Bosch Rexroth M SED 6 VE1 Series, Manual

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6 /16 Bosch Rexroth AG Hydraulics M-.SED 6...VE1... RA 22049-VE1-B1
Throttle insert
The use of a throttle insert is required when due to prevail-
ing operating conditions, flows can occur during the switching
processes, which exceed the performance limit of the valve.
Examples:
– Accumulator operation;
– Use as pilot control valve with internal pilot fluid tapping.
3/2 directional seat valve (see page 4)
The throttle insert is inserted into
port P of the seat valve.
4/2 directional seat valve (see page 5)
The throttle insert is inserted into
port P of the Plus-1 plate.
Check valve insert
The check valve insert allows free flow from P → A and clos-
es A → P in a leak-free way.
3/2 directional seat valve (see page 4)
The check valve insert is inserted into port P of the
seat valve.
4/2 directional seat valve (see page 5)
The check valve insert is inserted in
port P of the Plus-1 plate.
P
P
Function, section: Throttle insert, check valve insert
Technical data
general
Installation position Any
Ambient temperature range °C –20 … +60
Storage temperature range °C +15 … +30
Admissible vibration load 20 … 2000 Hz amplitude 0.05 g 2 /Hz (10 g RMS)
Weight 3/2 directional seat valve kg 3.1
4/2 directional seat valve kg 3.9
Surface protection Galvanic coating
hydraulics
Maximum operating pressure bar See table on page 10
Maximum flow l/min 25
Hydraulic fluid Mineral oil (HL, HLP) according to DIN 51524
1)
; Rapidly
biodegradable hydraulic fluids according to VDMA 24568
(see also RE 90221); HETG (rape seed oil)
1)
; HEPG (poly-
glycols) 2) ; HEES (synthetic esters) 2) ;
Other hydraulic fluids upon request
Ignition temperature > 180 °C
Hydraulic fluid temperature range °C –20 ... +80 (for NBR seals)
–15 ... +80 (for FKM seals)
Viscosity range mm
2
/s 2.8 … 500
Maximum permitted degree of contamination of the hydraulic
fluid cleanliness class according to ISO 4406 (c)
Class 20/18/15
3)
1)
Suitable for NBR and FKM seals
2)
Suitable only for FKM seals
3) The cleanliness classes specified for the components must
be adhered to in hydraulic systems. Effective filtration
prevents faults and at the same time increases the life
cycle of the components. For the selection of the filters see
www.boschrexroth.com/filter.