8 and
– further adjustment elements,
see page 15.
Unit dimensions: Type DBAW… (dimensions in mm)
Required surface quality of
valve mounting face
Standard flanges type DBAW…F…
Size B2 B7 B8 H6 H7
16 12 144.5 109.5 159 153
25 12 144.5 109.5 159 153
32 10 144.5 111.5 159 153
High-pressure flanges type DBAW…H…
Size B2 B7 B8 H6 H7
16 12 144.5 109.5 159 153
25 12 144.5 109.5 159 153
32 14.5 145 107 163 157
Blocked for new applications / Für Neuanwendung gesperrt

0,01/100
Rtmax 4
MX
H9
8
15
H8 15
16
5
6
34
20
14
228
117
3
8
290
1
227
256,5 18
14
13
912
11
P
P1
T
15
10
3
8
290
1
239
293 2424
222
24
P
T
F1 F2
F3
F4
26
25
28
B2
57,3
Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 17/26
Unit dimensions: Type DBAW…Z… (dimensions in mm)
For explanations of items, see
page 20
For dimensions for
– pump safety block,
– pressure switch type HED 8 and
– further adjustment elements,
see page 15.
For dimensions for directional spool
valve type WE 6, see page 16.
Required surface quality of
valve mounting face
Standard flanges type DBAW..F…Z…
Size B2 H8 H9
16 12 199 193
25 12 199 193
32 10 199 193
High-pressure flanges type DBAW..H…Z…
Size B2 H8 H9
16 12 199 193
25 12 199 193
32 14.5 203 197
Blocked for new applications / Für Neuanwendung gesperrt

0,01/100
Rtmax 4
MX
199,5
H11
8
15
H10 15
177,5
22
5
6
341
B2
18 21
14
T
P
245,5
14
P
P1
15
T
15
1423
24
25
F1 F2
F3F4
Y
B9
57,3
27
2628
18/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Unit dimensions: Type DBAE(E)… (dimensions in mm)
For explanations of items, see
page 20
For dimensions for
– pump safety block,
– pressure switch type HED 8 and
– further adjustment elements,
see page 15.
Required surface quality of
valve mounting face
Standard flanges type DBAE(E)…F
Size B2 B9 H10 H11
16 12 13 147 147
25 12 13 147 147
32 10 15 147 147
High-pressure flanges type DBAE(E)…H
Size B2 B9 H10 H11
16 12 13 147 147
25 12 13 147 147
32 14.5 10.5 151 151
Blocked for new applications / Für Neuanwendung gesperrt

Hydraulics Bosch Rexroth AG
RE 25890/07.07 DBA, DBAW, DBAE(E) 19/26
Standard flanges type DBA…F… to DIN ISO 6162-1
Size
Ports 4 valve mounting screws
ISO 4762 - 10.9 1)
Tightening
torque
MTin Nm 2)
P and P1 T X, M Material no.
16 SAE 3/4“ G3/4 G1/4 M10 x 95 R913000338 52
25 SAE 1“ G1 G1/4 M10 x 95 R913000338 52
32 SAE 1 1/4“ G1 1/4 G1/4 M10 x 95 R913000338 52
Unit dimensions (dimensions in mm)
Permissible pressures
(flanged connections to DIN ISO 6162-1)
in psi in bar
SAE 3/4“ 5000 350
SAE 1“ 4500 315
SAE 1 1/4“ 3600 250
High-pressure flanges type DBA…H… to DIN ISO 6162-2
Size
Ports 4 valve mounting screws
ISO 4762 - 10.9 1)
Tightening
torque
MTin Nm 2)
P and P1 T X Material no.
16 SAE 3/4“ G3/4 G1/4 M10 x 95 R913000338 52
25 SAE 1“ G1 G1/4 M12 x 105 R913000659 66
32 SAE 1 1/4“ G1 1/4 G1/4 M14 x 105 R913000660 113
Permissible pressures
(flanged connections to DIN ISO 6162-2)
in psi in bar
SAE 3/4“ 5000 350
SAE 1“ 5000 350
SAE 1 1/4“ 5000 350
1) Valve mounting screws (separate order)
4 hexagon socket head cap screws ISO 4762 - 10.9-flZnnc-240h-L
(with friction coefficient µtotal = 0.09 to 0.14)
Attention!
For strength reasons, no other valve mounting screws
may be used!
Depending on the operating pressure, flange height and
thread depth of the pump plate, different screw lengths may
be required!
2) The specified tightening torques are guidelines when screws
with the specified friction coefficients and a torque wrench
are used (tolerance ±10%).
Blocked for new applications / Für Neuanwendung gesperrt

20/26 Bosch Rexroth AG Hydraulics DBA, DBAW, DBAE(E) RE 25890/07.07
Unit dimensions: Explanations of items
1Nameplate
2Cover plate type HSA 06 A001-3X…
(data sheet RE 48042)
3Port X for variable displacement pump type A10VSO
(otherwise plugged); G1/4
4Port M for pressure gauge; G1/4
5Mating connector without circuitry (separate order, see
page 4)
6Mating connector with circuitry (separate order, see
page 4)
7Pressure switch type HED 8 OH…(data sheet
RE 50061)
8Adjustment element “1” 1)
9Adjustment element “2” 1)
10 Adjustment element “3” 1)
11 Adjustment element “7” 1)
12 Hexagon A/F10
13 Space required to remove key
14 Space required to remove mating connector
15 Seal rings
16 Directional spool valve type WE 6 (data sheet
RE 23178)
1) Type DBAW…Z:
Identical adjustment types as for pressure relief cartridge
valve type DB 20 K and pressure relief valve type Z(2)DB 6!
17 Dimension for solenoid with concealed manual over-
ride “N9“ (standard) – the manual override can only
be operated at tank pressures of up to approx. 50 bar.
Avoid damage to the bore for the manual override! (Use
special tool for operation, separate order, Material no.
R900024943)
18 Dimension for valve with manual override “N“
19 Dimension for valve without manual override
20 Pressure relief valve (sandwich plate) type Z(2)DB 6 …
(data sheet RE 25751)
21 Dimension for valve with integrated electronics type
DBAEE…
22 Proportional pressure relief valve type DBET(E)… (data
sheet RE 29165)
23 Mating connector for type DBAEE to
DIN EN 175201-804 (separate order, Material no.
R90021267)
24 Hexagon A/F 30, Tightening torque MT= 50 Nm
(For tightening, a torque wrench with a tolerance of
10% must be used.)
25 Locknut A/F 22,
Tightening torque MT= 10±5 Nm
26 Porting pattern to DIN 24340 Form A (without locat-
ing bore), or ISO 4401-03-02-0-05 (with locating
bore for locating pin ISO 8752-3x8-St, Material no.
R900005694, separate order)
27 Port Y (G1/4) must be connected at zero pressure to
tank (if required, via leakage line L of the hydraulic sys-
tem)!
28 Valve mounting bores
Blocked for new applications / Für Neuanwendung gesperrt