HESS Hydraulic Equipment Systems and Solutions

Гидравлическое Оборудование Системы и Решения

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4/2 and 4/3 proportional directional valves, direct operated, wit electrical position feedback, without integrated electronics (OBE) 4WRE

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4/2 and 4/3 proportional directional valves, direct operated, wit electrical position feedback, without integrated electronics (OBE) 4WRE

  • Size 6
  • Component series 2X
  • Maximum operating pressure 315 bar
  • Maximum flow 80 l/min

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

preferably

°C

+40 … +50

Viscosity range

 

mm²/s

20 … 380

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

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

of the amplifier (impulse current)

A

3

Solenoid coil resistance

Cold value at 20°C

Ω

2.65

Maximum hot value

Ω

4.05

Actuated time

 

%

100

Maximum coil temperature 1)

 

°C

150

Protection class according to DIN EN 60529

  IP65 with plug-in connectors mounted and locked

Power supply

 

V

24

Supply voltage range

 

V

19,4 … 35
 

 

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