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R901128201 - Directional spool valves, direct operated, with solenoid actuation - BuyRexroth

Directional spool valves, direct operated, with solenoid actuation

Material #: R901128201

$397.00

4/3-, 4/2- or 3/2-way version Standard version Porting pattern according to DIN 24340, form A Wet-pin DC solenoids Solenoid coil can be rotated The coil can be changed without having to open the pressure-tight chamber Electrical connection as individual connection Concealed manual override

Product lead time: 122 days

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Directional valves of type WE are solenoid-actuated directional spool valves. They control the start, stop and direction of a flow.

The directional valves basically consist of the housing (1), one or two solenoids (2), the control spool (3), and one or two return springs (4). In the de-energized condition, control spool (3) is held in the central position or in the initial position by the return springs (4). The control spool (3) is actuated by wet-pin solenoids (2).

To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with oil!

The force of the solenoid (2) acts via the plunger (5) on the control spool (3) and pushes the latter from its rest position to the required end position. In this way, the required direction of flow according to the symbol is released. After de-excitation of the solenoid (2), the return spring (4) pushes the control spool (3) back to its rest position.

The manual override (6) allows control spool (3) to be moved without solenoid energization.

Type 4WE 6 E7X/H…

01

02

03

04

05

06

07

08

09

10

11

12

WE

6

7X

/

H

N9

/

*

01

3 main ports

3

4 main ports

4

02

Directional valve

WE

03

Size 6

6

04

Symbols e. g. D, E etc.; possible design see Symbols

05

Component series 70 … 79 (70 … 79: unchanged installation and mounting dimensions)

7X

06

With spring return

no code

Without spring return with detent

OF1)

07

Standard solenoid wet (wet-pin)

H

08

Direct voltage 12 V

G12

Direct voltage 24 V

G24

09

With concealed manual override

N9

Electrical connection

10

Individual connection

Without mating connector, with connector DIN EN 175301-803

K42)

Without mating connector, with connector AMP Junior-Timer

C4Z 2)

Seal material

11

NBR seals

no code

Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)

12

Further details in the plain text

*

1) Only symbol D
2) Mating connectors, separate order, see data sheet 08006.

Preferred types and standard units arecontained in the EPS (standard price list).

general

Size

6

Weight (approx.)

Valve with one solenoid

kg

1.25

Valve with two solenoids

kg

1.6

Installation position

any

Ambient temperature range

°C

-30 … +50

hydraulic

Size

6

Maximum operating pressure

Port P

bar

315

Port A

bar

315

Port B

bar

315

Port T 1)

bar

160

Maximum flow

l/min

60

Hydraulic fluid

see table

Hydraulic fluid temperature range

°C

-30 … +80

Viscosity range

mm²/s

2.8 … 500

Maximum admissible degree of contamination of the hydraulic fluid 2)

Class 20/18/15 according to ISO 4406 (c)
1) With symbols A and B, port T must be used as leakage oil connection if the operating pressure exceeds the admissible tank pressure.
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

Suitable sealing materials

Standards

Mineral oils

HL, HLP, HLPD, HVLP, HVLPD

NBR, FKM

DIN 51524

Bio-degradable

Insoluble in water

HETG

NBR, FKM

VDMA 24568

HEES

FKM

Soluble in water

HEPG

FKM

VDMA 24568

Containing water

Water-free

HFDU, HFDR

FKM

ISO 12922

Containing water

HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620 )

NBR, HNBR

ISO 12922

Important information on hydraulic fluids!

For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us!

There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)!

The flash point of the hydraulic fluid used must be 40 K higher than the maximum solenoid surface temperature.

Flame-resistant – containing water:

Maximum pressure differential per control edge 50 bar.

Pressure pre-loading at the tank port >20% of the pressure differential; otherwise, increased cavitation

Life cycle compared to operation with mineral oil HL, HLP 50 to 100 %

Bio-degradable: When using bio-degradable hydraulic fluids that are zinc-solving, zinc may accumulate in the fluid (700 mg zinc per pole tube)

Notices!

Only actuate the manual override using a rounded tool (Ø3+1 mm) or special tool (separate order, material no. R900024943)! Actuation of the manual override only up to a tank pressure 50 bar. When the manual override is blocked, the actuation of the solenoid must be prevented! The simultaneous actuation of the solenoids must be prevented!

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

electrical

Voltage type

Direct voltage

Available voltages

V

12 / 24

Voltage tolerance (nominal voltage)

%

± 10

Power consumption

W

26

Duty cycle

%

100

Maximum coil temperature 1)

°C

150

Switching time according to ISO 6403

ON

ms

20 … 45

OFF

ms

10 … 25

Maximum switching frequency

1/h

15000

Protection class according to DIN EN 60529

IP65 (with mating connector mounted and locked)

Insulation class VDE 0580

F
1) Due to the high surface temperatures of the solenoid coils >50 °C, the standards ISO  13732-1 and ISO 4413 must be adhered and the coils must be equipped with contact protection, if required.

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

Δp-qV characteristic curves

7

Symbol "H" in central position P – T

8

Symbol "G" in central position P – T

Symbol

Direction of flow

P-A

P-B

A-T

B-T

A, B

3

3

C

1

1

3

1

D, Y

4

4

3

3

E

3

3

1

1

J

1

1

2

1

G

6

6

7

7

H

2

5

2

2

Switching power limits (measured with HLP46, ϑOil = 40 ±5 °C)

Notice!

The specified switching power limits are valid for use with two directions of flow (e. g. from P to A and simultaneous return flow from B to T).

Due to the flow forces acting within the valves, the admissible switching power limits may be considerably lower with only one direction of flow (e. g. from P to A while port B is blocked)!

In such use cases, please consult us!

The switching power limit was established while the solenoids were at operating temperature, at 10 % undervoltage and without tank preloading.

DC solenoid

Characteristic curve

Symbol

1

A, B

2

C, Y

3

E

4

J

5

D

6

G, H

7

D/OF

1) Only symbol D
2)Example: Symbol E with switching position "a" Ordering code ..EA..

Version "K4"

Dimensions in mm

Required surface quality of the valve contact surface

1.1

Solenoid “a”

1.2

Solenoid “b”

2

Mating connector without circuitry (separate order)

3

Mating connector with circuitry (separate order)

4

Name plate

5

Space required to remove the mating connector

6

Space required to remove the coil

7

Mounting nut, MA = 4+1 Nm

8

Plug screw for valve with one solenoid

9

Identical seal rings for ports A, B, P, and T

10

Porting pattern according to DIN 24340 form A

Version "C4Z"

Dimensions in mm

Required surface quality of the valve contact surface

1.1

Solenoid “a”

1.2

Solenoid “b”

4

Name plate

5

Space required to remove the mating connector

6

Space required to remove the coil

7

Mounting nut, MA = 4+1 Nm

8

Plug screw for valve with one solenoid

9

Identical seal rings for ports A, B, P, and T

10

Porting pattern according to DIN 24340 form A

11

Mating connector "Junior Timer", straight (separate order, see data sheet 08006)

12

Mating connector "Junior Timer", angled (separate order, see data sheet 08006)

Subplates according to data sheet 45052 (separate order)

G 341/01 (G1/4)

G 342/01 (G3/8)

G 502/01 (G1/2)

Valve mounting screws (separate order)

4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9-flZn-240h-L

(friction coefficient μtotal = 0.09 to 0.14);

tightening torque MA = 7 Nm ± 10 %,

material no. R913000064

or

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

with friction coefficient μtotal = 0.12 to 0.17 a

tightening torque MA = 8.1 Nm ± 10 % results

(not included in the Rexroth delivery range)

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)

Data sheet

Spare parts & repair

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)

Data sheet

Spare parts & repair

Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit

3P Z5L1

Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit

3P Z5L1

For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)

Data sheet

Spare parts & repair

Mating connectors for valves with connector “K4”, with rectifier

3P RZ5

Mating connectors for valves with connector “K4”, with rectifier

3P RZ5

For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)

Data sheet

Spare parts & repair

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