SPEC OIL STEAM CYLINDER OIL 150, 220, 460 & 680
DESCRIPTION
These oils are quality refined high
viscosity mineral oils with a small percentage of fatty oils. They are used
primarily, for the lubrication of steam cylinders working under high
temperature, high pressure conditions where low carbon formation and ‘steam
washing’ are important considerations. They atomise more easily and with steam
of moderate superheat, produce more tenacious lubricating films than ‘straight’
grades of the same viscosity.
APPLICATION
- Steam cylinder lubrication
- Low speed enclosed gears
- Certain worm gears
PERFORMANCE
FEATURES
- Good thermal resistance and oxidation stability
- Tenacious lubrication and corrosion protection even when subjected to heavy steam washing conditions.
- Good load carrying capabilities.
- Reduce wear under boundary conditions.
STEAM
CYLINDER LUBRICATION
The function of a steam-cylinder lubricant is to form
an oil film that will adequately lubricate the rubbing surfaces at high
operating temperatures and also prevent leakage past valves, pistons and
glands. Efficient atomisation, easy spreading over the working surfaces and the
ability to resist scouring action of the steam (the washing effect of water)
are other important properties.
Steam-cylinder oils are classified according to steam
temperature and engine power. The higher the steam temperature and the more
powerful the engine, the greater will be the required heat stability which is
generally related to viscosity.
LOW SPEED
ENCLOSED GEARS
These oils may be used to advantage
in worm gears prone to suffer extensive wear and to reduce the bulk oil
temperature. Typical stop-start conditions.
KEY PROPERTIES
Viscosity Grade
|
150
|
220
|
460
|
680
|
Viscosity @ 40 ◦C
Viscosity @ 100 ◦C
Viscosity Index
Density @ 15 ◦C
Flash Point ◦C (Min)
Pour Point ◦C (Max)
|
150
15
95
0.889
227
-16
|
220
19
90
0.9
210
-12
|
460
31.5
99
0.903
270
-6
|
680
35.3
83
0.929
332
-6
|
.
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