3
Parameters
3.1 General and hydraulic
Description
Pressure switch
Design
Spring-loaded piston-type pressure switch
Model
Pipe connection, manifold mounting
Material
DG 1: Galvanised steel housing
DG 3: Zinc die casting housing
Tightening torques
See
Installation position
DG 1 R.. = Vertical, sideways scale, hydraulic part at the bottom
DG 3..
= As desired
Hydraulic fluid
Hydraulic oil: according to part 1 to 3;
ISO VG 10 to 68 according to DIN ISO 3448
Viscosity limits: min. approx. 4, max. approx. 1500 mm
2
/s
opt. operation approx. 10... 500 mm
2
/s.
Also suitable for biologically degradable hydraulic fluids type HEPG (polyalkylene glycol)
and HEES (synthetic ester) at operating temperatures up to approx. +70°C.
Cleanliness level
ISO 4406
21/18/15...19/17/13
Temperatures
Ambient: approx. -40 ... +80°C, Fluid: -25 ... +80°C, Note the viscosity range!
Start temperature: down to -40°C is permissible (observe start viscosities!),
as long as the steady-state temperature is at least 20K higher during subsequent operation.
Biologically degradable pressure fluids: Observe manufacturer's specifications. By considera-
tion of the compatibility with seal material not over +70°C.
Hydraulic data of DG 35 -X.-KB and
DG 364 -X.-KB
Temperature range
-30°C < x < 0°C
0°C < x < 50°C
Speed of pressure change
< 6 bar/s
DG 35
80 ... 250 bar
20 ... 250 bar
Pressure setting p
min
to p
max
DG 364
35 ... 50 bar
12 ... 50 bar
DG 35
Maximum pressure p
max
DG 364
500 bar
500 bar
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D 5440 - 10-2020-1.1
©
HAWE Hydraulik SE
