re64279 2005 06...high-pressure load-sensing control 1/18 block of sandwich plate design type m4-22...

1/18High-pressure load-sensing control

block of sandwich plate design

Type M4-22

Nominal size 22Series 1XNominal pressure 350 bar (pump side)Nominal pressure 420 bar (actuator side)Nominal flow– Pump side: • 400 L/min (Inlet element) • 600 L/min (with P1 and P2 ports)— Actuator side: • 400 L/min

RE 64279/06.05

Table of contents

Contents Page

Features 1

Function, section, symbols 2

Technical data 3

Ordering code 4 and 5

Order examples 6 and 7

Inlet, directional valve and end element 8 to 16

(symbols, circuit features, characteristic curves)

Unit dimensions, ports 17 and 18

Table of contents

System

– Load pressure-independent flow control

• Open center for fixed displacement pump

• Closed center for variable displacement pump

Design

– Sandwich plate de sign

• Inlet element

• Up to 8 directional valve elements

• End element

H7318

– Types of actuation

• mechanical

• hydraulic

• electrohydraulic (on/off, proportional)

Flow

— Load pressure-compensated

— High repeatabillity

— Low hysteresis

— Adjustable via stroke limiter

Pressure relief function

— Inlet element

• Pilot operated pressure relief valves of large nominal width

— Directional valve element / actuator ports

• Relief valves with anti-cavitation function

— LS pressure limitation

• Adjustable for each actuator port

• External pressure adjustment possible for each actuator

Fields of Application

— Cranes

— Drilling machines

— Forestry machines

— Others

Features

2/18 Bosch Rexroth AG Hydraulics M4-22 RE 64279/06.05

TLS

Y

X

P

MA

A B

MB

T

Function, section

M4-22 control block

The directional valves are proportional valves according to the

load-sensing principle. They can be operated mechanically, hy-

draulically or electrohydraulically.

Actuator control with electrohydraulic operation

The position of the main spool (2) in relation to the housing (1)

determines the direction and magnitude of a flow that is fed to

the actuator ports (A or B).

In the non-operated condition, the main spool is centred by

compression springs (11). There is no connection from „P“ to

„A“ or „B“.

The intensity of the elctrical control current determines the

amount of the pilot pressure in the spring chambers and thus

the stroke of the main spool (P → A; P → B).

The pressure compensator (3) keeps the pressure differenti-

al across the main spool (2) and thus the flow to the actuator

constant.

Ports

P Pump

A, B Actuator

T Tank

X Pilot oil supply

Y Pilot oil drain

LS Load-Sensing (LS)

MA, M

B Measuring ports

Symbol

1 Housing

2 Main spool

3 Pressure compensator

4 LS pressure relief valve

5 Secondary pressure / anti-cavitation valve

6.1 Stroke limiter, A-side

6.2 Stroke limiter,B-side

7 LS shuttle

8 Spring chamber

9 Pilot pressure switch-off

(pilot “a“ and „b“)

10 Pressure reducing valve

(pilot valve a, b)

11 Compression springs

Load pressure compensation

Changes in pressure at the actuators or the pump are compen-

sated for by the pressure compensator (3). The flow to the ac-

tuator remains constant even under differing loads.

Flow limitation

The maximum flow can be individually, mechanically adjusted

by means of stroke limiters (6.1/6.2).

Pressure relief function

The LS pressure per actuator port can be influenced for each

actuator port by means of LS pressure relief valves (4) or exter-

nally via the LS ports MA, MB.

Relief valves with integrated anti-cavitation function (5) protect

the actuator ports A and B against pressure peaks.

The highest load pressure is signalled to the pump via the LS

line and integrated shuttle valves (7).

9 4 7 1 3 2

6.1

10

11 8 5

6.2

10

9

7

A

P T

A B

“a”

“b”

524

MB

MA

3

P XYLS

5

Hydraulics Bosch Rexroth AGRE 64279/06.05 M4-22 3/18

Technical data (for applications outside these parameters, please consult us!)

general

Design Sandwich plate design

System Load-Sensing (LS)

Type M4

Size 22

Installation position optional

Type of connection SAE

Weight Inlet element: Open center kg 28

Closed center kg 28

Directional valve element,

mechanical

kg 24

Directional valve element, hydraulic kg 29

Directional valve element, electrohydr. kg 33

End element kg 13

Hydraulic fl uid and ambient temperature range ϑ °C —20 to +80

hydraulic

Flow Port P qV,

maxL/min 400

600 with P1 and P2 ports

Port A, B qV,

maxL/min 400 with pressure compensator and load-holding function

Nominal pressure max. pnom

bar 350

Operating pressure

max. in port

P / LS p bar 350

A / B p bar 420

T p bar 30

Y p bar at zero pressure to tank

Pilot pressure max.

in port

X p bar 35

a, b p bar 35

Pilot pressure

range

hydraulic p bar 8.5 to 22.5

elektrohydraulic p bar 8.7 to 26

Recommended hydraulic pilot control devices TH 6... characterictic curve 97, see RE 64552

LS pressure relief function (adjustment ranges)

(selected in the factory)

bar 50 to 149

150 to 350

Hydraulic fl uid Mineral oil (HL, HLP) to DIN 51524

Other fl uid on enquiry, e.g. HEES (synthetic esthers) to VDMA

24568 as well as hydraulic fl uids as specifi ed in

RE 90221

Viscosity range ν mm2/s 10 to 380

haydraulic fl uid max. permissible degree of contamination to

ISO 4406 (c)

class 20/18/15

electric

Electrical pilot control valves FTWE 4 K...; see RE 58008

FTDRE 4 K...; see RE 58038

Recommended amplifi ers

(other control options on enquiry)

Analogue amplifi er:

RA 1.0 and 2.1 (in preparation)

Digitalamplifi er:

RC-Family (RE 95200)

Note!

The technical data was determined at a viscosity range of ν = 30 mm2/s (HLP46: 50°C).


No. of direc-

tional valves

1 to 8

Size 22 = 22

Series 10 to 19 = 1X

(10 to 19: unchanged installati-

on and connection dimensions)

Open Center = P

Closed Center = J

Without primary pressure relief valve = Q

(not with version „P“)

With primary pressure relief valve = . . .

(pressure details in bar, 3-digits)

Pilot oil supply

With internal pilot oil supply = Y

For external pilot oil supply = X

Without pilot pressure switch-off and LS damping shuttle = 1

With pilot pressure switch-off = 2

With LS damping shuttle = 3

With pilot pressure switch-off and LS damping shuttle = 4

With pressure compensator, with load-holding function (standard) = S

Without pressure compensator, with load-holding function = C

With LS pressure relief valve = … M …(pressure details in bar, 3-digits)

With LS pressure relief plug screw = Q M Q

(LS pressure relief valve can be retrofi tted)

Without LS pressure relief valve = Z Z Z 1)

(LS pressure relief valve can not be retrofitted))

Housing with measuring ports = M

Housing without measuring ports = Z

Spool symbol

= E = Q

= J

Secondary valves

H...H... = Pressure relief

anti-cavitation valves, pre-

operated (see table)

Q = Plug screw

(Secondary valves

can be retrofi tted)

Details required only for type

of operation „H“ and „H3“

Damping shuttle

00 = Without (Standard)

06 = With ∅ 0.6 mm

07 = With ∅ 0.7 mm

08 = With ∅ 0.8 mm

Details required only for type of

operation „H3“, „W2“, „W3“

and „W4“

Junior Timer 2-pin (AMP) 2)

1 = Supply voltage 24 V


DT04-2P (Deutsch) 2)



Operation cover A

M = Mechanical 1)

H = Hydraulic

W2 = Electrohydraulic proportional

W4 = Electrohydraulic switchable

H3 = Hydraulic with pilot oil switch-off

W3 = Electrohydraulic proportional

with pilot oil switch-off

...—... = Flow in L/min, 3-digits,

e.g. 320-320;

Actuator ports „A“ and „B“

M4 22 1X

Ordering code

Short code Inlet element Directional valve elements

2 spool axis

3 spool axis

Actu

ato

r p

ort

"A

"

Actu

ato

r p

ort

"B

"

Continued on

page 51 spool axis

1) Mechanical is only without LS pressure relief valve (ZZZ)

2) Mating plugs are not included in the scope of supply and

must be ordered separately


Ordering code

L V 11 *

End ele men t Additional details

Further details in clear text

11 = Ports as SAE

End element

A = End element without ports, with internal LS unloading

Z = End element with LS port, without internal LS unloading

P = End element with P2 port

R = End element with P2 and LS port

T = End element with T2 port

Preferred spool types

Symetric spools

Spool typePressure

compensatorFlow in L/min (other flows can be set on the stroke limiter)

E, J, Q S

400-400 300-300 200-200 130-130 080-080

360-360 270-270 180-180 115-115 072-072

320-320 240-240 160-160 100-100 065-065

Pressure setting in bar in actuator ports A and B

H050 = 50 bar H140 = 140 bar H210 = 210 bar H280 = 280 bar




H125 = 125 bar H190 = 190 bar

Complete control blocks are to be defined in accordance with

the type code.

The order text is used to collate the technical features and re-

quirements.

The Rexroth Sales Organisation derives a short code and a

material number from the order text.

Example of a short code of an M4-22 control block with three

directional valve elements.

= Prefered type

M4 — 6789 — 1 0 / 3 M4 — 22

Control block no.

No. of directional

valve elements

Series of type (1X) revision index of series


LS

Order example: Open center

3 M4 22 1X P250 Y 1

LA V 11

Example: — Fixed displacement pump qV.max

= 400 L/min

— 3 actuators

— Electrohydraulic operation

Assembled control block

Inlet ele-

ment:

• Open center with primary valve set to 250 bar,

with internal pilot oil supply, without pilot pres-

sure switch-off and LS damping shuttle,

Directional valve elements:

1. spool axis • With pressure compensator, with

load-holding function

• Without LS pressure relief valves

• Spool symbol J, flow in A and B 400 L/min

• Type of operation: hydraulic with pilot oil

switch off

• with Junior Timer 2-pin (AMP) 24 V

• Secondary valve: actuator port A and B plugged



• With LS pressure relief valves,

actuator port A and B set to 180 bar


• Type of operation: electrohydraulic

proportional

• with Junior timer 2-pin (AMP) 24 V

• Secondary valve:

actuator port A and B 350 bar




actuator port A set to 180 bar,

actuator port B set to 120 bar



proportional with pilot oil switch-off


• Secondary valve: actuator port A and B 350 bar

End element • LS unloading, ports as SAE

Ordering code:

1. spool axis

2. spool axis

3. spool axis

S 180M180 J 400-400 W2 1 H350 H350

S ZZZ J 400-400 H3 1 00 Q Q

S 180M120 J 085-085 W3 1 H350 H350


Order example: Closed Center

3 M4 22 1X J250 Y 3

LA V 11

1. spool axis

2. spool axis

3. spool axis

Example: — Variable displacement pump qV.max

= 400 L/min

— 3 actuators

— Electrohydraulic operation

Assembled control block:

Inlet ele-

ment:

• Closed center with primary valve set to 250 bar

with internal pilot oil supply, with LS damping

shuttle

Directional valve elements:



• Without LS pressure relief valves


• Type of operation: hydraulic with pilot oil

switch-off

• with Junior Timer 2-pin (AMP) 24 V

• Secondary valve: actuator port A and B plugged




actuator port A and B set to 180 bar


• Type of operation: electrohydraulic proportional

• With Junior timer 2-pin (AMP) 24 V


3. spool axis • With pressure compensator,

with load-holding function


actuator port A set to 180 bar,

actuator port B set to 120 bar



proportional with pilot oil switch-off



End element • LS unloading, ports as SAE

Ordering code

S ZZZ J 400-400 H3 1 00 Q Q

S 180M180 J 400-400 W2 1 H350 H350

S 180M120 J 200-200 W3 1 H350 H350

LS


Inlet elements

With internal pilot oil supply, pilot oil of other actuators may also be drained via the X port.

This may however have an influence on the switching times of the M4-22.

Please contact the technical sales department for possible effects.

With external pilot oil supply, port „X“ is generally not plugged. If it is not used (e.g. with hydraulic control „H“), it must be plugged.

Inlet element

Closed Center with primary valve

with internal pilot oil supply

• without pilot pressure switch-off and

LS damping shuttle

Ordering detail J…Y1

Short description

• For variable displacement pump

• Pressure details to be given after J…

(3 digits)

Inlet element

Open Center with primary valve

for external pilot oil supply


LS damping shuttle

Ordering detail P…X1

Short description

• For fixed displacement pump

• Pressure details to be given after P…

(3 digits)

Inlet element

Open center with primary valve



LS damping shuttle

Ordering detail P…Y1

Short description

• For fi xed displacement pump

• Pressure details to be given after P…

(3 digits)

Inlet element




LS damping shuttle

Ordering detail J…X1

Short description

• For variable displacement pump

• Pressure details to be given after J…

Attention!

Directional valve element





LS

X

M

YP T

Inlet element

Closed Center without primary valve



LS damping shuttle

Ordering detail JQY1

Short description

• For LS variable displacement pump

• Pressure details not required

Inlet elements

Inlet element



• with LS damping shuttle

Ordering detail J … Y3

Short description


• Presure details to be given after J…

Inlet element



• with pilot pressure switch-off and

LS damping shuttle

Ordering detail J … Y2

Short description


• Presure details to be given after J…

Inlet element

Closed center without primary valve



LS damping shuttle

Ordering detail JQX1

Short description


• Pressure details not required






Ordering detail

Flow in L/min

Main application Symbol

E …—… Hydraulic cylinders as actuator

J …—… Hydraulic motors as actuator

Q …—… Application with defined residual

opening (A/B → T)

Actuator port unloaded in the neutral

position

Directional valve elements: Spools

Spool symbol


Directional valve elements: Pressure compensator

Directional valve elements: Pressure compensator

When the main spool (3) is in the central position, there is no

connection between P and the actuator ports A and B. In this

operating state, the pump pressure pushes the pressure com-

pensator spool (1) to the left against the spring (2).

When the main spool (3) (= metering orifice) is operated the

LS pressure is fed to the spring chamber (4) and pushes the

pressure compensator spool to the right to the control position.

The flow is kept constant, even with parallel operation of actua-

tors with different load pressures.

Pressure compensator variant “S“ is provided with a load-hol-

ding function. This function is not leak-free.

The number of washers (5) inserted determines the pressure

difference and thereby the required flow.

Preferred types

Flow in L/min (other flows can be set on the stroke limiter)

Symmetric spools

400-400 300-300 200-200 130-130 080-080

360-360 270-270 180-180 115-115 072-072

320-320 240-240 160-160 100-100 065-065

Flow without washer (pressure compensator (pressure compensator ∆p = 6 to 9 bar)

Flow with 1 washer (pressure compensator ∆p = 7.5 to 10 bar)

Flow with 2 washers (pressure compensator ∆p = 9 to 12 bar)

Example:

Command value: Qactuator

= 380 L/min → 360 Liter spool + 2 washers = 400 L/min

→ set 380 L by means of stroke limiter

Operation of the main spool

4 2 5 31

4 2 5 31

Central position of the main spool


Directional valve elements: Pressure compensator, load-holding function

1) The load-holding function is not leak-free.

Ordering detail S

Short description

• With pressure compensator

• With load-holding function 1)

• Max. flow 400 L/min

Ordering detail C

Short description

• Without pressure compensator

• With load-holding function 1)

• At ∆p = 18 bar


Directional valve elements: LS pressure relief function, secondary valves

With LS pressure relief valve

Ordering detail … M …

Short description

• Pressure to be detailed for actuator ports „A“

and „B“ (3 digits), e.g. 180M120

• With version „QMQ“ the LS pressure relief

function can be retrofitted to the directional

valve element.

• The LS pres sure can be externally in flu enced

via ports MA and MB. These ports can also

be used as measuring points.

Without LS pressure relief valve

Ordering detail ZZZ

Short description

• LS pressure relief valve cannot be retrofitted

• Housing without measuring ports

Secondary valves

Ordering detail QH …

Short description

• Plug for port A

• Pressure relief / anti-cavitation valve port B

• Example: QH200

• The directional valve is provided for retrofitting

secondary valves

Attention!

Pressure relief valves are re strict ed suitable as

pressure limiters!


Directional valve elements: Types of operation

Hydraulic

Ordering detail H

Short description

Recommended hydraulic pilot control devices:

Type TH6 to RE 64555,

Control curve 97

Mechanical

Ordering detail M

Short description

• Tongue without hand lever

Hydraulic with pilot oil switch-off

Ordering Short description

H31 24 V (AMP-plug)

H33 12 V (AMP-plug)

H38 24 V (Deutsch-plug)

H39 12 V (Deutsch-plug)


Directional valve elements: Types of operation

Electrohydraulic proportional with

pilot oil switch-off


W38 Electrohydraulic

proportional 24 V


proportional 12 V

On/off valves type FTWE 4 K to RE 58008

Proportional valve type FTDRE 4 K to RE 58038

Plug: DT04-2P (Deutsch)1)

Electrohydraulic proportional



proportional 24 V


proportional 12 V

Proportional valve type FTDRE 4 K to RE 58038

Plug: Junior Timer 2-pin (AMP)1)

Electrohydraulic switchable



switchable 24 V


switchable 12 V

On/off valves type FTWE 4 K to RE 58008

Plug: Junior Timer 2-pin (AMP)1)

1) Mating plugs are not included in the scope of

supply and must be ordered separately !


End elements

End element with LS port

(LS unloading must be ensured externally)

Ordering detail LZ

For the connection of additional LS actuators

End element with LS unloading

Ordering detail LA

End element with P2 port

Ordering detail LP

End element with P2 port and with LS port

Ordering detail LR

End element with T2 port

Ordering detail LT

29

110

118 112


Unit dimensions: Control block as open center version (Unit dimensions in mm)

1 Inlet element

2 Directional valve element

3 End element

4 Control cover for

electrohydraulic operation

5 Control cover

6 Stroke limiter

7 Relief valve

8 Tie rod

9 Name plate

10 Measuring port M

11 Pilot oil supply

(Mounting hole)

© This document, as well as the data, specifi cations and other

information set forth in it, are the exclusive property of Bosch Rexroth

AG. Without their consent it may not be reproduced or given to third

parties.

The data specifi ed above only serve to describe the product. No

statements concerning a certain condition or suitability for a certain

application can be derived from our information. The given information

does not release the user from the obligation of own judgement and

verifi cation. It must be remembered that our products are subject to a

natural process of wear and aging.

Bosch Rexroth AG

Hydraulics

Zum Eisengießer 1

97816 Lohr am Main, Germany

Telefon +49 (0) 93 52 / 18-0

Telefax +49 (0) 93 52 / 18-23 58

[email protected]

www.boschrexroth.de


27,8 ±0,2

57,1

±0,

2

M12; 19SAE 1M14; 22

66,7

±0,

2

31,8 ±0,2

SAE 1-1/4

30,2 ±0,2

58,7

±0,

2

M10; 16SAE 1-1/4

high pressure high pressure

Ports (Unit dimensions in mm)

Ports

T SAE 1 1/4″ (standard pressure)

P SAE 1 1/4″ (high pressure)

A1... A3

B1... B3SAE 1″ (high pressure)

LS1, LS2, M1,

M2, X1, X2, Y1, Y2,

MA, M

B, a, b, V G 1/4

Master gage for SAE connecting flange

standard pressure




parties.







Bosch Rexroth AG

Hydraulics

Zum Eisengießer 1


Telefon +49 (0) 93 52 / 18-0

Telefax +49 (0) 93 52 / 18-23 58

[email protected]

www.boschrexroth.de


Notes

re64279 2005 06...high-pressure load-sensing control 1/18 block of sandwich plate design type m4-22...

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