RE 64322/12.2015, Bosch Rexroth AG
Features
▶ Load pressure independent flow sharing (LUDV)
▶ Closed center for variable displacement pump
▶ Regeneration function in mono block
▶ Floating position function
▶ Integrated pilot oil generation
▶ Primary and secondary pressure limitation
▶ LS pressure limitation for the entire control block
Design
▶ Mono block with two consumer axes
▶ Expandable with directional valves (max. 4)
▶ End plate
▶ Type of actuation
– Hydraulic
– Electrohydraulic
Fields of application
▶ Wheeled loaders
▶ Bulldozers
▶ Crawler-mounted loaders
▶ Size 22
▶ Series 3X
▶ Maximum operating pressure
– on pump side 350 bar
– on consumer side 420 bar
▶ Maximum flow
– on pump side 350 l/min
– on consumer side 300 l/min
RE 64322
Edition: 12.2015
Replaces: 01.2015
2M6-22
Flow sharing control block in mono block / sandwich plate design
M6-22
Functional description 2
Technical Data 4
Characteristic curves 5
Ordering code 6
Symbols 11
Dimensions 14
Project planning aid (e.g. for wheeled loader) 17
Related documents 18
Contents
1
2
3
4
5
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Bosch Rexroth AG, RE 64322/ 12.2015
2 M6-22 | Control block
Functional description
Functional description
Control block M6-22
Proportional directional valve based on the LUDV principle
(load pressure independent flow distribution).
Load pressure compensation, LUDV
The control block M6-22 operates on the LUDV principle.
On this load sensing version, the pressure compensator (3)
is mounted between the main spool (2) and the consumer
ports (A, B).
The maximum load pressure of all consumers involved is
reported to all pressure compensators and simultaneously
to the pump.
In contrast to standard LS designs, with LUDV individual
consumers do not come to an unwanted standstill if the
pump flow is not sufficient to supply all functions with the
required nominal volume. In this case, the speed of all
working movements is reduced in the same ratio.
Consumer control
The main spool (2) is used to determine the flow direction
and the flow level that reaches the consumer ports
(A or B).
The spring chambers (6) are supplied with pilot pressure
either via the pilot ports a and b (hydraulic control) or
internally using integral pressure reducing valves (electrohy-
draulic control). The level of the pilot pressure in the spring
chamber (6) determines the stroke of the main spool (2).
The pressure compensator (3) controls the pressure differ-
ential at the main spool (2).
Load holding
A load holding valve is integrated in the pressure compen-
sator (3) in each functional axis.
Flow limitation
The maximum flow can be individually set to a precise value
using the stroke limiter (7).
Pressure limitation, consumer ports
Pressure relief valves with large nominal widths with com-
bined feed function (5) protect the consumers against
overloads and cavitation.
Floating position
The floating position is achieved either in axis 1 or 2 using a
4-position spool.
Regeneration
To prevent cavitation caused by negative loads in axis1 or 2
(e.g. tipping forward or lowering), the oil in the tank duct is
preloaded by a valve and fed into the consumer A using a
feed valve (4) after the pressure compensator.
194
RE 64322/12.2015, Bosch Rexroth AG
Control block | M6-22
Functional description
3
▼ Section M6-22
A
a
b
B
AB
3
467 612
5
1 Housing
2 Main spool
3 Pressure compensator with load holding
4 Feed valve for regeneration
5 Pressure relief / feed valve
6 Spring chamber
7 Stroke limiter
▼ Design
3
1
2
1 Two-way mono block with inlet function
2 Flange-mountable directional valve
3 End plate
1
2
3
4
5
195
Bosch Rexroth AG, RE 64322/ 12.2015
4 M6-22 | Control block
Technical Data
Technical Data
General
Weight Two-way mono block kg 65
Directional valve kg 15
End plate kg approx. 4
Installation Position Hydraulically operated Any
Electrohydraulically operated Horizontal, pump and tank port upwards
Consumer connection type Flange port according to DIN EN ISO 6162
Ambient temperature range
θ
°C −20 to +80
Priming (standard) One-coat paint RAL 5010
Hydraulic
Maximum working pressure at port P
p
bar 350
A, B, LS
p
bar 420
T
p
bar 30
Y (L)
p
bar Must be routed to tank without pressure
Maximum pilot pressure at port X (Pst)
p
bar 40
a, b
p
bar 40
Pilot pressure range hydraulic
p
bar 0 to 35
Electrohydraulic
p
bar 0 to 35
Maximum flow at port P
q
Vmax
l/min 350
A, B
q
Vmax
l/min
300 (load compensated at 'p = 16bar)
Hydraulic fluid Mineral oil (HL, HLP) according to DIN 51524, other
hydraulic fluids, e.g. HEES (Synthetic ester) according
to VDMA 24568 and hydraulic fluids as specified in
data sheet 90221, on request
Hydraulic fluid temperature range
θ
°C −20 to +80
Viscosity range
ν
mm²/s 10 to 380
Maximum admissible degree of contamination of the hydraulic
fluid, Cleanliness level according to ISO 4406 (c)
Class 20/18/15, we recommend a filter with a mini-
mum retention rate of β
10
≥75
Recommended hydraulic pilot controls Type 4 THF6, 4 TH6, 2 TH6
Control curve 14, see page5
196
RE 64322/12.2015, Bosch Rexroth AG
Control block | M6-22
Characteristic curves
5
Electric
Voltage type DC voltage
On/off valves FTWE 4 K (see data sheet 58008)
Available voltages V 12 24
Solenoid coil resistance at 20 °C Ω 10 40
Power consumption at 20 °C W 14.4 14.4
Duty cycle % 100 100
Proportional value FTDRE 4 K (see data sheet 58038)
Available voltages V 12 24
Solenoid coil resistance at 20 °C Ω 2.4 12
Duty cycle % 100 100
Max. solenoid current mA 1800 800
Recommended chopper frequency
1)
Hz 200 200
Connector version C Junior Timer, 2-pin (AMP)
K DT04-2P (Deutsch)
Type of protection according to
VDE 0470-1 (DIN EN 60529),
DIN 40050-9
Connector version C IP 65 (with installed and locked plug-in connector)
2)
IP67 and IP69K (with Rexroth plug-in connector,
material no. R901022127)
2)
Connector version K IP67 and IP69K (with installed and locked plug-in
connector)
2)
Electronic controls Analog amplifier RA, see data sheet 95230
BODAS control unit RC, see data sheet 95200
Note
▶ Please contact us if the unit is to be used outside the
specified range of values.
▶ The technical data were determined at a viscosity of
ν = 32 mm²/s (HLP46: 50°C).
Characteristic curves
▼ Flow resistance Pump → Consumer
(double ports in axis 1 and 2)
P → A3
P → B3
P → A2
P → B2
P → A1
P → B1
25
20
15
10
5
0 50 100 150 200 250 300
Flow [l/min]
Pressure difference [bar]
▼ TH control curve 14
24.3
0 2 16°55‘14°50‘
6.5
35
Lever angle [°]
Pilot pressure p [bar]
1) The chopper frequency is to be optimized after the application.
Hereby, the use temperature range is to be observed.
2) Plug-in connectors are not included and must be ordered
separately, see data sheet 08006.
1
2
3
4
5
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Bosch Rexroth AG, RE 64322/ 12.2015
6 M6-22 | Control block
Ordering code
Ordering code
Specifications on the name plate
The ordering code is used to record the technical features
and requirements. The Rexroth distribution organization
uses the ordering code to derive a short type and a material
number.
Note
▶ Customer-specific name plate on request.
▶ All functions can only be combined to a limited extent.
Every inquiry requires an individual verification.
01 02 03 04 05 06 07
M6 – . . . . – 3X / M6-22 *
Short type
01 Flow sharing control block (LUDV) M6 series
M6
02 4-digit control block number
. . . .
03 Series 30 to 39 (unchanged installation and connection dimensions)
3X
Spool axes
04 Number of spool axes
2 to 6
Size
05 Size of the series
M6-22
Type of actuation
06
Hydraulic
H
Electrohydraulic
W
07
Customer-specific specifications
*
198
RE 64322/12.2015, Bosch Rexroth AG
Control block | M6-22
Ordering code
7
Overall control block features
01 02 03 04 05 06 07 08 09
M6-22 / J / V 11 *
Spool axes
01 Number of spool axes
2 to 6
Inlet
02
Closed center
J
Primary pressure limitation
03
Without (with threaded plug, retrofitted primary pressure limitation)
Q
With primary pressure relief valve, specified pressure in bar, 3-digit
…
LS pressure limitation
04
Without (with threaded plug, retrofitted LS pressure limitation)
SQ
With LS pressure relief valve, specified pressure in bar, 3-digit
S…
Type of actuation
05
Hydraulic
H
Electrohydraulic
W
LS shuttle
06
No LS shuttle
Z
With LS shuttle (⌀ 1.2 to ⌀ 0.6 mm)
L
Sealing material
07
FKM seals (fluoroelastomer)
V
Consumer ports
08
Flange ports according to ISO 6162
11
09
Further specifications in plain text
*
1
2
3
4
5
199
Bosch Rexroth AG, RE 64322/ 12.2015
8 M6-22 | Control block
Ordering code
Spool axis features
01 02 03 04 05 06 07 08 09 10 11 12 13 14
M6-22-3X / 1
Mono block
1. Spool axis
2
2. Spool axis
3
Flange-mountable
directional valves
3. Spool axis
4
4. Spool axis
5
5. Spool axis
6
6. Spool axis
01 Spool axis number
1 to 6
Spool type
1)
02 Main spool A/B/T blocked in neutral position
E
Main spool A/B→T open in neutral position
J
Main spool A/B→T throttled to tank in neutral position
Q
Main spool rapid traverse
2)
N
4-position spool
3)
W
5-position spool
2)
K
Flow A side B side
03, 04 Flow in consumer port A and B (parameter in l/min, 3-digit)
……
Type of actuation 05 06 07
05
Hydraulic
H
06
Pilot oil port
4)
G1/4 according to DINENISO1179-1 (without adapter)
Z
M16×1.5 / GE10L according to DINENISO8434 (poppet seal)
G
11/16-16UN2A / O-LOK according to SAEJ1453 (O-ring-seal)
O
07
Preferable oil port position
Axial
A
Radial
R
05
Electrohydraulic
W
06
Proportional
24 V
81
12 V
83
Switchable
24 V
61
12 V
63
07
Connector version
Junior-Timer, 2-pin (AMP)
C
DT04-2P (Deutsch)
K
1) For symbols, see 11.
On hydraulic cylinders, specifying the gear ratio is required, as
inlet and outlet characteristic curves are created for E and Q
spools. Further spool types on request.
2) Only possible in spool axis 2
3) Only possible in spool axis 1 and 2
4) See “Line connections” on page 14
200
RE 64322/12.2015, Bosch Rexroth AG
Control block | M6-22
Ordering code
9
Shuttle
08
No shuttle
00
With shuttle ⌀ 0.6 mm
06
With shuttle ⌀ 0.8 mm
08
With shuttle ⌀ 1.0 mm
10
With shuttle ⌀ 1.2 mm
12
Secondary valves A side B side
09
10
Without
ZZ
Anti-cavitation valve
EE
Pressure relief / feed valve, specified pressure in bar, 3-digit
H… H…
Regeneration/check valve
11 Without
Z
With regeneration valve
5)
A
Consumer ports A side B side
12
13
Connections on the pressure compensator side BZ BZ
Connections on the opposite side of the pressure compensator
ZD ZD
Double ports
5)
BD BD
Pressure compensator bypass
14 Without
Z
With pressure compensator bypass ⌀ 5mm
6)
5
With pressure compensator bypass ⌀ 8mm
6)
8
5) Only possible in spool axis 1 and 2
6) Required when using power-controlled pump
1
2
3
4
5
201
Bosch Rexroth AG, RE 64322/ 12.2015
10 M6-22 | Control block
Ordering code
End plate
01 02 03 04 05 06 07
M6-22-3X / E *
Plate type
01 End plate
E
Line connections
02
Without ports
Z
Metric thread according to ISO 6149-1
G
Pilot oil supply
03
Without
ZZ
Internal pilot oil generation for internal and external use
YY
Internal pilot oil generation for external use
YZ
Pilot oil switch-off
04
Without
Z
With switch-off valve
A
Unloading function
05
Without
Z
With unloading valve
U
With unloading valve with improvement in pump dynamics (with residual amount)
R
Flushing port
06
Without
Z
With flushing ports
S
07
Further specifications in plain text
*
202
RE 64322/12.2015, Bosch Rexroth AG
Control block | M6-22
Symbols
11
Symbols
Main spool
Ordering code Main use Symbol
E
– Hydraulic cylinder as consumer
– Spool with blocked ports A/B in neutral position
BP“P‘ A
T
h
TSP
J
– Hydraulic motors as consumers
– Consumer ports A/B → T open in neutral
position
BP“P‘ A
T
h
TSP
Q
– Hydraulic cylinder and motors as consumers
combined with pipe burst safety valve, check Q
meter and lowering brake valve
– Spool with defined residual opening (A/B → T)
in neutral position
– Consumer port unloaded in neural position
BP“P‘ A
T
h
TSP
W
– 4-position spool
– Floating position (A/B→T), connection via
pressure jump on control unit (4th position)
– Hydraulic cylinder as consumer
– Spool with blocked ports A/B in neutral position
BP“P‘ A
T
h
TSP
N
– Rapid traverse for P kinematics
– Differential circuit
– Spool with blocked ports A/B in neutral position
BP“P‘ A
T
h
TSP
K
– 5-position spool
– Lowering → Differential circuit → Floating
(floating via pressure jump) Bulldozer power
regeneration (4th position)
– Floating position (A/B→T), connection via
pressure jump on control unit (5. position)
BP“P‘ A
T
h
TSP
1
2
3
4
5
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Bosch Rexroth AG, RE 64322/ 12.2015
12 M6-22 | Control block
Symbols
Control block
▼ Hydraulic actuation, example 2-way mono block with 1 directional valve
LS
T
P
B1
5
2
3
6
1
7
9
8
A1
B1
A1
B2
A2
B2
A2
B3
A3
a3
a2
a1 b1
b2
b3
1 Two-way mono block
2 Directional valve
3 End plate (no function)
5 Stroke limiter
6 Secondary pressure relief valve
7 Tank pre-loading valve
8 LS pressure relief valve
9 LS flow controller
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RE 64322/12.2015, Bosch Rexroth AG
Control block | M6-22
Symbols
13
▼ Electrohydraulic actuation, example 2-way mono block with 1 directional valve
LS
T
P
B1
5
2
3
6
1
7
9
8
A1
B1
A1
L
Pst
B2
A2
B2
A2
B3
LAC Pst
A3
a2
1 Two-way mono block
2 Directional valve
3 End plate (with function)
5 Stroke limiter
6 Secondary pressure relief valve
7 Tank pre-loading valve
8 LS pressure relief valve
9 LS flow controller
1
2
3
4
5
205
Bosch Rexroth AG, RE 64322/ 12.2015
14 M6-22 | Control block
Dimensions
Dimensions [mm]
Dimensions
Line connections
Ports Dimension Relevant standard
P Pump port
DN 25 (SAE 1 in 6000 PSI) DIN ISO 6162-2
T Tank port
DN 28 (SAE 1 1/4 in 3000 PSI) DIN ISO 6162-1
A, B Consumer ports DN19 (SAE 3/4 in 6000 PSI) DIN ISO 6162-2
LS Load sensing
M14 × 1.5 DIN EN ISO 6149-1
Pst Pilot oil supply
M14 × 1.5 DIN EN ISO 6149-1
L Tank port, depressurized
M14 × 1.5 DIN EN ISO 6149-1
AC Accumulator port (pilot oil)
M14 × 1.5 DIN EN ISO 6149-1
a, b Pilot oil ports
– Standard, without adapter (Z design) G 1/4 DIN EN ISO 1179-1
– Poppet seal, with adapter for pipe connection
(G design)
M16×1.5 / GE10L DINENISO8434
11
M16x1.5
– O-ring seal, with adapter for pipe connection
(O design)
11/16-16UN2A / O-LOK SAE J 1453-3
11/16-16UN2A
11.5
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RE 64322/12.2015, Bosch Rexroth AG
Control block | M6-22
Dimensions
15
Dimensions [mm]
▼ Hydraulic actuation, example 2-way mono block with 1 directional valve
107
a3
P
T
A
B
LS
a1
a2
44
55
110
165
12
228
179
176
57
117
179
276
44
176
182
240
344
90
225
117
179
276
220
115
40
165
202
453
103
102.6
130.5
72 20
1
2 3
4.1
4.2
5
6
8
7
10
13
11
12
9
117
165
202
107
115.5
179
276
A
b3b1 b2
117
View A
1 Two-way mono block
2 Directional valve
3 End plate (no function)
4.1 Control cover A side
4.2 Control cover B side
5 Stroke limiter
6 Secondary pressure relief valve
7 Tank pre-loading valve
8 LS pressure relief valve
9 LS flow controller
10 Double nipple with shuttle valve
11 Three fastening threads M12, 19 deep
12 Name plate
13 Tie rod
1
2
3
4
5
207
Bosch Rexroth AG, RE 64322/ 12.2015
16 M6-22 | Control block
Dimensions
Dimensions [mm]
▼ Electrohydraulic actuation, example 2-way mono block with 1 directional valve
a3
P
T
A
B
LS
a1
a2
44
55
110
165
12
228
179
176
57
117
276
44
176
182
90
225
276
220
115
40
165
202
494
103
143
1
23
4.1
4.2
5
6
8
7
13
11
12
9
A
117
120
337
179
77
82
28
70
172
b1
L
a1 b2 a2
a
b
134.5
240
72
379
46
137.5
104.5 37 39 37
44.5
33
342
45
10
Pst
View A
1 Two-way mono block
2 Directional valve
3 End plate (with function)
4.1 Control cover A side
4.2 Control cover B side
5 Stroke limiter
6 Secondary pressure relief valve
7 Tank pre-loading valve
8 LS pressure relief valve
9 LS flow controller
10 Electro-proportional pressure control valve
11 Four fastening threads M12, 19 deep
12 Name plate
13 Tie rod
208
RE 64322/12.2015, Bosch Rexroth AG
Control block | M6-22
Project planning aid (e.g. for wheeled loader)
17
Project planning aid (e.g. for wheeled loader)
General information
Project number:
Customer:
Machine type:
Machine designation:
Stroke cylinder: Bottom Ø: mm
Rod Ø: mm
Active stroke: mm
Number: units
Tip cylinder: Bottom Ø: mm
Rod Ø: mm
Active stroke: mm
Number: units
Diesel engine data
Designation:
Power: kW
Load speed: rpm
Max. speed: rpm
Pump
Designation:
Displacement: cm³/rev
Nominal speed: rpm
Pump control 'p: bar
Controller type:
Maximum pump pressure: bar
Supplementary information
Cycle times
Kinematics: Lifting: sec at mm stroke
Z kinematics
Lowering: sec at mm stroke
P kinematics (parallel)
Depressurized lowering: sec at mm stroke
Tipping backwards: sec at mm stroke
Tipping forwards: sec at mm stroke
Option A: l/min
Option B: l/min
1
2
3
4
5
209
18
Bosch Rexroth AG, RE 64322/12.2015
Bosch Rexroth AG
Mobile Applications
Zum Eisengießer
97816 Lohr am Main, Germany
Tel. +49 9352 18-0
info.ma@boschrexroth.de
www.boschrexroth.com
© This document, as well as the data, specifications and other information set
forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
reproduced or given to third parties without consent. The information is
provided solely for the purpose of product description. It cannot be used to
draw conclusions regarding a specific characteristic or suitability for a specific
application. The information given does not release the user from the
obligation of own judgment and verification. It must be remembered that our
products are subject to a natural process of wear and aging.
M6-22 | Control block
Related documents
Related documents
The M6-22 control blocks are system components.
Observe the instructions for the other system components.
Only commission the product if the following documenta-
tion is available to you and you have understood and
observed it.
Title Document number Document type
Control blocks for mobile applications 64025-B Instruction manual
System documentation from the machine manufacturer Instruction manual
210