Rexroth Hydraulics
Z4WEH; Z4WH 1/10
RE 24 761/10.97
Contents
Description Page
Features 1
Ordering details 2
Symbols 3
Section 4
Technical data 5, 6
Characteristic curves 6
Unit dimensions 7, 8
Accessories 9
RE 24 761/10.97
Replaces: 01.95
4/2- and 4/3-way shut-off valves
pilot operated type Z4WEH 16 ...
externally piloted type Z4WH 16 ...
Nominal size 16
Series 5X
Maximum operating pressure 315 bar
Maximum flow 300 L/min
Type Z4WEH 16 E..-5X/6E...N9ETK4
H/A/D 5855/97
Features
– Functions as an isolator - free-flow valve or
as an isolator - free-flow - short circuit valve
– P and T have free-flow in each switched position
– Directional spool valve, pilot operated
– Electro-hydraulic actuation (WEH),
hydraulic actuation (WH)
– Porting pattern to DIN 24 340 form A,
ISO 4401 and CETOP-RP 121 H
– Wet-pin AC or DC solenoids, optional
– Hand override, optional
– Individual electrical connections
(central connection on request)
– Switching time adjustment, optional
– Accessories:
stroke limiter on main spool,
inductive limit switch on main spool
(contact and inductive)
RE 24 761/10.97
Rexroth Hydraulics 2/10 Z4WEH; Z4WH
Operation
Electro-hydraulic = WEH
Hydraulic = WH
Nominal size 16 = 16
Symbols see page 3
Series 50 to 59 = 5X
(50 to 59: unchanged installation
and connection dimensions)
Pilot operated valve with wet-pin = 6E
1)
solenoids
WEH version without pilot valve = U
DC voltage 24 V = G24
1)
AC voltage 230 V 50/60 Hz = W230
1)
DC voltage 205 V = G205
1;5)
For other voltages and frequencies
see catalogue sheet RE 23 178
With protected hand override (standard) = N9
1)
Without hand override = No code
With hand override = N
1)
External pilot oil supply = No code
External pilot oil drain (only on WH)
Internal pilot oil supply, internal pilot oil drain
= ET
4)
(standard version)
External pilot oil supply, internal pilot oil drain
= T
Without switching time adjustment = No code
Switching time adjustment as meter-in control = S
Switching time adjustment as meter-out control = S2
Types of electrical connection
Individual connection; with component plug = K4
1;3)
DIN 43 650-AM2, without plug-in connector
Further details in clear text
No code = NBR seals
V = FPM seals
(other seals on request)
Attention!
The compatibility of the seals and
pressure fluid has to be taken into account!
No code = without pressure reduction
for the pilot valve
D3
1)
= Pressure reducing valve
used with pilot pressures > 250 bar
Throttle insert
No code = without throttle insert
B08 = throttle Ø 0.8 mm
B10 = throttle Ø 1.0 mm
Accessories
stroke limiter, see page 9
No code = without stroke limiter
10 = stroke limiter both sides
11 = stroke limiter on side A
12 = stroke limiter on side B
Accessories
QMAG24 =
QMBG24 =
QMABG24 =
QM0G24
2)
=
1)
These ordering details are only applicable for electro-
hydraulic actuation!
2)
QM0G24 not for 2-position valves
3)
Plug-in connectors have to be ordered separately (see below)
4)
For internal oil supply:
• Minimum pilot pressure: take page 5 into account!
• To avoid unpermissibly high pressure peaks,
a throttle insert (B10) should be fitted in the P port of
the pilot valve.
5)
For the connection to an AC supply line a DC solenoid must
be used which is controlled via a rectifier (see table on the
left).
For single connection a large plug-in connector with
integrated rectifier can be used (separate order, see below).
Ordering details
inductive limit switch, see page 9 and
catalogue sheet RE 24 830
a grey 00074683 – – –
b black 00074684 – – –
a/b black – 00057292 00313933 00310995
With circuitry and
Z-Diode protective circuit
24 V
With rectifier
12 … 240 V
With indicator display
12 … 240 V
Ordering details: Plug-in connector to DIN 43 650 A and ISO 4400 for component plug "K4"
Valve
side
Colour
Material no.
Futher
plug-in connectors
see RE 08 006
Without circiutry
110 V - 50/60 Hz 96 V G96
120 V - 60 Hz
230 V - 50/60 Hz 205 V G205
Z4 16 –5X
*
AC supply
(permissible
voltage tolerance
± 10%)
Nominal voltage
of the DC solenoid
when used with
an AC voltage
Ordering
details
Preferred types and standard components are
highlighted in the RPS (Rexroth Price list Standard).
Z4WEH; Z4WH 3/10 Rexroth Hydraulics
RE 24 761/10.97
ab
PX A B
1
2
YT
XY
ab
PX A B
1
2
YT
XY
PX A B
1
2
YT
XY
ab
ab
PX A B
1
2
YT
XY
ab
PX A B
1
2
YT
XY
ab
PX A B
1
2
YT
XY
ab
PX A B
1
2
YT
XY
ab
PX A B
1
2
YT
XY
a
b
PX A B
1
2
YT
XY
a
b
PX A B
1
2
YT
XY
a
b
PX A B
1
2
YT
XY
a
b
PX A B
1
2
YT
XY
Z4WEH 16 .../..T..Z4WEH 16 .../..ET..
Electro-hydraulic actuation (WEH)
Spool type
X = internal Y = internal
Z4WH 16 .../....
E51
E68
E63
E62
Hydraulic actuation (WH)
E51
E68
E63
E62
Symbols (
1
= component side,
2
= sub-plate side)
X = external Y = internal
X = external Y = external
RE 24 761/10.97
Rexroth Hydraulics 4/10 Z4WEH; Z4WH
X
Y
A2
B2
B1
A1
P
T
A
T
B
P
Z
Z
"b" "a"
X
Z–Z
1
2
G1/4
P
Pilot oil supply
external: 1 closed 2 open
internal: 1 open 2 closed
Pilot oil port "X" only possible for Z4WEH 16 ...
Type Z4WEH 16 E62-5X/6E...ET..
Section
Z4WEH; Z4WH 5/10 Rexroth Hydraulics
RE 24 761/10.97
General
Weight – Electro-hydraulic actuation:
Valve with 1 solenoid kg 14.1
Valve with 2 solenoids kg 14.4
– Direct hydraulic actuation kg 13.3
– Pressure reducing valve “D3” kg 0.4
– Switching time adjustment “S” and “S2” kg 0.8
– Plate for “X” external ..T.. kg 0.5
Installation optional
Hydraulic technical data
Maximum operating pressure
– Ports A, B bar 315
– Port P With external pilot oil supply bar 315
With internal pilot oil supply:
– without pressure reducing valve “D3” bar 250
– with pressure reducing valve “D3” bar 315
– Port T Pilot oil drain only possible internally:
– WEH DC solenoid bar 210
– WEH with AC solenoid bar 160
– WH bar 315
Min. control pressure bar 12
Max. control pressure bar 250
Max. flow L/min 300
Control volume for switching cm
3
4.9
Pressure fluid Mineral oil (HL, HLP) to DIN 51 524
1)
;
Fast bio-degradable pressure fluids to
VDMA 24 568 (also see RE 90 221); HETG (rape seed oil)
1)
;
HEPG (polyglycole)
2)
; HEES (synthetic ester)
2)
;
other fluids on request
Pressure fluid temperature range °C – 30 to + 80 (with NBR seals)
– 20 to + 80 (with FPM seals)
Viscosity range mm
2
/s 2.8 to 500
Degree of contamination Maximum permissible degree of contamination of the fluid is to
NAS 1638 class 9. We, therefore, recommend a filter with a
minimum retention rate of ß
10
≥ 75.
1)
Suitable for NBR and FPM seals
2)
Only suitable for FPM seals
Technical data (for applications outside these parameters, please consult us!)
RE 24 761/10.97
Rexroth Hydraulics 6/10 Z4WEH; Z4WH
0
50
100
150
200
250
300
0
2
4
6
8
10
12
14
16
A2-A1
B1-B2
B2-B1
A1-A2
P1-P2
T1-T2
0
50
100
150
200
250
300
0
2
4
6
8
10
12
14
16
B1-B2
B2-B1
A1-A2
A2-B2
A2-A1
P1-P2
T1-T2
0
50
100
150
200
250
300
0
2
4
6
8
10
12
14
16
B1-B2
B2-B1
A1-A2
A2-A1
P1-P2
T1-T2
0
50
100
150
200
250
300
0
2
4
6
8
10
12
14
16
B1-B2
B2-B1
A1-A2
A2-B2
A2-A1
P1-P2
T1-T2
Switching time ON (from energising pilot valve to a 5 % pressure increase in the main valve)
– At pilot pressure bar ~ 70 = ~ 140 = ~ 210 = ~ 250 =
X = internal; Y = internal; with orifice Ø 1mm (standard) ms 60 85 55 70 45 60 45 55
X = external; Y = internal ms 35 50 30 40 20 40 20 40
With pressure reducing valve (45 bar); X = internal; Y = internal
ms 110 115 55 65 60 55 55 60
X = internal; Y = internal; with orifice Ø 1mm (atandard) ms 80 105 65 85 50 80 50 80
X = external; Y = internal ms 30 80 30 80 25 75 25 75
With pressure reducing valve (45 bar); X = internal; Y = internal
ms 100 125 90 90 75 75 55 80
Switching time OFF (switching off with spring)
– At pilot pressure bar ~ 70 = ~ 140 = ~ 210 = ~ 250 =
X = internal; Y = internal; with orifice Ø 1mm (standard) ms 40 30 40 30 40 30 40 30
X = external; Y = internal ms 45 35 45 35 45 35 45 35
With pressure reducing valve (45 bar); X = internal; Y = internal
ms 40 35 40 35 40 35 40 35
X = internal; Y = internal; with orifice Ø 1mm (standard) ms 45 30 45 30 45 30 45 30
X = external; Y = internal ms 35 35 35 35 35 35 35 35
With pressure reducing valve (45 bar); X = internal; Y = internal
ms 55 35 55 35 55 35 55 35
3-position valve (spring centred)
3-position valve (spring centred)
2-position valve (spring offset)
2-position valve (spring offset)
Technical data (for applications outside these parameters, please consult us!)
Characteristic curves (measured at
ν
= 41 mm
2
/s and
ϑ
= 50 °C)
Z4WEH 16 E51–5X/...
Z4WEH 16 E62–5X/...
Z4WEH 16 E63–5X/... Z4WEH 16 E68–5X/...
∆p -q
V
Characteristic curves
Flow in L/min →
Flow in L/min →
Pressure differential in bar → Pressure differential in bar →
Pressure differential in bar →Pressure differential in bar →
Flow in L/min →
Flow in L/min →
Z4WEH; Z4WH 7/10 Rexroth Hydraulics
RE 24 761/10.97
0,01/100mm
R 4
max
62,5
162,5
B1
Y1
80,4
61,6
40
X
46,6
2,5
P1
T1
A1
X1
A2
B2
B1
A1
X
80
27
55
25
G1/4
Pg 11
B
T
P
A
15
85,5
215
9
6
13
7
8
53131 7
4
18 12
17
14.114.2
B
82 (80)
96 (97)
7,9
A
10
11
For explanation of
numbering, see page 8
Unit dimensions: type Z4WEH… (Dimensions in mm)
Required surface finish of mating piece
RE 24 761/10.97
Rexroth Hydraulics 8/10 Z4WEH; Z4WH
Unit dimensions: type Z4WH… (Dimensions in mm)
30
Y
X
Ø 25
G 1/4
40
23
62,5
162,5
A2
B2
B1
A1
80
6
15
B
A
16
6
7 13 3
1
18 12
0,01/100mm
R 4
max
14.1 Valve fixing screws
4 off M10 x ..
1)
to DIN 912-10.9
tightening torque M
A
= 75 Nm,
must be ordered separately
14.2 Valve fixing screws
2 off M6 x ..
1)
nach DIN 912-10.9
tightening torque M
A
= 15.5 Nm,
must be ordered separately.
15 Space required to remove plug-in
connector
16 Pilot oil connecting plate
17 Holes for locating pins
18 Locating pins
1)
Length as required
2)
dimension () for valves with AC solenoids
Material no. – seal kit:
• NBR seals: 00313147
• FPM seals: 00860124
1 Name plate for overall valve
2 Name plate for pilot valve
3 Main valve with porting pattern
on both sides to DIN 24 340 form A,
ISO 4401 and CETOP-RP 121 H
4 Port X (G1/4)
for external pilot control
5 Pressure reducing valve “D3”
The "D3" pressure reducing valve must
be fitted with pilot pressures over 250
bar. (only possible for version
Z4WEH….)
Material no.:
• NBR seals: 00323180
• FPM seals: 00323664
Attention!
When using the "D3" pressure
reducing valve a "B10"cartridge
throttle must be fitted into the P port of
the pilot valve !
6 Switching time adjustment
(uble throttle/check valve to RE 27 506)
dependent on mounting position giving
meter-in or meter-out control
(Illustration: meter-in control)
7 R-ring plate
8 Pilot valve to RE 23 178
Type 4WE6 J.. for symbol E62
Type 4WE6 Y.. for symbol E51; E63;
E68
9 Solenoids “a” and “b” can be rotated
through 90°
10
Dim. for valve with hand override „N“
2)
11 Dim. for valve with protected hand
override „N9“
2)
12 R-ring 22.53 x 2.3 x 2.62
(A2, B2, P2, T2)
13 R-ring 9.81 x 1.5 x 1.78 (A, B, P, T)
Required surface finish of mating piece
Z4WEH; Z4WH 9/10 Rexroth Hydraulics
RE 24 761/10.97
+ 24 V
PNP
0 V
3
2
1
4
S(Ö) Ö(S)
B1
Y1
P1
T1
A1
X1
L2
L1
19 20
B1
Y1
P1
T1
A1
X1
L2L1
Material no. – seal kit:
00314428
The inductive limit switch can be
wired either N.O. or N.C.
(see RE 24 830).
Monitored position Ordering L1 L2
details
Switched position “a” monitored QMAG24 261
(limit switch on side B)
Switched position “b” monitored QMBG24 161
(limit switch on side A)
Switched positions “a” and “b” QMABG24 161 261
monitored
(limit switch on sides A and B)
Switched 0-position monitored QM0G24 161 261
(limit switch on sides A and B
only possible for “E62”)
The electrical connection is via a 4-pin plug-in connector with a
connection thread of M12 x 1.
The plug-in connector has to be ordered separately
(see RE 24 830).
For further details regarding
• Operating voltage,
• Power consumption,
• Output loads,
• Contact allocation,
see RE 24 830.
Load up to
400 mA
Attention!
It has to be ensured that terminal 1 of the
plug-in connector is connected!
Accessories: stroke limiter (Dimensions in mm)
Possible combinations Ordering L1 L2
details
Stroke limiter on 10 108 208
sides A and B
Stroke limiter on 11 108
side A
Stroke limiter on 12 208
side B
Stroke 10 mm
(1 turn = 1.5 mm stroke)
Stroke limiter restricts the main spool stroke.
Releasing the locknut (19) and turning the adjusting screw (20)
clockwise limits the spool stroke.
When making an adjustment the control chamber must be at zero
pressure.
19 Locknut, 24 A/F
20 Adjusting screw, 6 A/F
Accessories: inductive limit switch (Dimensions in mm)
NO
(NC)
NC
(NO)
All rights reserved – Subject to revision 10/10 Z4WEH; Z4WH
RE 24 761/10.97
Mannesmann Rexroth AG
Rexroth Hydraulics
D-97813 Lohr am Main
Jahnstraße 3-5 • D-97816 Lohr am Main
Telefon 0 93 52 / 18-0
Telefax 0 93 52 / 18-10 40 • Telex 6 89 418-0
The specified data is for product description
purposes only and may not be deemed to be
guaranteed unless expressly confirmed in the
contract.
Mannesmann Rexroth Limited
Cromwell Road, St. Neots,
Huntingdon, Cambs. PE19 2ES
Tel: (01480) 476041
Fax: (01480) 219052
Notes
