RE 18301-01/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements
L8_10… (ED1-Z)
RE 18301-01
Edition: 02.2016
Replaces: 07.12
4/3 - 4/2 Directional valve elements
with or without secondary relief valves,
with or without LS connections
RE 18301-01
Edition: 02.2016
Replaces: 07.2012
General specifi cations
Valve elements with solenoid operated directional spool.
Control spools operated by solenoids with removable
coils.
In the de-energized condition, the control spool is held
in the central position by return springs.
Wet pin tubes for DC coils, with push rod for mechanical
override; nickel plated surface.
Coils can be rotated 360° around the tube; they can be
energized by AC current through special connectors with
rectifi er (RAC).
Manual override (push-button or screw type) available
as option.
Size 6
Series 00
Maximum operating pressure 310 bar (4500 psi)
Maximum fl ow 30 l/min (7.9 gpm)
Port connections G 3/8 - SAE6
Contents
Ordering details 2
Symbols 2
Functional description 4
Technical data 4
Characteristic curves 6
External dimensions and fi ttings 7
Electric connection 10
L8_10… (ED1-Z)
Bosch Rexroth AG, RE 18301-01/02.2016
2 L8_10… (ED1-Z) | 4/3 - 4/2 Directional valve elements
Ordering details
Ordering details
01 02 03 04 05 06 07 08 09 10
L 8 _ 10 _ _ _ _ _ _ _ _ _ _ _ _
Family
01 Directional Valve elements ED
L
Type
02 Size 6
8
Confi guration
03 Standard
0
With secondary valve on A
3)
1
With secondary valve on B
3)
2
With secondary valves on A and B
3
With channels for Load Sensing
4
Coil type
04 C36
10
Spool variants
1)
05 4/3 operated on both sides a and b
_ 2 _ _
4/2 operated on side a only
_ 3 _ _
4/2 operated on side b only
_ 4 _ _
Voltage supply 31 07 03 04 01 00
06 Without coil
–––––
●
00
12V DC
●●●●●
–OB
13V DC
–
●
––
●
–AD
24V DC
●●●●●
–OC
27V DC
–
●
––
●
–AC
48V DC
––
●
–
●
–OD
110V DC
––––
●
–OE
24V AC (21.5 DC)
––––
●
–OV
110V AC (98 DC)
––––
●
–OW
230V AC (207 DC)
––––
●
–OZ
Electric connections
07 Without coils
00
With coils, without mating connector DIN EN 175301-803
01
5)
With coils, with bi-directional diode, without mating
connector vertical Amp-Junior
03
With coils, with bi-directional diode, without mating
connector horizontal Amp-Junior
04
With coils, with bi-directional diode, without mating
connector DT04-2P
07
With coils and bipolar sheathed lead 350mm (13,8 in)
long with bi-directional diode
31
Ports
08 G 3/8 DIN 3852
0
9/16-18 UNF 2-B (SAE6)
1
Secondary valves setting
09 50-210 bar (725-3045 psi)
0
4)
100-310 bar (1450-4500 psi)
1
25-50 bar (362-725 psi)
2
50-100 bar (725-1450 psi)
3
Options
10 No options
No
code
Lever type manual override
2)
_ _
Push-button type manual override
0P
Screw type manual override
0F
●
= Available
–
= Not available
Symbols
AB
P
T
AB
P
T
AB
P
T
= 0
= 1
= 2
= 3
= 4
AB
P
T
AB
LS
T
P
1) The required hydraulic symbol and spool variant can be chosen by
consulting page 3.
2) Available only for A, B, E and F spool confi gurations. See page 9 for
code details.
3) The secondary valves have a maximum fl ow capacity of 6 l/min (1.6
gpm).
4) Without secondary valves (versions L80__; L84__), the standard
confi guration corresponds to “0”.
5) For connectors ordering code see data sheet RE 18325-90.
RE 18301-01/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements | L8_10… (ED1-Z)
Ordering details
3
Spool variants
AB
_ 2 _ _
P
T
a0b
ab
=A301
=B301
=C301
=D301
=E301
=N301
AB
_ 3 _ _
P
T
a0
a
AB
P
T
0b
b
=X301
=Y301
=A201
=B201
=C201
=D201
=E201
=K209
=A401
=B401
=K201
=C401
=D401
=E401
=N401
=X401
=Y401
Bosch Rexroth AG, RE 18301-01/02.2016
4 L8_10… (ED1-Z) | 4/3 - 4/2 Directional valve elements
Functional description
Functional description
675412456733
The sandwich plate design directional valve elements
L8_10… are compact direct operated solenoid valves
which control the start, the stop and the direction of the oil
fl ow. These elements basically consist of a stackable
housing (1) with a control spool (2), one or two solenoids
(5), and one or two return springs (4).
When energized, the force of the solenoid (5) pushes the
control spool (2) from its neutral-central position “0” to the
required end position “a” or “b”, and the required fl ow from
P to A (with B to T), or P to B (with A to T) is achieved.
Once the solenoid is de-energized, the return spring (4)
pushes the spool thrust washer (3) back against the
housing and the spool returns in its neutral-central
position.
Each coil is fastened to the solenoid tube by a ring nut (6).
A pin (7) allows to push the spool (2) in emergency
conditions, when the solenoid cannot be energized, like in
case of voltage shortage.
Technical data
General
Valve element with 2 solenoids kg (lbs) 1.55 (3.42)
Valve element with 1 solenoid kg (lbs) 1.25 (2.76)
Valve element with 2 solenoids,
with lever type emergency
kg (lbs) 1.9 (4.2)
Valve element with 1 solenoid,
with lever type emergency
kg (lbs) 1.6 (3.5)
Ambient Temperature °C (°F) –20....+50 (-4....+122) (NBR seals)
Hydraulic
Maximum pressure at P, A and B ports bar (psi) 310 (4500)
Maximum pressure at T bar (psi) 250 (3625)
Max pressure,
with lever type emergency at T
bar (psi) 200 (2900)
Maximum inlet fl ow l/min (gpm) 30 (7.9)
Hydraulic fl uid
General properties: it must have physical lubricating
and chemical properties suitable for use in hydraulic
systems such as, for example:
Mineral oil based hydraulic fl uids HL (DIN 51524 part 1).
Mineral oil based hydraulic fl uids HLP (DIN 51524 part 2).
For use of environmentally acceptable fl uids (vegetable or
polyglycol base) please consult us.
Fluid Temperature °C (°F) –20....+80 (-4....+176) (NBR seals)
Permissible degree of fl uid contamination ISO 4572: β
x
≥75 X=12...15
ISO 4406: class 20/18/15
NAS 1638: class 9
Viscosity range mm
2
/s 5....420
RE 18301-01/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements | L8_10… (ED1-Z)
Technical data
5
Electrical
Voltage type DC (AC only with RAC connection)
Voltage tolerance (nominal voltage) % -10 .... +10
Duty Continuous, with ambient temperature ≤ 50°C (122°F)
Coil wire temperature not to be exceeded °C (°F) 150 (302)
Insulation class H
Compliance with Low Voltage Directive LVD 73/23/EC (2006/95/EC), 2004/108/EC
Coil weight with connection EN 175301-803 kg (lbs) 0.215 (0.44)
Voltage V 12 13 24 27 48 110 24
+RAC
(21,5)
110
+RAC
(98)
230
+RAC
(207)
Voltage type DC DC DC DC DC DC DC DC DC
Power consumption W 26 26 26 26 26 26 29 29 29
Current (nominal at 20 °C (68 °F)) A 2.15 2.00 1.10 1.00 0.54 0.27 1.20 0.29 0.14
Resistance (nominal at 20 °C (68 °F)) Ω 5.5 6.5 22 28 89 413 18 338 1430
Note
For applications with different specifi cations consult us
Code Voltage [V] Connector type Coil description Marking Coil Mat no.
=OB 01 12 DC EN 175301-803
(Ex. DIN 43650)
C3601 12DC 12 DC R933000044
=OB 03 12 DC AMP JUNIOR C3603 12DC 12 DC R933000047
=OB 04 12 DC AMP JUNIOR Horizontal C3604 12DC 12 DC R933002913
=OB 07 12 DC DEUTSCH DT 04-2P C3607 12DC 12 DC R933000048
=OB 31 12 DC Cable 350 mm long C3631 12DC 12 DC R933000045
=AD 01 13 DC EN 175301-803
(Ex. DIN 43650)
C3601 13DC 13 DC R933000051
=AD 07 13 DC DEUTSCH DT 04-2P C3607 13DC 13 DC R933000049
=OC 01 24 DC EN 175301-803
(Ex. DIN 43650)
C3601 24DC 24 DC R933000053
=OC 03 24 DC AMP JUNIOR C3603 24DC 24 DC R933000057
=OC 04 24 DC AMP JUNIOR Horizontal C3604 24DC 24 DC R933002914
=OC 07 24 DC DEUTSCH DT 04-2P C3607 24DC 24 DC R933000058
=OC 31 24 DC Cable 350 mm long C3637 24DC 24 DC R933000055
=AC 01 27 DC EN 175301-803
(Ex. DIN 43650)
C3601 27DC 27 DC R933000056
=AC 07 27 DC DEUTSCH DT 04-2P C3607 27DC 27 DC R933000050
=OD 01 48 DC EN 175301-803
(Ex. DIN 43650)
C3601 48DC 48 DC R933000059
=OD 04 48 DC AMP JUNIOR Horizontal C3604 48DC 48 DC R933002915
=OE 01 110 DC EN 175301-803
(Ex. DIN 43650)
C3601 110DC 110 DC R933000061
=OV 01 24 RAC EN 175301-803
(Ex. DIN 43650)
C3601 21.5DC 21.5 DC R933000054
=OW 01 110 RAC EN 175301-803
(Ex. DIN 43650)
C3601 98DC 98 DC R933000060
=OZ 01 230 RAC EN 175301-803
(Ex. DIN 43650)
C3601 207DC 207 DC R933000062
Bosch Rexroth AG, RE 18301-01/02.2016
6 L8_10… (ED1-Z) | 4/3 - 4/2 Directional valve elements
Characteristic curves
Lowest pressure setting curve for secondary valves
bar
60
50
40
30
20
10
0
0 1 2 3 4 5 6 l/min
0 0.3 0.6 0.9 1.2 1.6 gpm
psi
900
750
600
450
300
150
0
0
1
3
2
Pressure p
Flow Q
Secondary valve setting Curve no.
50-210 bar (700-2950 psi) 0
100-310 bar (1400-4500 psi) 1
25-50 bar (350-700 psi) 2
50-100 bar (700-2950 psi) 3
Characteristic curves
1
2
3
4
5
6
18
16
14
12
10
8
6
4
2
0
0 5 10 15 20 25 30 l/min
0 1 2 3 4 5 6 7 7.9 gpm
260
250
200
150
100
50
0
barpsi
Pressure Δp
Flow Q
Spool Variant Curve no.
P>T P>A P>B A>T B>T
A201, A301, A401 32211
X301, X401 4455
Y301, Y401 4455
B201, B301, B401 5555
C201, C301, C401 54466
D201, D301, D401 5544
E201, E301, E401 4466
N301, N401 4 4
K201, K209 4444
Measured with hydraulic fl uid ISO-VG32 at 45° ±5 °C
(113° ±9 °F); ambient temperature 20 °C (68 °F).
Performance limits
1
2
3
bar
350
300
250
200
150
100
50
0
0 5 10 15 20 25 30 l/min
0 1 2 3 4 5 6 7 7.9 gpm
psi
5100
5000
4000
3000
2000
1000
0
Pressure p
Flow Q
Spool Variant Curve no.
A201-A301-A401-B201-B301-B401-Y401-X401-X301-
Y301-C201-C301-C401-D201-D301-D401
1
K201-E201-E301-E401 2
N301, N401 3
The performance curves are measured with fl ow going
across and coming back, like P>A and B>T. With “lever
type” emergency control, the performance limits are
slightly lower.
Minimum fl ow for effi ciency of LS control
bar
60
50
40
30
20
10
0
0 1 2 3 4 5 6 l/min
0 0.3 0.6 0.9 1.2 1.6 gpm
psi
900
750
600
450
300
150
0
Pressure p
Flow Q
RE 18301-01/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements | L8_10… (ED1-Z)
External dimensions and fi ttings
7
Dimensions [mm (inches)]
External dimensions and fi ttings
()
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1 Solenoid tube Ø 14 mm (0.55 inch).
3 Ring nut for coil locking (Ø 24 mm); torque 3-4Nm (2.2-3 ft-lb).
4 Flange specifi cations for coupling to ED intermediate elements.
5 For tie rod and tightening torque information see data sheet
RE 18301-90.
6 Four threaded holes M5 for fi tting a secondary fl angeable
element. Bolts M5 with recommended strength class DIN 8.8:
torque 5-6 Nm (3.6-4.4 ft-lb).
7 A and B ports.
8 O-Rings for P and T ports.
9 Clearance needed for connector removal.
10 Identifi cation label.
Bosch Rexroth AG, RE 18301-01/02.2016
8 L8_10… (ED1-Z) | 4/3 - 4/2 Directional valve elements
External dimensions and fi ttings
Dimensions [mm (inches)]
()
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11 Flange specifi cations for coupling to ED intermediate elements.
12 For tie rod and tightening torque information see data sheet
RE 18301-90.
13 Optional push-button manual override, 0P type, for spool opening:
it is pressure stuck to the ring nut for coil locking.
Mat no. R933000042.
14 Optional screw type manual override, 0F type, for spool opening:
it is screwed (torque 6-7 (4.4-5.2 ft-lb)) to the tube as
replacement of the coil ring nut. Mat no. R933000021..
RE 18301-01/02.2016, Bosch Rexroth AG
4/3 - 4/2 Directional valve elements | L8_10… (ED1-Z)
External dimensions and fi ttings
9
Dimensions [mm (inches)]
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1 Ordering Details: HA (if fi tted to side A)
or HB (if fi tted to side B)
2 Ordering Details: VA (if fi tted to side A)
or VB (if fi tted to side B)
3 Ordering Details: H1 (if fi tted to side A)
or H9 (if fi tted to side B)
4 Ordering Details: V1 (if fi tted to side A)
or V9 (if fi tted to side B)
5 Ordering Details: XA (if fi tted to side A)
or XB (if fi tted to side B)
6 Ordering Details: X1 (if fi tted to side A)
or X9 (if fi tted to side B)
10
Bosch Rexroth AG, RE 18301-01/02.2016
Bosch Rexroth Oil Control S.p.A.
Oleodinamica LC Division
Via Artigianale Sedrio, 12
42030 Vezzano sul Crostolo
Reggio Emilia - Italy
Tel. +39 0522 601 801
Fax +39 0522 606 226 / 601 802
compact-hydraulics-cdv@boschrexroth.com
www.boschrexroth.com/compacthydraulics
© This document, as well as the data, specifi cations and other information
set forth in it, are the exclusive property of Bosch Rexroth Oil Control S.p.a..
It may not be reproduced or given to third parties without its consent.
The data specifi ed above only serve to describe the product. No statements
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 verifi cation. It must be
remembered that our products are subject to a natural process of wear and
aging.
Subject to change.
L8_10… (ED1-Z) | 4/3 - 4/2 Directional valve elements
Electric connection
Dimensions [mm (inches)]
Electric connection
00 01
(
(
(
(
(
(
(
(
(
(
(
(
03
Protection class: IP 65 with female connector
properly fi tted (see drawing).
04
Protection class: IP 65 with female connector
properly fi tted (see drawing).
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
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(
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(
(
(
(
31 07
Protection class: IP 69 K with female connector
properly fi tted (see drawing).
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
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