Technical Data - Bosch Rexroth Z4WE Serie Manual De Instrucciones

8/12 Bosch Rexroth AG
Technical data (for applications outside these parameters, please consult us!)
General
Weight – Valve with 1 solenoid
– Valve with 2 solenoids
– Valve with hydraulic actuation
(type 4WH...)
– Switching time adjustment
– Pressure reducing valve
– Plate for version "T"
Installation position
Ambient temperature range
Hydraulic
Maximum oper- – Ports A and B
ating pressure
– Port P
External pilot oil supply
Internal pilot oil supply
– Port T
(Pilot oil drain only internal)
Minimum pilot pressure
Maximum flow
Pilot volume for operation
Hydraulic fluid 1)
Hydraulic fluid temperature range
Viscosity range
Permissible max. degree of contamination of the
hydraulic fluid - cleanliness class to ISO 4406 (c)
Electrical
Switching time to at pilot pressure
ISO 6403
– ON
– OFF
1) The ignition temperature of the process and operating
medium used must be higher than the maximum solenoid
surface temperature.
2) Suitable for NBR and FKM seals
3) Suitable only for FKM seals
4) The cleanliness classes specified for components must be
adhered to in hydraulic systems. Effective filtration prevents
malfunction and, at the same time, prolongs the service life
of components.
For the selection of filters, see data sheets RE 50070,
RE 50076, RE 50081, RE 50086, RE 50087 and RE 50088.
Hydraulics
kg 4.2
kg 4.6
kg 3.5
kg 0.8
kg 0.4
kg 0.5
°C –30 to +50 (NBR seals)
bar 315
bar 315
bar 250 (without pressure reducing valve)
bar 210 (with DC solenoid)
bar 12
l/min 160
cm
3
°C –30 to +80 (NBR seals)
mm 2 /s 2.8 to 500
bar
ms
ms 30
Z4WEH; Z4WH
Optional
–20 to +50 (FKM seals)
315 (with pressure reducing valve)
160 (with AC solenoid)
1.3
Mineral oil (HL, HLP) to DIN 51524
hydraulic fluids to VDMA 24568 (see also RE 90221); HETG
(rape seed oil) 2) ; HEPG (polyglycols)
esters) 3) ; other hydraulic fluids on request
–20 to +80 (FKM seals)
Class 20/18/15 4)
70
~ = ~
30 65 25
Notes!
– The manual override can only be actuated up to a tank
pressure of ca. 50 bar. Avoid damage to the bore for the
manual override! (Special tool for operation, separate or-
der, Material no. R900024943). When the manual override
is blocked, operation of the solenoids must be ruled out!
– The simultaneous operation of the solenoids must be ruled
out!
RE 24753/08.08
2) ; fast bio-degradable
3) ; HEES (synthetic
140 210
= ~ =
60 20 55