1/12
Information on available spare parts:
www.boschrexroth.com/spc
Proportional flow control valve,
2-way version
Type 2FRE
Sizes 10 and 16
Component series 4X
Maximum operating pressure 315 bar
Maximum flow 160 l/min
RE 29190/02.07
Replaces: 02.06
Table of contents
Contents Page
Features 1
Ordering code 2
Standard types 2
Symbols 3
Function, section 3
Technical data 4, 5
Electrical connection, cable sockets 6
Characteristic curves 7 to 9
Unit dimensions 10, 12
Features
– Valve with pressure compensator for the pressure-compen-
sated control of a flow
– Actuation by means of proportional solenoid
– For subplate mounting:
Porting pattern to ISO 6263, see page 10
Subplates according to data sheet RE 45066
(separate order), see page 10
– With electrical closed-loop position control of the metering
orifice
– The position transducer coil can be axially shifted, which
simplifies zero point balancing of the metering orifice (electri-
cal-hydraulic) without the need for intervening into the control
electronics
– Low manufacturing tolerances of the valve and the electrical
amplifier types VT-VRPA1-151-1X
(analogue) and amplifier
module Typ VT-MRPA1-151-1X (analogue), separate order,
see page 5
– Flow control in both directions due to rectifier sandwich plate
H5570_d
Inhalt
Table of contents 1
Features
1
Ordering code: Proportional flow control valve 2
Standard types
2
Ordering code: Rectifier sandwich plate 2
Symbols
3
Function, section
3
Technical data (for applications outside these parametes, please
consult us!)
4
Technical data (for applications outside these parametes, please
consult us!)
5
Electrical connection, cable sockets (nominal dimensions in mm)
6
Characteristic curves (measured at ν = 41 mm
2
/s and
= 50
°C; p
nom
= 50 bar; Amplitude 0 → 100 %; size 10 type 60L / size
16 type 160L)
7
Characteristic curves (measured at ν = 41 mm
2
/s and
= 50
°C)
8
Characteristic curves (measured at ν = 41 mm
2
/s and = 50
°C)
9
Unit dimensions: Proportional flow control valve (nominal dimen-
sions in mm) 1
0
Unit dimensions: Valve fixing screws (separate order) 11
Unit dimensions: Rectifier sandwich plate (nominal dimensions in
mm) 1
2
2/12 Bosch Rexroth AG Hydraulics
2FRE RE 29190/02.07
Size 10 = 10
Size 16
= 16
Component series 40 to 49
= 4X
(40 to 49: unchanged installation and connection dimensions)
Further details in clear text
M = NBR seals, suitable for
mineral oil (HL, HLP) to DIN 51524
V = FKM seals
Electrical connection
K4 = Without cable socket,
with component plug to DIN EN 175301-803-A
for proportional solenoid and
GSA20 for position transducer
Cable sockets – separate order
see page 6
B =
With pressure compensator stroke limiter
2FRE
4X
B
K4
*
Nominal flow A → B / flow characteristics
Size 10 Size 16
Linear Progressive with rapid speed
(fine control rnge)
Linear
Up to 10 l/min
= 10L
With rapid speed
= 5QE
Up to 80 l/min
= 80L
Up to 16 l/min
= 16L
= 5Q
Up to 100 l/min
= 100L
Up to 25 l/min
= 25L
= 10Q
Up to 125 l/min
= 125L
Up to 50 l/min
= 50L
= 16Q
Up to 160 l/min
= 160L
Up to 60 l/min
= 60L
= 25Q
Standard types
Size 10 Size 16
Size 10 = 10
Size 16
= 16
Component series 20 to 29
= 2X
(20 to 29:
unchanged installation and connection dimensions)
Further details in clear text
No code = NBR seals, suitable for
mineral oil (HL, HLP) to DIN 51524
V = FKM seals
Z4S 2X
*
Ordering code: Proportional flow control valve
Type
material number
2FRE 10-4X/10LBK4M R900915817
2FRE 10-4X/16LBK4M R900915825
2FRE 10-4X/25LBK4M R900915820
2FRE 10-4X/50LBK4M R900915815
Ordering code: Rectifier sandwich plate
Type material number
2FRE 16-4X/100LBK4M R900915819
2FRE 16-4X/160LBK4M R900915814
Type material number
Z4S 10-2X/ R900413377
Z4S 10-2X/V R900413379
Size 10 Size 16
Type material number
Z4S 16-2X/ R900425901
Z4S 16-2X/V
R900427362
A B
A
B
2
1
3
5
4
6
A B
1
2
A B
1
2
A B
1
2
Hydraulics Bosch Rexroth AG
RE 29190/02.07
2FRE
3/12
Proportional flow control valves of type 2FRE … feature a 2-
way function. They can control a flow, which is determined by
an electrical command value, in a pressure- and largely temper-
ature-compensated way.
They basically consist of housing (1), proportional solenoid with
inductive position transducer (2), metering orifice (3), pressure
compensator (4), stroke limiter (5) and check valve (6).
The setting of the flow is determined by the setting (0 to
100 %) on the command value potentiometer. The selected
command value causes metering orifice (3) to be adjusted via
the amplifier and the proportional solenoid. The inductive po-
sition transducer senses the position of metering orifice (3).
Any deviations from the command value are corrected by the
closed-loop position control.
Pressure compensator (4) keeps the pressure differential
across metering orifice (3) always at a constant value. This en-
sures pressure compensation of the flow.
If the current regulator is used only within a range, which is
significantly smaller than the maximum nominal flow provided
from the valve, the response time of pressure compensator (4)
can be shortened by limiting the pressure compensator stroke.
Thus, undesirable start-up jumps can be reduced.
If the grub screw of stroke limiter (5) is at the left-hand limit
stop (turned out), the pressure compensator stroke is not lim-
ited.
The low temperature drift is a result of the favourable design of
the metering orifice.
At a command value of 0 % the metering orifice is closed.
In the event of a power failure or cable break on the inductive
position transducer, the metering orifice closes.
Starting from a 0 % command value, a jump-free start-up is
possible. The metering orifice can be opened and closed with
a delay provided by two ramps in the electrical amplifier.
Check valve (6) allows the free return flow from B to A.
The supply and return flow to and from the actuator can be
controlled with the help of an additional rectifier sandwich plate
of type Z4S… under the proportional flow control valve.
Function, section
Symbols
Proportional flow control valve
Simplified Detailed
Rectifier sandwich plate
= component side,
1 2
= plate side
4/12 Bosch Rexroth AG Hydraulics
2FRE RE 29190/02.07
Technical data (for applications outside these parametes, please consult us!)
1)
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 0086 and RE 50088.
General
Size
Size
10
16
Weight
– Proportional flow control valve
kg 6.1
8.5
– Rectifier sandwich plate
kg
3.2
9.3
Installation orientation
Optional
Storage temperature range
°C
– 20 to + 80
Ambient temperature range
°C – 20 to + 70
Hydraulic – proportional flow control valve (measured with HLP46 and at
oil
= 40 °C ± 5 °C)
Size
Size
10
16
Max. operating pressure
in port A
bar Up to 315
Max. flow – Linear
l/min 10 16
25
50 60
80 100 125 160
– Progressive with rapid speed
l/min 40
–
Minimum pressure differential
bar
3 to 8 6 to 10
∆p with free flow B → A
bar see diagram on page 9
Flow control
Temperature drift
– Hydraulic + electrical q
V
/°C
%
0.1 of
q
Vmax
–
Pressure-compensated (up to p = 315 bar)
%
± 2 of q
Vmax
Hydraulic fluid Mineral oil (HL, HLP) to DIN 51524
Further hydraulic fluids on enquiry!
Hydraulic fluid temperature range °C – 20 to + 80
Viscosity range mm
2
/s 15 to 380
Max. permissible degree of contamination of the hy-
draulic fluid - cleanliness class to ISO 4406 (c)
Class 20/18/15
1)
Hysteresis %
< ± 1 of
q
Vmax
Repeatability %
< 1 of
q
Vmax
Manufacturing
tolerance
Valve % ≤ ± 2 at 33 % command value
≤ ± 5 at 100 % command value
– Amplifier VT-VRPA1-151 (analogue)
% Amplifier must be matched to valve
2)
– Amplifier module VT-MRPA1-151 (analogue)
% Amplifier must be matched to valve
2)
Hydraulic – rectifier sandwich plate
Size Size
10 16
Operating pressure
bar Up to 315
Cracking pressure
bar 1.5
Nominal flow
l/min
60 160
2)
Due to tolerances of the oscillator frequency (position trans-
ducer supply), amplifiers are subject to tolerances.
When installing new systems or replacing an amplifier, the
amplifier settings may have to be adjusted.
Hydraulics Bosch Rexroth AG
RE 29190/02.07 2FRE
5/12
Technical data (for applications outside these parametes, please consult us!)
Electrical – proportional solenoid
Type of voltage
DC
Coil resistance
– Cold value at 20 °C
Ω
10
– Max. hot value
Ω
13.9
Duty cycle
% 100
Max. current per solenoid
A 1.51
Electrical connection With component plug to DIN EN 175301-803-A
Cable socket to DIN EN 175301-803-A
1)
Type of protection to EN 60529
IP 65
2)
, with cable socket mounted and locked
Electrical – inductive position transducer
Coil resistance
Total resistance of coils between 1 and 2
2 and
and 1
at 20 °C (see page 6)
Ω
31.5
45.5 31.5
Electrical connection
With component plug GSA20
Cable socket GM209N (Pg 9)
1)
Inductance mH 6 to 8
Oscillator frequency kHz 2.5
Electrical position measuring system Differential throttle
Nominal stroke mm 4
Type of protection to EN 60529 IP 65
2)
, with cable socket mounted and locked
Control electronics (separate order)
Associated amplifier in Euro-card format Type VT-VRPA1-151-1X (analogue) to data sheet RE 30118
Associated amplifier module Type VT-MRPA1-151-1X (analogue) to data sheet RE 30221
1)
Separate order, see page 6
2)
Due to the surface temperatures of solenoid coils, observe
European standards DIN EN563 and DIN EN982!
PE
1 2
PE
1
2
30
27,5
30
36
53
27,5
Ø22,5
Ø4,5 ... 10
1
2
20,8
34
~51
28,6
Ø18
Ø4,5 ... 7,0
6/12 Bosch Rexroth AG Hydraulics
2FRE
RE 29190/02.07
Electrical connection, cable sockets (nominal dimensions in mm)
Inductive position transducer
Proportional solenoid
Connection to component plug Connection to cable socket
Cable socket to DIN EN 175301-803-A
Separate order stating material no.
R901017011
(plastic version)
to amplifier
Shield
Cable socket Pg 9
Separate order stating material no. R900013674
(plastic version)
Seal material:
NBR
Seal material:
NBR
Hydraulics Bosch Rexroth AG
RE 29190/02.07
2FRE
7/12
Characteristic curves (measured at ν = 41 mm
2
/s and = 50 °C; p
nom
= 50 bar;
Amplitude 0 → 100 %; size 10 type 60L / size 16 type 160L)
Time in ms →
Time in ms →
Size 10
Size 16
Transient function at stepped command value change
Stroke in % →
Stroke in %→
Frequency response characteristic curves
Frequency in Hz →
Size 10
Size 16
Phase angle in ° →
Gain in dB →
8/12 Bosch Rexroth AG Hydraulics
2FRE
RE 29190/02.07
Characteristic curves (measured at ν = 41 mm
2
/s and = 50 °C)
Command value voltage in % →
Command value voltage in % →
Command value voltage in % →
Size 10
Size 10
Size 16
Flow in l/min →
Flow in l/min
→
Flow in l/min →
Dependence of flow on command value voltage (flow control from A → B)
Command value voltage in % →
Flow in l/min →
Size 10
Hydraulics Bosch Rexroth AG
RE 29190/02.07
2FRE
9/12
Characteristic curves (measured at ν = 41 mm
2
/s and = 50 °C)
Flow in l/min → Flow in l/min →
Pressure differential in bar →
Pressure differential in bar →
Pressure differential across check valve B → A
Size 10
Metering orifice closed
Metering orifice open
Size 16
Metering orifice closed
Metering orifice open
Leakage flow from A → B
Size 10
Pressure differential from A to B in bar →
Leakage flow in cm
3
/min →
Size 16
Pressure differential from A to B in bar →
Leakage flow in cm
3
/min →
Rectifier sandwich plate
Pressure differential identical in both directions of flow
Flow from A → B (B → A)
Flow in l/min →
Pressure differential
in bar →
SIze 10
Size 16
Flow in l/min →
Pressure differential
in bar
→
0,01/100mm
Rzmax 4
5
10.1
8
10.2
9
6
A
B
B2
B1
11
B3
L2
L1
L3
L4
L5
ØD2
ØD1
L6
B4
B5
11.1
14
11.2
A
B
B6
B7
L7
L8
F4
F3
F1
F2
G2
G1
2
1
7
4
3.1
13
H3
H2
15
H1
Ø 6
15 67
H4
4
3.2
10/12 Bosch Rexroth AG Hydraulics
2FRE
RE 29190/02.07
Unit dimensions: Proportional flow control valve (nominal dimensions in mm)
Size
10
16
B1
95 123.5
B2
76 101.5
B3
9.5
11
B4
79.4 102.4
B5
–
0.8
B6
97 126
B7
10.5 12
ØD1
9
11
ØD2
15 18
H1
245
255.5
H2
200 210
H3
210 140
H4
48 51
Size
10 16
L1
102.5 123.5
L2
82.5 101.5
L3
10
11
L4
24 31
L5
62.5
72.5
L6
23.8
28.6
L7
105 126
L8
11 12
Required surface quality of
the valve contact face
1
Valve housing
2
Proportional solenoid with inductive position transducer
3.1
Cable socket for proportional solenoid;
separate order, see page 6
3.2
Cable socket for position transducer
(separate order, see page 6)
4
Space required to remove cable socket
5
Setscrew of pressure compensator limiter,
hexagon socket A/F 3, lock nut A/F 10
6
Valve fixing screws
(separate order, see page 11)
7
Identical seal rings for ports A and B
8
Port A
9
Port B
10.1
Locating pin for sizes 10 and 16
10.2
Locating pin for size 16
11.1
Locating bore for locating pin for sizes 10 and 16
11.2
Locating bore for locating pin for size 16
13
Nameplate
14
Machined valve mounting face,
Size 10 - position of ports to ISO 6263-06-05-0-97
Size 16 - position of ports to ISO 6263-09-05-0-97
Tolerances to: – General tolerances ISO 2768-mK
Subplates to data sheet RE 45066 and valve fixing screws
must be ordered separately.
Subplates: Size 10 Size 16
G279/01 (G1/2) G281/01 (G1)
G280/01 (G3/4) G282/01 (G1 1/4)
Hydraulics Bosch Rexroth AG
RE 29190/02.07
2FRE
11/12
Unit dimensions: Valve fixing screws (separate order)
Without rectifier sandwich plate
Size 10
The following valve fixing screws are recommended:
4 socket head cap screws to ISO 4762 - M8 x 60 - 10.9-flZn-240h-L
(Friction coefficient 0.09 to 0.14 to VDA 235-101);
tightening torque M
T
= 30 Nm ± 10%,
material no. R913000217
or
4 socket head cap screws to ISO 4762 - M8 x 60 - 10.9
(Friction coefficient 0.08 to 0.6 to VDI2230,
tempering, black);
tightening torque M
T
= 34 Nm ± 10%
Size 16
The following valve fixing screws are recommended:
4 socket head cap screws to ISO 4762 - M10 x 70 - 10.9-flZn-240h-L
(Friction coefficient 0.09 to 0.14 to VDA 235-101);
tightening torque M
T
= 64 Nm ± 10%,
material no. R913000126
or
4 socket head cap screws to ISO 4762 - M10 x 70 - 10.9
(Friction coefficient 0.08 to 0.16 to VDI 2230,
tempering, black);
tightening torque M
T
= 75 Nm ± 10%,
With rectifier sandwich plate
Size 10
The following valve fixing screws are recommended:
4 socket head cap screws to ISO 4762 - M8 x 120 - 10.9-flZn-240h-L
(Friction coefficient 0.09 to 0.14 to VDA 235-101);
tightening torque M
T
= 30 Nm ± 10%,
material no. R913000423
or
4 socket head cap screws to ISO 4762 - M8 x 120 - 10.9
(Friction coefficient 0.08 to 0.16 to VDI2230,
tempering, black);
tightening torque M
T
= 34 Nm ± 10%
Size 16
The following valve fixing screws are recommended:
4 socket head cap screws to ISO 4762 - M10 x 160 - 10.9-flZn-240h-L
(Friction coefficient 0.09 to 0.14 to VDA 235-101);
tightening torque M
T
= 64 Nm ± 10%,
material no. R913000072
or
4 socket head cap screws to ISO 4762 - M10 x 160 - 10.9
(Friction coefficient 0.08 to 0.6 to VDI 2230,
tempering, black);
tightening torque M
T
= 75 Nm ± 10%,
0,01/100mm
Rzmax 4
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Phone‚ +49 (0) 93 52 / 18-0
Fax +49 (0) 93 52 / 18-23 58
documentation@boschrexroth.de
www.boschrexroth.de
12/12 Bosch Rexroth AG Hydraulics
2FRE
RE 29190/02.07
© 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 judgment and verification. It
must be remembered that our products are subject to a natural process of
wear and aging.
Unit dimensions: Rectifier sandwich plate (nominal dimensions in mm)
1
Valve housing
6
Valve fixing screws
(separate order, see page 11)
7
Identical seal rings for A and B
8
Port A1 (A2)
9
Port B1 (B2)
10
Locating pin (position like items 11.1 and 11.2)
11.1
Locating bore for locating pin for sizes 10 and 16
11.2
Locating bore for locating pin for size 6
12
Rectifier sandwich plate
13.1
Nameplate (rectifier sandwich plate size 10)
13.2
Nameplate (rectifier sandwich plate size 16)
15
Subplate (separate order)
Size
10 16
B1
95 123.5
B2
76 101.5
B3
9.5
11
B4
79.4 102.4
B5
–
0.8
ØD1
9
11
H5
60
85
H6
30 40
L1
102.5 123.5
L2
82.5 101.5
L3
10
11
L6
23.8 28.6
Required surface quality of valve
contact face
Tolerances to:
– General tolerances ISO 2768-mK
Subplates to data sheet RE 45066 and valve fixing screws
must be ordered separately.
Subplates: Size 10 Size 16
G279/01 (G1/2) G281/01 (G1)
G280/01 (G3/4) G282/01 (G1 1/4)