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Origin |
Korea |
[Introduction]
What is the Hydraulic oil ?
- Hydraulic oil is a suitable solution for hydraulic equipment and used for tool machines, press machines, aircraft, construction equipment, automobiles, and so on. Hydraulic oil plays important role throughout industry.
It functions in power transmission, parts lubrication, prevention of rust and corrosion in hydraulic system, and the extension of machine and tool life by cooling the system.
The important qualities for hydraulic oil.
- Suitable viscosity.
- Low pour point, so working is possible even in low temperature.
- High viscosity index minimizes viscosity change according to operational temperature.
- Excellent non-wear of operational parts.
- Excellent anti-foaming agency to prevents cavitation in operation.
- Excellent demulsification ability to make possible to separate water and oil.
- Excellent prevention of rust and corrosion.
[The controls of hydraulic oil]
Kinematic viscosity
- Under normal conditions, the viscosity change should not be large; the control standard is ± 10%. If viscosity change is over the figure, it is considered mixture of other oil and oxidation and an oil refill might be necessary.
Moisture
- The ordinary control standard of moisture is less than 1000ppm.
(Exception: F/E system -2000ppm, W/G system- 40±5% )
If moisture is around the control standard, it is necessary to drain and refill the oil
Total acid value
- If acid value is 0.5mg KOH/g over the original oil when the total acid value is measured, It is oxidated and it may be necessary to have an oil refill.
[Sort of Hydraulic oil(ISO)]
[Fire resistant Hydraulic fluids]
HYDRO WG-Series (ISO L-HFC)
- (Water-Glycol Fire-resistant Hydraulic Fluid)
- HYDRO WG-SERIES is a Water-Glycol Fire-resistant Hydraulic Fluid containing a glycol, a high molecular weight poly glycol and the additives.
HYDRO WG-SERIES was developed to extend the life-time of fluid itself.
Because it is resistant to oxidation and thermal degradation and to the formation of sludge and gum.
Product list
Model |
WG-38 |
WG-46 |
WG-51 |
WG-56 |
WG-68 |
Specific
Gravity
(15/4°C) |
1.08 |
1.08 |
1.08 |
1.08 |
1.08 |
Viscosity
(40°C,cSt) |
38.0 |
46.0 |
51.0 |
56.0 |
68.0 |
Viscosity Index |
220 |
226 |
230 |
234 |
235 |
Pour point (°C) |
-30 Max. |
-30 Max. |
-30 Max. |
-30 Max. |
-30 Max. |
pH(100%) |
9.8 |
9.8 |
9.7 |
9.7 |
9.7 |
Color |
Red |
Red |
Red |
Red |
Red |
[Special Feature (HYDRO WG-SERIES)]
- FIRE-RESISTANCE
- HYDRO WG-SERIES is not only totally uncombustible but also do not ignite respectively burn in most cases, where a conventional mineral-based hydraulic oil will do.
- VISCOSITY PROPERTIES
- High V.I (Viscosity Index) and Low P.P (Pour Point) enable this hydraulic fluid to accommodate wide temperature fluctuations.
- ANTI WEAR PROPERTIES
- Excellent Lubricity enable to applicate for severe condition(140∼210 kg.f/cm2), and this fluid has proven it's outstanding anti-wear properties in practical application in all kinds of equipment which was designed for the application of water-glycol fluid respectively mineral fluid.
- CORROSION PROTECTION
- HYDRO WG-SERIES contains vapor-phase corrosion inhibitors and gives sufficient protection.
[Application (HYDRO WG-SERIES)]
- Iron, steel industry
- Blast furnace, Casting machine, Coke oven, Electric furnace Glass manufacturing, oven, Slag transport
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