BOSCH REXROTH
R901069975

$130.29 USD

BOSCH REXROTH
Material:R901069975
Model:KKDER8NA/HN9V

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.

***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 KKDER8NA/HN9V (R901069975) is a high-performance screw-in cartridge valve designed for hydraulic applications requiring precise control of the start, stop, and direction of flow. This directional spool valve is direct-operated with solenoid actuation and features a pressure-compensated design. It consists of a robust housing, a control spool, and a return spring. With a maximum operating pressure of 350 bar (5076 psi) and a nominal flow rate capacity, this valve ensures reliable performance under demanding conditions. The KKDER8NA/HN9V valve is equipped with wet-pin DC solenoids that provide smooth and efficient actuation. The control spool can be shifted by electrical signals to facilitate the flow in either direction, making it versatile for various hydraulic circuits. Additionally, the positive overlap design minimizes switching shocks during operation. A key feature of this model is its concealed manual override capability, which allows for manual operation in the absence of electrical power or during maintenance procedures. This ensures that operators have control over the hydraulic system at all times. The valve's FKM sealing material offers excellent resistance to high temperatures and chemical exposure, ensuring durability and longevity in harsh environments. It is compatible with various hydraulic fluids such as HL, HLP, HEES, and HEPG. Designed as part of the product family classification for directional spool valves and direct-acting positions, this model comes without an integrated coil which must be ordered separately. The KKDER8NA/HN9V fits into Sun TA cavities and has been engineered to meet stringent industry standards for performance and reliability in hydraulic systems.

Unpacked Weight: 0.2503 kg

General information

The 2/2 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 housing (1), control spool (4) and a return spring (2).

Function

In the de-energized condition, the control spool (4) is held in the initial position by the return spring (2). The control spool (4) is actuated by wet-pin DC solenoids (3). The symbols are realized by different spools (N and P). The main ports ➀ and ➁ can be loaded continuously with an operating pressure of 350 bar and the flow can be directed into both directions (see Symbols).

The manual override (5) allows for the switching of the valve without solenoid energization. It is also available in screwable version"N10" (6) (see Type keys).

Version "K4" (with mating connector)

Type KKDER8NA/HN9V

technical illustration-R901069975-Pilot control valve Mounting cavity R/T-8A Direct-controlled directional slide valve with solenoid actuation Flow possible in both directions Positive overlap prevents switching shocks Wet-pin DC solenoids Solenoid coil can be rotated With concealed manual override

Version "C4"

Screw-in cartridge valve
Maximum operating pressure 350 bar (5000 psi)
Maximum flow 45 l/min (12 gpm)
Cavity SUN T-8A

Max. pressure	350
Coil	GZ37
Product family classification	2/2 directional spool valve, direct operated with solenoid actuation
Productgroup ID	7,21,22,23,24,25
Product family type	KKDE
Ports number	2
Manual override	Concealed manual override
Type of actuation	Solenoid-actuated on/off
Sealing material	FKM
Cavity	Sun T-8A
Product type	KKDE
Max. flow	45
Type of connection	Screw-in cartridge valve
Normal position	Normally closed
Nominal flow	45
Direct - Pilot	Direct acting
Positions	2
Product family	2 ways
Coil integrated	To be ordered separately
Spool Poppet	Spool type
Weight	0.2503
Hydraulic fluid	HL,HLP,HEES,HEPG

(valve without coil)1)

01	02	03	04	05		06	07	08	09
KKDE	R	8		A	/	H		V	*

01	Directional spool valve, direct operated, electrically operated (pilot valve)	KKDE
02	Maximum operating pressure 350 bar	R
03	Component size	8
04	2 main ports
Symbols		N
		P
05	Component series	A
06	High Performance and mounting cavity R/T-8A (see mounting cavity)	H
07	Without manual override	N0
	With concealed manual override 2)	N9
Seal material

08	FKM seals (other seals upon request)	V
	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
09	Further details in the plain text	*

	1) Complete valves with mounted coil on request.

2) Screwable manual override "N10" (actuation by means of internal hexagon with lock nut), can be ordered separately, material no. R901051231; ordering code “N9”!

general

Size			8
Installation position			any
Ambient temperature range		°C	-40 … +110
Weight	Valve	kg	0.3
Weight	Coil	kg	0.25

hydraulic

Size		8
Maximum operating pressure 1)	bar	350
Maximum flow	l/min	45
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!

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

For applications outside these parameters, please consult us!

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 N

Δp-qV characteristic curves – Symbol P

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

Symbol N

Symbol P

Attention!

The performance limit has been determined with the solenoids at operating temperature and with 10 % undervoltage.

Symbol “N”

Symbol “P”

Dimensions in mm

1	Mating connectors (separate order)
2	Space required to remove the mating connector
3	Wrench size 24, tightening torque MA = 34 to 41 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
LS	Location shoulder