KKDER1EA/HCG12N9K4V

Manufacturer: Bosch Rexroth

Material #: R901002589

Model : KKDER1EA/HCG12N9K4V

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth KKDER1EA/HCG12N9K4V (R901002589) is a high-quality directional spool valve designed for precise control over the start, stop, and direction of fluid flow in hydraulic systems. This direct operated, pressure-compensated screw-in cartridge valve is equipped with wet-pin DC solenoids that actuate the control spool, which is held in its initial position by a return spring when deenergized. The valve can handle continuous operating pressures up to a specified bar and allows for flow in both directions as indicated by its symbols D, E, and F. One of the key features of this model is its manual override function that enables users to switch the valve without solenoid energization. This feature comes with an optional screwable version for added convenience. The KKDER1EA/HCG12N9K4V's solenoid coil can be rotated for ease of installation and maintenance, while the concealed manual override ensures uninterrupted operation even in the event of power failure. Designed with robustness in mind, this valve fits into an RTA mounting cavity and boasts a size component series A. It supports a maximum flow rate measured in liters per minute (l/min), ensuring efficient performance across various applications. The Version C indicates a standard configuration, while Version K includes a mating connector for streamlined electrical integration. Overall, the Bosch Rexroth KKDER1EA/HCG12N9K4V offers reliable performance and flexibility for hydraulic system operators seeking a durable and user-friendly directional control solution.

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Mounting cavity R/T-31A Direct-controlled directional slide valve with solenoid actuation Flow possible in both directions Wet-pin DC solenoids Solenoid coil can be rotated With concealed manual override

Function

In the de-energized condition, the control spool (5) is held in the initial position by the return spring (4). The control spool (5) is actuated by wet-pin DC solenoids (3). The symbols are realized by different spools (D; E and F). The main ports ➀, ➁, ➂ and➃can be loaded continuously with an operating pressure of 350 bar and the flow can be directed into both directions (see Symbols).

The manual override (6) allows for the switching of the valve without solenoid energization. It is also available in screwable version"N10" (7) (see Type keys).

General information

The 4/2 directional spool valves are direct operated, pressure-compensated screw-in cartridge valves. They control the start, stop and direction of flow and basically consist of a housing (1) with moveable socket (2), a control spool (5) and a return spring (4).

Version "C4"

Version "K4" (with mating connector)

Type KKDER1EA/HN9V

(valve without coil)1)

01	02	03	04	05		06	07	08	09
KKDE	R	1		A	/	H		V	*

01	Directional spool valve, direct operated, electrically operated	KKDE
02	Maximum operating pressure 350 bar	R
03	Component size	1
04	4 main ports
Symbols		D
		E
		F
05	Component series	A
06	High Performance and mounting cavity R/T-31A (see Mounting cavity)	H
07	Without manual override	N0
	With concealed manual override 2)	N9
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 on request.

	2) Screwable manual override “N10” possible (material no. R901051231, separate order)

general

Size			1
Installation position			any
Ambient temperature range		°C	-40 … +110
Weight	Valve	kg	0.35
Weight	Coil	kg	0.25

hydraulic

Size		1
Maximum operating pressure 1)	bar	350
Maximum flow	l/min	40
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 2)		Class 20/18/15 according to ISO 4406 (c)
Fatigue strength according to ISO 10771		10 million (at 350 bar)

1)	At all ports
2)	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	Standards
Mineral oil		HL, HLP	DIN 51524
Bio-degradable	Insoluble in water	HEES (synthetic esters)	VDMA 24568
		HETG (rape seed oil)
	Soluble in water	HEPG (polyglycols)	VDMA 24568
Other hydraulic fluids on request

electrical

Voltage type			Direct voltage
Power supply 1)		V	12 24
Voltage tolerance against ambient temperature			see voltage tolerance characteristic curve
Power consumption		W	22
Duty cycle		%	100
Maximum coil temperature 2)		°C	150
Switching time according to ISO 6403	ON	ms	≤ 80
Switching time according to ISO 6403	OFF	ms	≤ 50
Maximum switching frequency		1/h	15000
Protection class according to DIN EN 60529 (VDE 0470-1), DIN 40050-9	Version "K4"		IP65 (with mating connector mounted and locked)
	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 parameters, please consult us!

With the electrical connection "K4", the protective earthing conductor (PE, grounded) is to be connected in accordance with the stipulations.

Voltage tolerance against ambient temperature; duty cycle

Voltage range and duty cycle dependent on the ambient temperature

(measured with HLP46, ϑoil = 40 ±5 °C) and 24 V coil

Δp-qV characteristic curves – Symbol D

Δp-qV characteristic curves – Symbol E

Δp-qV characteristic curves – Symbol F

Attention!

The specified performance limits are valid for use with two directions of flow (e. g. symbol D: ➀ to ➁ and simultaneous return flow from ➃ to ➂). Due to the flow forces acting within the valves, the admissible performance limit may be considerably lower with only one direction of flow (e. g. from ➀ to ➁ while port B is blocked)! In such cases, please consult us!

The performance limit was determined when the solenoids were at operating temperature, at 10 % undervoltage and without tank preloading.

Performance limits (measured with HLP46, ϑOil = 40 ±5 °C and 24 V coil)

Symbol D

Symbol E

Symbol F

Symbol “D”

Symbol “E”

Symbol “F”

Dimensions in mm

1	Mating connectors (separate order)
2	Space required to remove the mating connector
3	Wrench size 24, tightening torque MA = 45 to 50 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, see type key)
10	Concealed manual override "N9", optional
11	Screwable manual override "N10" (separate order, see Type keys)
➀	Main port 1
➁	Main port 2
➂	Main port 3
➃	Main port 4
LS	Location shoulder