1/16
4/2 proportional directional control
valve, without position control
Type 4WRBA..EA..
Nominal size 6, 10
Unit series 2X
Maximum working pressure P, A, B 315 bar, T 250 bar
Nominal flow rate Q
nom
14...28 l/min (NG6), 32...63 l/min (NG10)
RE 29047/09.05
Overview of Contents
Contents Page
Features 1
Ordering data 2
Preferred types 2
Symbols 2
Function, sectional diagram 3
Accessories 4
Technical data 5 and 6
External trigger electronics 7 to 9
Characteristic curves 10 to 13
Unit dimensions 14 and 15
Features
– Directly controlled NG6 and NG10 valves with positive overlap
and external valve electronics
– Actuated on one side, standard symbol EA, normally closed
version NC (normally open NO also available, with manual
adjustment as optional extra)
– Adjustable by means of the solenoid current, see Characteris-
tic Curve, Technical Data and the selected valve electronics
– Solenoid version I
max
= 2.5 A
– For subplate attachment, mounting hole configuration NG6
to ISO 4401-03-02-0-94, NG10 to ISO 4401-05-04-0-94
– Subplates as per catalog sheet, RE 45053 for NG6,
RE 45055 for NG10 (order separately)
– Plug-in connector to DIN 43650-AM2 included in scope of
delivery
– External trigger electronics with ramps and valve calibration in
the following versions/designs (order separately)
• Plug, setpoint 0...+10 V or 4...20 mA, RE 30264
• Module, setpoint 0...+10 V, RE 30222
• Europe card format, setpoint 0...+10 V, RE 30109
2/16 Bosch Rexroth AG Hydraulics 4WRBA..EA.. RE 29047/09.05
Ordering data
4/2 proportional directional
control valve, without position
control
NG6 = 6
NG10 = 10
Symbols
4/2-way version
1)
2)
= X
Actuating side
= A
Further information
in plain text
–892 = see symbol
1)
–893 = see symbol
2)
M = NBR seals,
suitable for mineral oils
(HL, HLP) to DIN 51524
Z4 = Electrical connection
With unit plug to DIN 43650-AM2
with plug-in connector,
included in scope of delivery
N = Manual adjustment
N9 = Manual auxiliary override
(covered)
G24 = Voltage supply of trigger electronics
+24 V DC
2X = Unit series
(installation and connection dimensions unchanged)
Nominal flow rate (∆p = 5 bar per metering notch)
NG6
15 = 14 l/min
30 = 28 l/min
NG10
32 = 32 l/min
64 = 63 l/min
Preferred types
NG6 Solenoid 2.5 A NG10 Solenoid 2.5 A
Type Material Number Type Material Number
4WRBA6EA15–2X/G24N9Z4/M 0 811 403 105 4WRBA10EA32–2X/G24N9Z4/M 0 811 403 020
4WRBA6EA30–2X/G24N9Z4/M 0 811 403 104 4WRBA10EA64–2X/G24N9Z4/M 0 811 403 021
4WRBA6XA30–2X/G24N9Z4/M–892 0 811 403 108
4WRBA6XA30–2X/G24NZ4/M–893
0 811 403 109
4WRBA A 2X G24 Z4 M *
Symbols
Actuation: A-side ..E.. ..= X..
1)
..= X..
2)
P
NC
T
a0
AB
NO
PT
a0
AB
= E
P
NC
T
a0
AB
NO NO
Hydraulics Bosch Rexroth AGRE 29047/09.05 4WRBA..EA..
3/16
Function, sectional diagram
General
Type 4WRBA 4/2 proportional directional control valves
without position control are also known as “throttle valves”.
These directly controlled valves are available in nominal
sizes 6 and 10.
Hysteresis is < 4 % for the NG6 and < 5 % for the NG10.
The valve amplifier electronics are available in various designs
for 2.5 A solenoids. The operating limits are largely determined
by the available magnetic force, see characteristic curves for
single or double flow.
Basic principle
To adjust the oil flow rate, a setpoint is set in the trigger
electronics. Based on this setpoint, the electronics control the
solenoid coil with regulated PWM (pulse-width-modulated)
current.
The current is modulated with a dither, ensuring low hysteresis.
The proportional solenoid converts the current to a mechanical
force, with which an armature plunger acts on a spool to push
against the spring. If the magnetic force and the spring force
are the same, this produces a spool position in conformity
with the spring characteristic curve. If the drop in pressure is
minimal (< 30 bar) the throttling function takes effect, if the
pressure drop is greater, the operating limits (see characteristic
curves) must be observed.
The pressure drop at the valve is reliably limited by the use of
an external pressure compensator or regulating pump.
Control solenoid
Valve body
Manual adjustment
4WRBA..EA..N..
Manual auxiliary
override
NG6
NG10
Manual auxiliary
override
Valve body
Control solenoid
4/16 Bosch Rexroth AG Hydraulics 4WRBA..EA.. RE 29047/09.05
Testing and service equipment
Test box type VT-PE-TB1, see RE 30063
Test adapter type VT-PA-3, see RE 30070
Current measuring adapter type VT-PA-5, see RE 30073
Accessories
Type Material Number
(4x) f ISO 4762-M5x30-10.9
Cheese-head bolts NG6
2 910 151 166
(4x) f ISO 4762-M6x35-10.9
Cheese-head bolts NG10
2 910 151 207
Plug VT-SSPA1-525-20/V0 (2.5 A)
RE 30264 0 811 405 143
VT-SSPA1-525-20/V0/I (2.5 A)
0 811 405 145
Module VT-MSPA1-525-10/V0 (2.5 A)
RE 30222 0 811 405 127
Europe card VT-VSPA1-525-10/V0/RTP (2.5 A)
RE 30109 0 811 405 079
Plug-in connector
2P+PE
Plug-in connector 2P+PE (M16x1.5)
included in scope of delivery, see also RE 08008
Hydraulics Bosch Rexroth AGRE 29047/09.05 4WRBA..EA..
5/16
Technical data
General
Construction Spool-type valve
Actuation Proportional solenoid without position control,
external amplifier
Connection type Subplate, mounting hole configuration NG6 (ISO 4401-03-02-0-94),
NG10 (ISO 4401-05-04-0-94)
Mounting position Optional
Ambient temperature range °C –20...+50
Weight NG61 kg 2.0 (2.2 with manual adjustment)
NG10 kg 6.9
Vibration resistance, test condition
Max. 25 g, shaken in 3 dimensions (24 h)
Hydraulic (measured with HLP 46,
oil
= 40 °C ±5 °C)
Pressure fluid Hydraulic oil to DIN 51524...535, other fluids after prior consultation
Viscosity range recommended mm
2
/s 20...100
max. permitted mm
2
/s 10...800
Pressure fluid temperature range °C –20...+80
Maximum permitted degree of
contamination of pressure fluid
Purity class to ISO 4406 (c)
Class 18/16/13
1)
Direction of flow, see symbol
NG6 NG10
Nominal flow rate (at ∆p = 5 bar)* l/min
14 28 (per channel) 32 63 (per channel)
Leakage per metering I
m
= 0
edge (∆p = 100 bar) cm
3
/min
80 80
I
m
= max.
cm
3
/min
150
Max. working pressure bar Port P, A, B: 315
Port T: 250
1)
The purity classes stated for the components must be
complied with in hydraulic systems. Effective filtration
prevents problems and also extends the service life of
components.
For a selection of filters, see catalog sheets RE 50070,
RE 50076 and RE 50081.
* Nominal flow
This is always based on a pressure differential of ∆p = 5 bar
at the throttling point.
Where other pressure differentials are involved, the flow is
calculated according to the following formula:
∆p
X
Q
x
= Q
nom
·
冪莦
5
However, the operating limits must be borne in mind.
If they are exceeded, the ensuing flow forces lead to
uncontrollable spool movements. Pressure compensators
are used to reliably limit ∆p.
6/16 Bosch Rexroth AG Hydraulics 4WRBA..EA.. RE 29047/09.05
Technical data
Electrical
Cyclic duration factor % 100
Degree of protection IP 65 to DIN 40050 and IEC 14434/5
Solenoid connection Unit plug DIN 43650/ISO 4400, M16x1.5 (2P+PE)
Valve with solenoid type
NG6 NG10
Max. solenoid current I
max
A
2.5 2.5
Coil resistance R
20
3 5.8
Max. power consumption at 100 % VA
load and operating temperature
30 55
Static/Dynamic
1)
Hysteresis % 4 5
Range of inversion % 3 3
Manufacturing tolerance % 艐10 艐10
Response time 100 % signal change ms On 70
Off 70
100
1)
All characteristic values ascertained using amplifier 0 811 405 079 for the 2.5 A solenoid.
Hydraulics Bosch Rexroth AGRE 29047/09.05 4WRBA..EA..
7/16
Valve with external trigger electronics (plug, RE 30264)
Circuit diagram/pin assignment
1)
Version with 0...+10 V signal
2)
Version with 4...20 mA signal
Connection/adjustment
P1 – Ramp time
P2 – Sensitivity
P3 – Zero
P4 – Dither frequency
St1 – Terminal
LED – U
B
display
8/16 Bosch Rexroth AG Hydraulics 4WRBA..EA.. RE 29047/09.05
Valve with external trigger electronics (module, RE 30222)
Circuit diagram/pin assignment
Front view/adjustment
Hydraulics Bosch Rexroth AGRE 29047/09.05 4WRBA..EA..
9/16
Valve with external trigger electronics (europe card, RE 30109)
Circuit diagram/pin assignment
10/16 Bosch Rexroth AG Hydraulics 4WRBA..EA.. RE 29047/09.05
Characteristic curves NG6 (measured with HLP 46,
oil
= 40 °C ±5 °C)
Valve amplifier
1)
Zero adjustment
2)
Sensitivity adjustment
3)
Version: U
E
= 0...+10 V
4)
Version: I
E
= 4...20 mA
U
E
3
)
[V]
I
E
4
)
[mA]
4
4,4 7,5 10,6 13,8 16,9 20
Q
nom
= 28 l/min
Q
nom
= 14, 28 l/min
I
E
4
)
[mA]
U
E
3
)
[V]
4
4,4 7,5 10,6 13,8 16,9 20
Hydraulics Bosch Rexroth AGRE 29047/09.05 4WRBA..EA..
11/16
Characteristic curves NG6 (measured with HLP 46,
oil
= 40 °C ±5 °C)
Operating limits
12/16 Bosch Rexroth AG Hydraulics 4WRBA..EA.. RE 29047/09.05
Characteristic curves NG10 (measured with HLP 46,
oil
= 40 °C ±5 °C)
Q
nom
= 32, 63 l/min
Valve amplifier
1)
Zero adjustment
2)
Sensitivity adjustment
3)
Version: U
E
= 0...+10 V
4)
Version: I
E
= 4...20 mA
47,54,4 10,6 13,8 16,9 20
U
E
3
)
[V]
I
E
4
)
[mA]
Hydraulics Bosch Rexroth AGRE 29047/09.05 4WRBA..EA..
13/16
Characteristic curves NG10 (measured with HLP 46,
oil
= 40 °C ±5 °C)
Operating limits
14/16 Bosch Rexroth AG Hydraulics 4WRBA..EA.. RE 29047/09.05
Unit dimensions NG6 (nominal dimensions in mm)
Required surface quality of mating
component
Mounting hole configuration: NG6 (ISO 4401-03-02-0-94)
For subplates see catalog sheet RE 45053
1)
Deviates from standard
2)
Thread depth:
Ferrous metal 1.5 x Ø
Non-ferrous 2 x Ø
PATBF
1
F
2
F
3
F
4
21.5
12.5 21.5 30.2 0 40.5 40.5 0
25.9 15.5 5.1 15.5 0 –0.75
31.75
31
8
1)
8
1)
8
1)
8
1)
M5
2)
M5
2)
M5
2)
M5
2)
Manual adjustment
X
Y
Hydraulics Bosch Rexroth AGRE 29047/09.05 4WRBA..EA..
15/16
Unit dimensions NG10 (nominal dimensions in mm)
Mounting hole configuration: NG10 (ISO 4401-05-04-0-94)
For subplates see catalog sheet RE 45055
1)
Deviates from standard
2)
Thread depth:
Ferrous metal 1.5 x Ø*
Non-ferrous 2 x Ø
* NG10 min. 10.5 mm
PATBF
1
F
2
F
3
F
4
R
27 16.7 3.2
37.3
0 54 54 0 50.8
6.3
21.4
32.5
21.4
0 0 46 46 32.5
10.5
1)
10.5
1)
10.5
1)
10.5
1)
M6
2)
M6
2)
M6
2)
M6
2)
10.5
1)
Required surface quality of mating
component
X
Y
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
Telefax +49 (0) 93 52 / 18-23 58
documentation@boschrexroth.de
www.boschrexroth.de
© This document, as well as the data, specifications and other information
set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
reproduced or given to third parties without its consent.
The data specified above only serve to describe the product. No state-
ments concerning a certain condition or suitability for a certain application
can be derived from our information. The information given does not release
the user from the obligation of own judgement and verification. It must be
remembered that our products are subject to a natural process of wear and
aging.
16/16 Bosch Rexroth AG Hydraulics 4WRBA..EA.. RE 29047/09.05
Notes
