1/10
2/2 directional seat valve,
direct operated
with solenoid actuation
Type KSDE (High Performance)
Component size 8
Component series B
Maximum operating pressure 500 bar
Maximum flow 5 l/min
RE 18136-12/10.11
Replaces: 06.08
Table of contents
Contents Page
Features 1
Ordering code 2
Valve types 2
Available coils 2
Function, section, symbols 3
Technical data 4, 5
Voltage tolerance against ambient temperature 6
Characteristic curves 6
Limits of performance 6
Unit dimensions 7
Mounting cavity 8
Available individual components 9
Features
– Direct operated directional seat valve with solenoid actuation,
tight on both sides
– Mounting cavity R/T-8A
– Blocked connection tight in a leak-free form
– Safe switching also with longer standstill periods
– Wet-pin DC solenoids
– Rotatable solenoid coil
H7077
Information on available spare parts:
www.boschrexroth.com/spc
Inhalt
Table of contents 1
Features 1
Ordering code (valve without coil)
1) 2
Valve types (without coil)
1) 2
Available coils (separate order)
1) 2
Function, section, symbols 3
Technical data (For applications outside these parameters,
please consult us!) 4
Technical data (For applications outside these parameters,
please consult us!) 5
Voltage tolerance against ambient temperature; duty cycle 6
Characteristic curves (measured with HLP46, ϑ
oil
= 40 °C ± 5
°C and 24 V coil) 6
Limits of performance (measured with HLP46, ϑ
oil
= 40 °C ± 5
°C and 24 V coil) 6
Unit dimensions (dimensions in mm) 7
Mounting cavity R/T-8A; 2 main ports; thread M16 x 1.5 (dimen-
sions in mm) 8
Available individual components 9
Notes 10
Notes 11
Notes 12
KSDE RE 18136-12/10.11
2/10 Bosch Rexroth AG Hydraulics
Ordering code (valve without coil)
1)
Directional seat valve, direct oper-
ated, electrically operated
Maximum operating pressure 500 bar = U
Maximum operating pressure 350 bar = R
Component size = 8
2 main ports
"R" (350 bar) "U" (500 bar)
Symbols
2
1
2
1
= N
2
1
2
1
= P
Further details in the plain text
Seal material
V = FKM seals
(other seals upon request)
Attention!
Observe compatibility of the seal with the
hydraulic fluid used!
N0 = Without manual override
N9 = With concealed manual override
N11 = With screwable manual override
(operation by knurled screw)
Version
Symbol N Symbol P
N0 N9 N11 N0 N9
R (350 bar) X – X X X
2)
U (500 bar) X – – X –
H = High-performance and mounting cavity
R/T-8A (see page 8)
B = Component series
KSDE 8 B H V
*
Operating pressure 500 bar
Spool
symbol Type Material no.
N KSDEU8NB/HN0V R901085007
P KSDEU8PB/HN0V R901085009
Available coils (separate order)
1)
Direct
voltage
DC
4)
Material no. for coil with connector
3)
"K4"
03pol (2+PE) DIN EN 175301-803
"K40"
02pol K40 DT 04-2PA, company Deutsch
"C4"
02pol C4/Z30 AMP Junior-Timer
12 V R900991678 R900729189 R900315818
24 V R900991121 R900729190 R900315819
1)
Complete valves with mounted coil on request
2)
Screwable manual override "N10" (actuation by means of
internal hexagon with lock nut), possible as separate order,
Material no. R901051231; ordering code "N9"!
Valve types (without coil)
1)
Operating pressure 350 bar
Spool
symbol Type Material no.
N
KSDER8NB/HN0V R901085000
KSDER8NB/HN11V R901207100
P
KSDER8PB/HN0V R901085005
KSDER8PB/HN9V R901207098
3)
Mating connectors (separate order), see data sheet 08006
4)
Other voltages upon request
4
2
1
23
1
(P)
(A)
5
6
RE 18136-12/10.11 KSDE
3/10Hydraulics Bosch Rexroth AG
Function, section, symbols
General
The 2/2 directional seat valves are direct operated, pressure-
compensated cartridge valves. They basically comprises
of screw-in section (1), solenoid (4) as well as closing ele-
ment (3) and compression spring (2).
Function
The initial position of the valve (normally open "P" or nor-
mally closed "N") is determined by the position of the closing
element (3) and the arrangement of the compression spring
(2). Due to the structural design, the 2/2 directional seat
valves are always pressure-compensated in relation to the
actuating forces. The main ports ① and ② can be loaded with
an operating pressure of 350/500 bar (see page 4).
Attention!
Flow is only admissible in the direction of the arrow (see sym-
bols)! With version "U" (operating pressure 500 bar), main
port ① must be connected with pump connection P!
With symbol "P", the closing element (3) is pressed onto the
seat by the solenoid (4), with symbol "N" by the compression
spring (2). The flow is blocked in a leak-free form.
The manual override allows for the the switching of the valve
without solenoid energization. It is available in concealed ver-
sion "N9" (5) or in screwable version "N11" (6) (see page 2).
Version "R" (350 bar)
Symbol "N"
Normally closed
Symbol "P"
Normally open
2
1
2
1
Version "U" (500 bar)
Symbol "N"
Normally closed
Symbol "P"
Normally open
2
1
2
1
Version "K4"
(with mating connector)
Version "C4"
Version "K40"
Type KSDEU8PB/HN9V
KSDE RE 18136-12/10.11
4/10 Bosch Rexroth AG Hydraulics
Technical data (For applications outside these parameters, please consult us!)
hydraulic
Maximum operating pressure – Version "U" bar 500 (at all ports if P ≥ A; for design reasons)
– Version "R" bar 350 (at all ports)
Maximum flow – Version "U" l/min 3 (see limits of performance page 6)
– Version "R" l/min 5 (see limits of performance page 6)
Hydraulic fluid See table below
Hydraulic fluid temperature range °C –40 to +80
Viscosity range mm
2
/s 4 to 500
Maximum permitted degree of contamination of the hydraulic
fluid - cleanliness class according to ISO 4406 (c)
Class 20/18/15
1)
Load cycles – Version "R" (350 bar) 10 million
– Version "U" (500 bar) 5 million
general
Weight – Valve kg 0.30
– Coil kg 0.25
Installation position Any
Ambient temperature range °C –40 to +110
1)
The cleanliness classes specified for the components must
be adhered to in hydraulic systems. Effective filtration pre-
vents faults and at the same time increases the service life
of the components.
For the selection of the filters see www.boschrexroth.com/filter.
Hydraulic fluid Classification
Suitable sealing materials
Standards
Mineral oils and related hydrocarbons HL, HLP, HLPD, HVLP, HVLPD FKM DIN 51524
Environmentally compatible
– Insoluble in water
HETG FKM
ISO 15380
HEES FKM
– Soluble in water HEPG FKM ISO 15380
Flame-resistant
– Water-free HFDU, HFDR FKM ISO 12922
– Water-containing HFAS FKM ISO 12922
Important information on hydraulic fluids!
– For more information and data on the use of other hydrau-
lic fluids refer to data sheet 90220 or contact us!
– There may be limitations regarding the technical valve
data (temperature, pressure range, service life, mainte-
nance intervals, etc.)!
– The flash point of the process and operating medium used
must be 40 K higher than the maximum solenoid sur-
face temperature.
– Flame-resistant – water-containing: Maximum pressure
differential per control edge 175 bar, otherwise, increased
cavitation erosion!
Tank pre-loading < 1 bar or > 20 % of the pressure
differential. The pressure peaks should not exceed the
maximum operating pressures!
– Environmentally compatible: When using environmen-
tally compatible hydraulic fluids that are simultaneously
zinc-solving, zinc may accumulate in the medium (700 mg
zinc per pole tube).
RE 18136-12/10.11 KSDE
5/10Hydraulics Bosch Rexroth AG
electric
Voltage type Direct voltage
Supply voltage
2)
V 12 DC; 24 DC
Voltage tolerance against ambient temperature See characteristic curves page 6
Power consumption W 22
Duty cycle % See characteristic curves page 6
Maximum coil temperature
3)
°C 150
Switching time according to ISO 6403
(solenoid horizontal)
– ON (1 → 2) ms ≤ 80
– OFF (2 → 1) ms ≤ 80
Maximum switching frequency – Version "R" 1/h 9000
– Version "U" 1/h 3600
Type of protection
according to VDE 0470-1
(DIN EN 60529)
DIN 40050-9
– Version "K4" IP 65 with mating connector mounted and locked
– Version "C4" IP 66 with mating connector mounted and locked
IP 69K with Rexroth mating connector
(Material no. R901022127)
– Version "K40" IP 69K with mating connector mounted and locked
2)
Other voltages upon request
3)
Due to the temperatures occurring at the surfaces of the
solenoid coils, the standards ISO 13732-1 and EN 982
need to be adhered to!
With the electrical connection "K4", the protective earth-
ing conductor (PE
) must be connected correctly.
Technical data (For applications outside these parameters, please consult us!)
120
110
100
90
80
70
60
50
-30 -10 01030507090 110
1
2
3
-20 20 40 60 80 100
120
110
100
90
80
70
60
50
0
0
10
20
30
40
12
50
35
60
4
1
0
100
200
300
400
01 23
45
500
1
2
KSDE RE 18136-12/10.11
6/10 Bosch Rexroth AG Hydraulics
Attention!
The limits of performance were
determined when the solenoids
were at operating temperature
and at 10 % undervoltage.
1 Version "R" and "U" 1 → 2
2 → 1
1 Version "U" 1 → 2
2 Version "R" 1 → 2
2 → 1
Voltage tolerance against ambient temperature; duty cycle
Ambient temperature in °C →
Duty cycle in % →
Admissible supply voltage in %
of the nominal voltage
→
1 Maximum voltage
2 Duty cycle
3
Minimum response
voltage
Admissible supply
voltage range
Characteristic curves (measured with HLP46, ϑ
oil
= 40 °C ± 5 °C and 24 V coil)
Flow in l/min →
Pressure differential in bar →
∆p-q
V
-Characteristic curves
Limits of performance (measured with HLP46, ϑ
oil
= 40 °C ± 5 °C and 24 V coil)
Flow in l/min →
Operating pressure in bar →
Ø37
84 (90)
15
9218,6
68
0
LS
1
2
4
5
8
9
3
55
1; 6
2
1
(P)
(A)
113
1)
12
128
99
2)
11
64,4
1; 7
RE 18136-12/10.11 KSDE
7/10Hydraulics Bosch Rexroth AG
Unit dimensions (dimensions in mm)
1 Mating connector (separate order,
see data sheet 08006)
2 Space required to remove the
mating connector
3 SW24, tightening torque
M
A
= 45
+5
Nm
4 Dimension for "K4" mating con-
nector, without circuitry
5 Dimension () for "K4" mating con-
nector, with circuitry
6 Version "K40"
7 Version "C4"
8 Nut, tightening torque
M
A
= 5
+1
Nm
9
Coil (separate order, see
page 2)
10 Concealed manual override "N9",
optional
11 Screwable manual override "N11",
optional
12 Screwable manual override "N10"
(separate order, see page 2)
① = main port 1, pump P
3)
② = main port 2, actuator A
3)
LS = location shoulder
1)
Operated
2)
Screwed in
3)
Attention!
Unambiguous pinout. P and A must
not be exchanged or closed!
Ø9,5±0,1
Ø11,1
+0,05
A-B
Ø0,2
A-B
Ø0,05
B
Rmax 8
Ø14,48
+0,1
A-B
Ø0,05
min 10
13,5±0,1
19,05
+0,1
0
LS
Rmax 8
M16 x 1,5–6H
Ø16,65
+0,05
A
Rz 16
Ø17,86
+0,05
A-B
Ø0,05
min Ø32
1; 3)
0,8
+0,8
3,6±0,1
11,1
±0,1
max Ø4,8
2
1
45°
+0,25
“Y”
“X”
“X”
Rz 16
Rz 16
A-B
0,05
30º
2)
A-B
Ø0,05
Ø17,15
+0,05
“Y”
Ø11,9
+0,1
R0,8
2)
Rz 16
25º
2)
75º
A-B
Ø0,05
-0,2 +0,2
Rz 32
3)
A-B
Ø0,05
KSDE RE 18136-12/10.11
8/10 Bosch Rexroth AG Hydraulics
Mounting cavity R/T-8A; 2 main ports; thread M16 x 1.5 (dimensions in mm)
1)
Deviating from T-8A
2)
All seal ring insertion faces are rounded and free of burrs
3)
With counterbore
Tolerance for all angles ±0.5°
① = main port 1
② = main port 2
LS = location shoulder
RE 18136-12/10.11 KSDE
9/10Hydraulics Bosch Rexroth AG
Available individual components
Item Denomination Material no.
910 Nut R900991453
920 O-ring for pole tube R900004280
999 Seal kit of the valve R961003237
A Manual override "N10"
1)
R901051231
A
Coils, separate order, see page 2
1)
Only with ordering code "N9", see page 2
920 910
999
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
© This document, as well as the data, specifications and other informa-
tion 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 applica-
tion 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.
KSDE RE 18136-12/10.11
10/10 Bosch Rexroth AG Hydraulics
Notes
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
© This document, as well as the data, specifications and other informa-
tion 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 applica-
tion 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.
RE 18136-12/10.11 KSDE
11/10Hydraulics Bosch Rexroth AG
Notes
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
© This document, as well as the data, specifications and other informa-
tion 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 applica-
tion 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.
KSDE RE 18136-12/10.11
12/10 Bosch Rexroth AG Hydraulics
Notes
