Артикул: RX7344
2/2 directional seat valve, direct operated with solenoid actuation KSDE.8 N/P (High Performance)
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Description
- Size 8
- Component series B
- Maximum operating pressure 500 bar
- Maximum flow 5 l/min
Features
- Direct operated directional seat valve with solenoid actuation, tight on both sides
- Mounting cavity R/T-8A
- Blocked port tight in a leak-free form
- Reliable switching even after longer periods of standstill
- Wet-pin DC solenoids
- Solenoid coil can be rotated
Product description
General
The 2/2 directional seat valves are direct operated, pressure-compensated screw-in cartridge valves. They basically comprises of screw-in section (1), solenoid (4) as well as closing element (3) and compression spring (2).
Function
The initial position of the valve (normally open "P" or normally 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 ➀ and ➁ can be loaded with an operating pressure of 350 bar / 500 bar (see Technical data).
Attention!
The flow is only admissible in the direction of arrow (see symbols)! With version “U” (operating pressure 500 bar), the main port ➀ must be connected to the 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 manner.
The manual override allows the switching of the valve without solenoid energization. It is available in concealed version "N9" (5) or in screwable version "N11" (6) (see ordering codes).
Version "K4" (with mating connector)
Type KSDEU8PB/HN9V
Version "C4"
Version "K40"
Type code
(valve without coil) 1)
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | |
| KSDE | 8 | B | / | H | V | * |
| 01 | Directional seat valve, direct operated, electrically operated | KSDE | ||||
| 02 | Maximum operating pressure 500 bar | U | ||||
| Maximum operating pressure 350 bar | R | |||||
| 03 | Component size | 8 | ||||
| 04 | 2 main ports | |||||
| „R“ (350 bar) | „U“ (500 bar) | |||||
| Symbols |  |  | N | |||
 |  | P | ||||
| 05 | Component series | B | ||||
| 06 | High Performance and mounting cavity R/T-8A (see mounting cavity) | H | ||||
| 07 | Without manual override | N0 | ||||
| With concealed manual override | N9 | |||||
| With screwable manual override (actuation by means of knurled screw) | N11 | |||||
| Version | Symbol N | Symbol P | ||||
| N0 | N9 | N11 | N0 | N9 | ||
| „R“ (350 bar) | X | – | X | X | X 2) | |
| „U“ (500 bar) | X | – | – | X | – | |
| Seal material | ||||||
| 08 | FKM seals (other seals upon request) Observe compatibility of seals with hydraulic fluid used. | V | ||||
| 09 | Further details in the plain text | * | ||||
1) Complete valves with mounted coil available 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” !
Technical data
general
| Size | 8 | ||
| Weight | Valve | kg | 0.3 |
| Coil | kg | 0.25 | |
| Installation position | any | ||
| Ambient temperature range | °C | -40 … +110 | |
hydraulic
| Size | 8 | |||
| Maximum operating pressure | Version | „U“ | „R“ | |
| bar | 500 1) | 350 2) | ||
| Maximum flow | Version | „U“ | „R“ | |
| l/min 3) | 3 | 5 | ||
| Hydraulic fluid | see table | |||
| Hydraulic fluid temperature range | °C | -40 … +80 | ||
| Viscosity range | mm²/s | 4 … 500 | ||
| Maximum admissible degree of contamination of the hydraulic fluid 4) | Class 20/18/15 according to ISO 4406 (c) | |||
| Load cycles | Version (R: 350 bar [5100 psi]; U: 500 bar [5100 psi]) | „U“ | „R“ | |
| million | 5 | 10 | ||
| 1) | On all ports if P ≥ A; for design reasons |
| 2) | At all ports |
| 3) | See performance limits |
| 4) | The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle 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 | |
| Containing water | Water-free | HFDU, HFDR | FKM |
ISO 12922
|
| Containing water | HFAS | FKM |
ISO 12922
| |
| Important information on hydraulic fluids!
Tank preloading 20% of the pressure differential. The pressure peaks should not exceed the maximum operating pressures!
| ||||
With the electrical connection "K4", the protective earthing conductor (PE, grounded) is to be connected in accordance with the stipulations.
electrical
| Voltage type | Direct voltage | |||
| Power supply 1) | V | 12 24 | ||
| Voltage tolerance against ambient temperature | See characteristic curves | |||
| Power consumption | W | 22 | ||
| Duty cycle | % | 100 | ||
| Maximum coil temperature 2) | °C | 150 | ||
| Switching time according to ISO 6403 (solenoid horizontal) | ON (➀ → ➁) | ms | ≤ 80 | |
| OFF (➁ → ➀) | ms | ≤ 80 | ||
| Maximum switching frequency | Version | „U“ | „R“ | |
| Hz | 3600 | 9000 | ||
| Protection class according to EN 60529 | Version "K4" | IP65 (If a suitable and a correctly mounted mating connector are used.) | ||
| Version "C4" | IP66 with mating connector mounted and locked IP69K with Rexroth mating connector (material no. R901022127) | |||
| Version "K40" | IP69K with mating connector mounted and locked | |||
| 1) | Other voltages upon request |
| 2) | Due to the surface temperatures of the solenoid coils, the standards ISO 13732-1 and EN 982 need to be adhered to! |
(For applications outside these values, please consult us!)
Diagrams/characteristic curves
Voltage tolerance against ambient temperature; duty cycle
Voltage range and duty cycle dependent on the ambient temperature
(measured with HLP46, ϑoil = 40 °C ± 5 °C and 24 V coil)
(measured with HLP46, ϑOil = 40 °C ± 5 °C) and 24 V coil
Δp-qV characteristic curves
Performance limits(measured with HLP46, ϑOil = 40 ±5 °C and 24 V DC voltage)
Attention!
The performance limit has been determined with the solenoids at operating temperature and with 10 % undervoltage.
Symbols/Circuit diagrams
Version “R” (350 bar)
Symbol “N” normally closed
Version “R” (350 bar)
Symbol “P” normally open
Version “U” (500 bar)
Symbol “N” normally closed
Version “U” (500 bar)
Symbol “P” normally open
Dimensions
Dimensions in mm
| 1 | Mating connector (separate order, see data sheet 08006) |
| 2 | Space required to remove the mating connector |
| 3 | SW24, tightening torqueMA = 45+5 Nm |
| 4 | Dimension for mating connector “K4”, without circuitry |
| 5 | Dimension () for mating connector “K4”, with circuitry |
| 6 | Version "K40" |
| 7 | Version "C4" |
| 8 | Nut, tightening torque MA = 5+1 Nm |
| 9 | Coil (separate order) |
| 10 | Concealed manual override "N9", optional |
| 11 | Screwable manual override "N11", optional |
| 12 | Screwable manual override “N10” (separate order) |
| ➀ | Main port 1, pump P3) |
| ➁ | Main port 2, actuator A3) |
| LS | Location shoulder |
| 1) Actuated | |
| 2) Screwed in | |
| 3)Attention! | |
| Unambiguous pin assignment. P and A must not be exchanged or closed! |
Mounting cavity R/T-8A; 2 main ports; thread M16 x 1.5 mm
Dimensions in mm
| 1) Deviating from T-8A | |
| 2) All seal ring in sertion faces are rounded and free of burrs | |
| 3) With countersink |
| ➀ | Main port 1 |
| ➁ | Main port 2 |
| LS | Location shoulder |
Tolerance for all angles ± 0.5 °
Accessories
Mating connectors for directional valves with connector "C4" and "C4Z" (AMP Junior-Timer), litz wire outer diameter 2.2 mm to 3.0 mm
2P JUNIOR D2 2
Mating connectors for directional valves with connector "C4" and "C4Z" (AMP Junior-Timer), litz wire outer diameter 2.2 mm to 3.0 mm
2P JUNIOR D2 2
- For directional valves with connector "C4" and "C4Z" (AMP Junior-Timer)
Mating connectors for directional valves with connector "K40" (Deutsch plug)
2P DT06 K40
Mating connectors for directional valves with connector "K40" (Deutsch plug)
2P DT06 K40
- For directional valves with "K40" connector (Deutsch plug)
Downloads
 | Hydraulic valves and hydroelectric pressure switches for industrial applications Manual | RE07600-B | 2021-06-21 | English | PDF | 306k Product Groups: Industrial Hydraulics On/off, proportional, high-response and servo valves, pressure switches |
| 2/2 directional seat valve, direct-operated, with solenoid actuation KSDE.8 Data Sheet | RE18136-12 | 2021-08-05 | English | PDF | 812k Product Groups: KSDE.8 N/P (High Performance), 2/2 directional poppet valves, direct operated with solenoid actuation Size 8, Series B |
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