4WREEM10W75-2X/G24K34/B6V

Manufacturer: Bosch Rexroth

Material #: R901008707

Model : 4WREEM10W75-2X/G24K34/B6V

***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 4WREEM10W75-2X/G24K34/B6V (R901008707) is a high-precision proportional directional valve, expertly crafted to regulate flow direction and magnitude in hydraulic systems. Its design incorporates direct operation through the use of proportional solenoids that feature a central thread and are equipped with detachable coils, ensuring flexibility and ease of maintenance. The integrated electronics facilitate precise control of the solenoids, which is essential for applications requiring exacting performance. This model showcases a symmetric spool overlap that is characteristic of the WREEM series, along with a monitoring function for both spool position and operating direction. Additionally, it includes an innovative step function in its design to swiftly bypass the spool overlap, enhancing the responsiveness of the valve. This functionality is particularly beneficial for machines with stringent safety demands, such as hydraulic press controls. The construction of the valve includes a robust housing with a control spool balanced by compression springs, alongside position transducer technology that contributes to reliable operation. When deenergized, the solenoids maintain the control spool in a central position due to these springs. Upon energization of a solenoid, direct actuation moves the control spool proportionally to the electrical input signal. For safety-critical operations, this valve's readiness can be verified through an output stage query via pin. It also ensures that in cases of power failure or absence of command signals, it defaults to a safe central position where ports are appropriately blocked or connected. The 4WREEM10W75-2X/G24K34/B6V valve is intended for subplate mounting and adheres to ISO porting patterns. It boasts an impressive maximum operating pressure and flow rate capacity. It's important to note that users must adhere to specific conditions regarding tank line management and installation orientation to prevent damage and ensure optimal performance over its lifecycle.

$4,277.00 USD

More are expected on April 9, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as April 9, 2025 when ordered in

This product is eligible for factory repair.

Repairs from $916.00

Direct operated proportional directional valve for controlling flow direction and flow size Operation by means of proportional solenoids with central thread and detachable coil Electrical position feedback Integrated electronics (OBE) with B6 interface Monitoring of control spool position With or without step function Spring-centered control spool For subplate mounting: Porting pattern according to ISO 4401

The 4/3 proportional directional valves are designed as direct operated devices in plate design. Operation by means of proportional solenoids with central thread and detachable coil. The solenoids are controlled via integrated electronics.

In version 4WREEM..., the valve is equipped with a symmetric spool overlap and features an operating direction and spool central position monitoring function.

In addition, version 4WREEM...J... has a step function to compensate for this overlap. This means that the spool overlap is passed quickly.

The valve is mainly used in machines with high safety requirements, e. g. in hydraulic press controls.

Set-up:

The valve basically consists of:

Housing (1) with connection surface Control spool (2) with compression springs (3 and 4) Solenoids (5 and 6) with central thread Position transducer (7) Integrated electronics (8)

Function:

With de-energized solenoids (5 and 6), central position of the control spool (2) due to compression springs (3 and 4) Direct actuation of the control spool (2) by energization of one proportional solenoid, e. g. solenoid "b" (6) Control spool (2) is moved to the left in proportion to the electrical input signal Connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics Switching off of solenoid “b” (6) Control spool (2) is returned to the central position by the compression spring (3)

If no enable signal is available, the output stage is locked and the valve is not functional. The readiness for operation of the output stages can be queried via pin 8. If the supply voltage fails or if no command value is available, the valve control spool is maintained in the central position by centering springs. In this spool position, A, B, P are blocked with spool E and A and B are connected to T with spool W.

Monitoring function:

Monitoring of the control spool position via an inductive position transducer Output signals of the integrated electronics can be evaluated by an external safety control in order to detect any malfunction of the valve The power output stages are blocked by switching off the voltage for enable (pin 3). Notice: Not released for switching off according to EN13849! The output stages are enabled via the enable input (pin 3). The status message is sent via pin 8 The signals to the signal outputs pin 9, pin 10 and pin 11 of the connector are led out. The signals are enabled by the logic switching statuses if the threshold values (+ Xw and – Xw) are exceeded The switching signals are used in a superior control system for monitoring functions

Precondition for the use as a safety-relevant component in hydraulic circuits:

The entire control must meet the requirements of the standards that are relevant for the application, such as e. g. EN693, EN12622 or EN13849 If safety requires or if the control system detects an error, switching off the supply voltage (pin 1 and pin 2) and enable (pin 3) must cause the valve to be switched off The valve must not be operated vertically with the spool position sensor hanging upside down

Important notice:

The PG fitting (9) must not be opened. Mechanical adjustment of the adjustment nut located below is prohibited and damages the valve!

Notice:

Due to the design principle, internal leakage which may increase over the life cycle is inherent to the valves.

Notice:

The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve (preload pressure approx. 2 bar) must be installed.

01	02	03	04	05	06	07	08		09		10	11		12	13	14
4	WRE	E	M					‒	2X	/	G24	K34	/	B6	V	*

01	4 main ports	4
02	Proportional directional valve with electrical position feedback	WRE
03	With integrated electronics (OBE)	E
04	Monitoring of control spool position	M
05	Size 6	6
05	Size 10	10
06	Symbols; for the possible version, see "Symbols/Circuit diagrams"	E; E1-; W; W1-
Rated flow NG6
07	4 l/min	4
	8 l/min	8
	16 l/min	16
	32 l/min	32
Rated flow NG10
07	25 l/min	25
	50 l/min	50
	75 l/min	75
Option
08	Without step function	no code
08	Electrical compensation of the control spool overlap	J
09	Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions)	2X
10	Supply voltage 24 V	G24
Electrical connection
11	Connector DIN 43651	K34
Electrical interface
12	Command value ±10 V	B6
Seal material
13	NBR seals	V
14	Further details in the plain text	*

For applications outside these parameters, please consult us!

general

Type		4WREEM
Size		6	10
Installation position		horizontal, must not be installed vertically
Ambient temperature range	°C	-20 … +50
Storage temperature range	°C	-20 … +80
Weight	kg	2.4	6.5
MTTFD values according to EN ISO 13849	y	150

hydraulic

Size			6	10
Maximum operating pressure		bar	315
Maximum operating pressure	Port P	bar	315
	Port T	bar	210
	Port A	bar	315
	Port B	bar	315
Maximum flow		l/min	90	180
Nominal flow		l/min	4 8 16 32	25 50 75
Maximum admissible zero flow		l/min	≤ 0.3	≤ 0.6
Hydraulic fluid			see table below
Hydraulic fluid temperature range		°C	-20 … +80
Hydraulic fluid temperature range	preferably	°C	+40 … +50
Viscosity range		mm²/s	20 … 380
Viscosity range	preferably	mm²/s	30 … 46
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)			Class 20/18/15 according to ISO 4406 (c)
Hysteresis		%	≤ 0.1
Range of inversion		%	≤ 0.05
Response sensitivity		%	≤ 0.05
Zero shift upon change of	Hydraulic fluid temperature	%/10 K	< 0.15
Zero shift upon change of	Operating pressure	%/100 bar	< 0.1

1)	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	NBR / FKM	DIN 51524
Flame-resistant - containing water	HFC (Fuchs HYDROTHERM 46M, Petrofer Ultra Safe 620)	NBR	ISO 12922
Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. Flame-resistant - containing water: Maximum pressure differential per control edge 175 bar Pressure pre-loading at the tank port > 20 % of the pressure differential, otherwise increased cavitation Life cycle as compared to operation with mineral oil HL, HLP 50 % to 100 %

electrical

Size			6	10
Voltage type			Direct voltage
Maximum current consumption	of the amplifier 1)	A	2
	of the amplifier (impulse current)	A	3
Actuated time		%	100
Maximum coil temperature 2)		°C	150
Protection class according to DIN EN 60529			IP65 (with mating connector mounted and locked)
Command value output		V	± 10
Power supply		V	24
Supply voltage range		V	19 … 35
Earthing (GND)		V	0
Enable input range	"B6"	V	8.5 … 35
Command value input	"B6"	mA	± 10
Actual value output	"B6"	V	± 10
Power output stages of signal output			0 V or UB
Control spool position P → A		V	24
Control spool position P → B		V	24
Control spool position zero position		V	24

1)	plus load of switching outputs
2)	Due to the surface temperatures occurring at solenoid coils, the European standards ISO 13732-1 and ISO 4413 need to be adhered to.

Symbols

With control spool symbol E1- and W1-, the following applies:
P → A: qvmax	B → T: qv/2
P → B: qv/2	A → T: qvmax
Notice: In the zero position, control spool symbol W has a connection from A → T and from B → T with approx. 3% of the relevant nominal cross-section.

Type 4WREEM...E...

Type 4WREEM...W...

Pin assignment	Contact	Signal with interface B6
Power supply	1	24 VDC (u(t) = 19,0 ... 35 V); Imax = 2 A
Power supply	2	0 V
Enable input	3	8,5 VDC ... 35 VDC
Differential amplifier input (command value)	4, 5	± 10 V command value
Differential amplifier input (command value)	6, 7	± 10 V actual value
Power output stages of signal output	8	0 V or UB
Control spool position P → B	9	24 VDC
Control spool position P → A	10	24 VDC
Control spool position zero position	11	24 VDC
	PE	connected to cooling element and valve housing

Command value:
Positive command value 0 ... +10 V at pin 4 and reference potential at pin 5 result in flow from P → A and B → T
Negative command value 0 ... –10 V at pin 4 and reference potential at pin 5 result in flow from P → B and A → T
Actual value:
Positive actual value 0 ... +10 V at pin 6 and reference potential at pin 7 result in flow from P → A and B
T
Negative actual value 0 ... -10 V at pin 6 and reference potential at pin 7 result in a flow from P → B and A
T
Connection cable:
Recommendation:
up to 25 m cable length type LiYCY 7 x 0.75 mm²
up to 50 m cable length type LiYCY 7 x 1.0 mm²

Block diagram / pin assignment

Logic switching statuses for control spool position monitoring

Control spool position	Direction of flow	logic switching statuses
Control spool position	Direction of flow	Pin 9	Pin 10	Pin 11
X < - Xw	B ← P	1	0	0
- Xw ≤ X ≤ Xw	-	1	1	1
X > Xw	P → A	0	1	0

Marking and adjustment elements

1	Material number
2	Production order number
3	Date of production
4	Serial number
5	Type designation
6	Setting the ramp time

4WREEM 6

Dimensions in mm

1	Valve housing
2	Proportional solenoid "a" with inductive position transducer
3	Proportional solenoid "b"
4	R-ring 9.81 x 1.5 x 1.78 (ports P, A, B, T)
5	Space required to remove the mating connector
6	Integrated electronics (OBE)
7	Mating connector according to DIN EN 175201-804, separate order
8	Name plate
9	Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) Deviating from the standard: - without locating hole "G" - ports P, A, B and T with Ø8 mm

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9

tightening torque MA = 8.9 Nm ± 10 %

4WREEM 10

Dimensions in mm

1	Valve housing
2	Proportional solenoid "a" with inductive position transducer
3	Proportional solenoid "b"
4	R-ring 13.0 x 1.6 x 2.0 (ports P, A, B, T, T1)
5	Space required to remove the mating connector
6	Integrated electronics (OBE)
7	Mating connector according to DIN EN 175201-804, separate order
8	Name plate
9	Machined valve contact surface; Porting pattern according to ISO 4401-05-04-0-05 Deviating from the standard: Port T1 with Ø11.2 mm

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M6 x 40 - 10.9

tightening torque MA = 15.5 Nm ± 10%

Notice:

The dimensions are nominal dimensions which are subject to tolerances.

Spare parts & repair

4WREEM10W75-2X/G24K34/B6V

Manufacturer: Bosch Rexroth

Material #: R901008707

Model : 4WREEM10W75-2X/G24K34/B6V

More are expected on April 9, 2025

This product is eligible for factory repair.

Set-up:

Function:

Monitoring function:

Precondition for the use as a safety-relevant component in hydraulic circuits:

Important notice:

Notice:

Notice:

general

hydraulic

electrical

(measured with HLP46, ϑÖl = 40 ±5 °C)

Rated flow 4 l/min at a valve pressure differential of 10 bar

Rated flow 8 l/min at a valve pressure differential of 10 bar

Rated flow 16 l/min at a valve pressure differential of 10 bar

Rated flow 32 l/min at a valve pressure differential of 10 bar

Performance limit rated flow 4 l/min

Performance limit rated flow 8 l/min

Performance limit rated flow 16 l/min

Performance limit rated flow 32 l/min

Transition function with stepped electric input signals

Frequency response

Rated flow 25 l/min at a valve pressure differential of 10 bar

Rated flow 50 l/min at a valve pressure differential of 10 bar

Rated flow 75 l/min at a valve pressure differential of 10 bar

Performance limit rated flow 25 l/min

Performance limit rated flow 50 l/min

Performance limit rated flow 75 l/min

Transition function with stepped electric input signals

Frequency response

Symbols

Type 4WREEM...E...

Type 4WREEM...W...

Block diagram / pin assignment

Logic switching statuses for control spool position monitoring

Marking and adjustment elements

4WREEM 6

Recommended valve mounting screws (separate order):

4WREEM 10

Recommended valve mounting screws (separate order):

Notice:

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