OLGAS-H
– High pressure spring return hydraulic actuator
Use and maintenance manual
© Copyright by BIFFI Italia. All right reserved.
Pag. 41
Contents may change without notice
5.3
LUBRICATION OF MECHANISM
For normal duty the scotch yoke mechanism of the actuator is
lubricated "for life". In case of high load and high frequency of
operation it may be necessary to periodically restore lubrication: it is
advisable to apply a generous coating of grease on the contact
surfaces of the yoke and bushings, on the yoke link grooves, on the
sliding blocks, on the guide bar.
For this operation it is necessary to disassemble the mechanism
cover. In larger actuators the lubrication can be performed through
the inspection holes of the cover after removing the plugs.
It’s necessary restore the grease into spring-cartridge (for this
operation remove the plug on end-flange of spring-cartridge and
restore a generous coating of grease)
The following grease is used by BIFFI for standard working
temperature and suggested for re-lubrication:
AGIP MU/EP/2
AEROSHELL GREASE 7 or
equivalent
To be used in standard temperature
conditions (-30°C/+85°C)
NLGI consistency: 2
Worked penetration: 280 dmm
ASTM Dropping Point: 185°C
Base oil viscosity at 40°C: 160 mm²/s
ISO Classification: L-X-BCHB 2
DIN 51 825: KP2K
–
20
Equivalent to: ESSO BEACON EP2
BP GREASE LTX2
SHELL ALVANIA GREASE R2
ARAL ARALUB HL2
CHEVRON DURALITH GREASE EP2
CHEVRON SPHEEROL AP2
TEXACO MULTIFAK EP2
MOBILPLEX 47
PETROMIN GREASE EP2
To be used in low temperature
conditions
(-60°C/+65°C)
Colour: Buff
Physical state: Semi-solid at
ambient temperature
Odour : Slight
Density : 966 Kg/m³ at 15°C
Flash Point : ›215°C (COC)(Based
on synthetic oil)
Dropping point : 260°C (ASTM D-
566)
Product code : 001A0065
Infosafe No.: ACISO GB/eng/C
