BOSCH REXROTH
R900954094

$2,369.81 USD

BOSCH REXROTH
Material:R900954094
Model:4WRE6E1-32-2X/G24K4/V

Quantity in stock: 0

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***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 4WRE6E1-32-2X/G24K4/V (R900954094) is a high-performance, direct operated proportional directional valve with electrical position feedback and external control electronics. This advanced hydraulic component is designed for precise control of flow direction and magnitude in hydraulic systems. It features proportional solenoids with a central thread and detachable coil, which are responsible for the actuation of the control spool. The valve's setup includes a robust housing that provides a connection surface, along with a control spool that is supported by compression springs and spring plates. The solenoids are instrumental in moving the control spool in response to electrical input signals, offering proportional actuation for precise fluid management. When deenergized, the solenoids allow the control spool to return to its central position due to the action of the compression springs. This valve is particularly suitable for subplate mounting and adheres to ISO porting patterns. Its spring-centered control spool ensures reliable operation when switching between states. The component is designed to withstand maximum operating pressures up to bar and can handle maximum flow rates of l/min. It's important to note that this valve should not be mechanically adjusted after installation as it may lead to damage, and it inherently possesses internal leakage which may increase over time due to its design principle. Additionally, precautions must be taken to ensure that the tank line does not run empty; if necessary, a preload valve with an approximate preload pressure of bar should be installed under certain conditions. In summary, the Bosch Rexroth 4WRE6E1-32-2X/G24K4/V (R900954094) offers robust performance for demanding hydraulic applications where precision flow direction and magnitude control are essential. Its design ensures reliability and consistent performance in various industrial applications.

Type 4WRE...-2X/...

The 4/2 and 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 by external electronics.

Set-up:

The valve basically consists of:

Housing (1) with connection surface Control spool (2) with compression springs (3 and 4) and spring plates (5 and 6) Solenoids (7 and 8) with central thread Position transducer (9)

Function:

With de-energized solenoids (7 and 8), central position of the control spool (2) due to compression springs (3 and 4) between the spring plates (5 and 6) Direct actuation of the control spool (2) by the control of one proportional solenoid, e. g. solenoid "b" (8) 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 the solenoid (8) Control spool (2) is returned to the central position by the compression spring (3)

In the de-energized state, the control spool (2) is held in a mechanical central position by the return spring of the solenoids. With control spool symbol "V", this position does not correspond to the hydraulic central position! When the electric valve control loop is closed, the control spool is positioned in the hydraulic central position.

technical illustration-R900954094-Direct operated proportional directional valve with electrical position feedback and external electronics Control of flow direction and size Operation by means of proportional solenoids with central thread and detachable coil For subplate mounting: Porting pattern according to ISO 4401 Spring-centered control spool

Important notice:

The PG fitting (11) must not be opened. Mechanical adjustment of the adjustment nut located below is prohibited and damages the valve!

Valve with two spool positions: (Type 4WRE…A...)

The function of this valve version basically corresponds to the valve with three spool positions. The 2 spool position valve is, however, only equipped with solenoid “a” (7). Instead of the 2nd proportional solenoid, a plug screw (10) is installed.

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
4	WRE				‒	2X	/	G24	K4	/		*

01	4 main ports	4
02	Proportional directional valve with electrical position feedback	WRE
03	Size 6	6
03	Size 10	10
04	Symbols; for the possible version, see "Symbols/Circuit diagrams"	E; E1-; V; V1-; W; W1-; EA; WA
Rated flow NG6
05	4 l/min	4
	8 l/min	8
	16 l/min	16
	32 l/min	32
Rated flow NG10
05	25 l/min	25
	50 l/min	50
	75 l/min	75
06	Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions)	2X
07	Supply voltage 24 V	G24
Electrical connection
08	Connector DIN EN 175301-803	K4
Seal material
09	NBR seals	M
09	FKM seals	V
10	Further details in the plain text	*

For applications outside these parameters, please consult us!

general

Type		4WRE
Size		6
Installation position		any, preferably horizontal
Ambient temperature range	°C	-20 … +70
Storage temperature range	°C	-20 … +80
Weight	kg	2.2
MTTFD values according to EN ISO 13849 1)	y	150

1)	With control spool types E, E1, EA, W, W1, WA; in longitudinal control spool direction, there is sufficient positive overlap without shock/vibration load; observe the installation orientation with regard to the main direction of acceleration.

hydraulic

Size			6
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	80
Nominal flow		l/min	4 8 16 32
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
Voltage type			Direct voltage
Maximum current consumption	of the amplifier	A	2
Maximum current consumption	of the amplifier (impulse current)	A	3
Solenoid coil resistance	Cold value at 20 °C	Ω	2.65
Solenoid coil resistance	Maximum hot value	Ω	4.05
Actuated time		%	100
Maximum coil temperature 1)		°C	150
Protection class according to DIN EN 60529			IP65 (with mating connector mounted and locked)
Power supply		V	24
Supply voltage range		V	19.4 … 35

1)	Due to the surface temperatures occurring at solenoid coils, the European standards ISO 13732-1 and ISO 4413 need to be adhered to.

(measured with HLP46, ϑÖl = 40 ±5 °C)

Zero flow with central control spool position “V32”

NG6

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

NG6

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

NG6

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

NG6

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

NG6

Load function with maximum valve opening;Rated flow 4, 8, 16 and 32 l/min;Control spool V

NG6

Symbols

With symbol E1-, V1- 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 symbols W and WA have a connection from A → T and from B → T with approx. 3% of the relevant nominal cross-section.

Connection at connector

Connection at mating connector

Inductive position transducer

4WRE 6

Dimensions in mm

1	Valve housing
2	Proportional solenoid "a" with inductive position transducer
3	Proportional solenoid "b"
4	Mating connector "A", color gray, separate order
5	Mating connector "B", color black, separate order
6	Mating connector for inductive position transducer, separate order
7	Plug screw for valves with one solenoid (2 spool positions, version "EA" or "WA")
8	Identical seal rings for ports A, B, P, and T
9	Space required to remove the mating connector
10	Name plate
11	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-flZn-240h-L

tightening torque MA = 7 Nm ± 10%, material no. R913000064 or

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

tightening torque MA = 8.9 Nm ± 10%

1	Valve housing
2	Proportional solenoid "a" with inductive position transducer
3	Proportional solenoid "b"
4	Mating connector "A", color gray, separate order
5	Mating connector "B", color black, separate order
6	Mating connector for inductive position transducer, separate order
7	Plug screw for valves with one solenoid (2 spool positions, version "EA" or "WA")
8	Identical seal rings for ports A, B, P and T (T1)
9	Space required to remove the mating connector
10	Name plate
11	Machined valve contact surface; Porting pattern according to ISO 4401-05-04-0-05 Deviating from the standard: Port T1 with Ø11.2 mm

Spare parts & repair

BOSCH REXROTH
R900954094

Type 4WRE...-2X/...

Set-up:

Function:

Important notice:

Valve with two spool positions: (Type 4WRE…A...)

Notice:

Notice:

general

hydraulic

electrical

(measured with HLP46, ϑÖl = 40 ±5 °C)

Zero flow with central control spool position “V32”

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