OLGAS-H
– High pressure spring return hydraulic actuator
Use and maintenance manual
© Copyright by BIFFI Italia. All right reserved.
Pag. 35
Contents may change without notice
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Operate
the distributor lever to “Remote” position
For refill use oil of the same brand as the one in the actuator .
t
The cleanliness level for actuator without control-system is
NAS 8 minimum. For actuators with control system the
cleanliness level is that required by singles components, in any
case Biffi Italia S.r.L respect the customer requirements to
scope of supply, for applicable cleanliness level, refer to
document: technical data-sheet for actuators
Table 2:
features of hydraulic oil suggested by BIFFI Italia S.r.l for refilling
in different working condition:
Standard temperature conditions (-30°C/+85°):
Producer
AGIP
Name
ARNICA 22
Viscosity at 40° C
20.9 mm²/s
Viscosity at 100° C
4.73 mm²/s
Viscosity index ASTM
153
Flash point
192° C
Pour point
-42° C
Specific weight (at 15°C)
0,857 Kg/l
Equivalent oils:
SHELL TELLUS PLUS 22
CHEVRON HYDRAULIC OIL AW ISO 22
MOBIL DTE22
EXXON UNIVIS N22
EQUIVIS ZS22
BP ENERGOL HLP-HM22
CASTROL DYSPIN AWS22
Low temperature conditions (until -46°C):
Manufactured
SHELL
Name
AEROSHELL
FLUID 41
Viscosity at -54° C
2300 cST
Viscosity at -40° C
491 cST
Viscosity at 40° C
14,1 cST
Viscosity at 100° C
5,30 cST
Viscosity index (ISO 2909)
>200
Flash point
105° C
Pour point
<-60° C
Specific weight
0,87 Kg/dm3
(or equivalent)
Low temperature conditions (until -60°C):
Manufactured
SYNTESIS
Name
SYNTRASS-CS
500
Viscosity at -60° C
580 cST
