شرکت نفت شل، (به انگلیسی: Shell Oil Company) شرکت نفت و گاز آمریکایی و شعبه کمپانی رویال داچ شل در ایالات متحده آمریکا میباشد.این شرکت در زمینه استخراج نفت و گاز طبیعی، بازاریابی فرآوردههای نفتی، همچنین تولید محصولات پتروشیمی فعالیت میکند.شرکت نفت شل، با در اختیار داشتن بیش از ۲۵٫۰۰۰ جایگاه پمپ بنزین در ایالات متحده، مالک بزرگترین شبکه عرضه سوخت در این کشور میباشد. شمار کارکنان این شرکت حدود ۲۲٬۰۰۰ نفر است و دفتر مرکزی آن در هیوستون، تگزاس قرار دارد.
Shell Omala Oil
Premium quality industrial gear oils
Shell Omala Oils are premium quality, lead-free, extreme-pressure oils designed, primarily, for the lubrication of heavy duty industrial gears. Their high load carrying capacity and anti-friction characteristics combine to offer superior performance in gears and other industrial applications.
They are formulated using high viscosity index, solvent refined, base oils and incorporate a special sulphur-phosphorus additive to provide an extreme pressure performance significantly better than that provided by leaded gear oils.
Steel gear transmissions
Industrial gear drives where a full EP performance is required
Circulating and splash lubricated systems
Shell Omala Oils should not be used for automotive hypoid gears. The appropriate Shell Spirax Oil should be used for this purpose.
Excellent load carrying and anti-friction characteristics
Reduces gear tooth and bearing wear on both steel and bronze components
Outstanding oxidation and thermal stability
Withstands high thermal loading and resists the formation of sludge and other harmful products of oxidation. Extended oil life, even with bulk oil temperatures up to 100°C in certain applications
Effective corrosion inhibition
Protects both steel and bronze components, even in the presence of contamination by water and solids
Operator acceptability. Reduced health risk
Wide range of viscosities
Caters for the most varied and arduous industrial applications
Water shedding properties
Shell Omala Oils have excellent water separation properties. Excess water can be drained easily from lubrication systems. (Water can greatly accelerate surface fatigue on gears and bearings as well as promoting ferrous corrosion on internal surfaces. Water contamination should be avoided or removed as quickly as possible after the occurrence).
Load Carrying Capacity
The load carrying capacity of Shell Omala Oils, as determined in laboratory tests, is significantly better than that of leaded gear oils. Gear tooth wear is reduced, particularly under conditions of high load. Typical test results for Shell Omala Oil 220 are:
Extreme Pressure Properties
Timken Wear & Lubricant Testing Machine
OK Load lbs
Four Ball Extreme Pressure Test
Initial seizure load kg
Load Carrying Capacity
FZG Gear Machine
A/8.3/90 } Failure load
A/16.6/90 } stage
The capacity of heaters, used to raise bulk oil temperatures, should not exceed 11.5 KJ/m2 (۷٫۵ W/in2).
The following procedures and precautions are recommended when changing oils – including leaded grades:-
As a general principle, oil that has been in use for some time should be renewed completely. For complete benefit, Shell Omala Oils should be not be mixed with other oils.
Drain the gearbox completely and inspect internally. Remove any sludge deposits manually. Flush the gearbox with new oil. Drain and refill with the appropriate viscosity Shell Omala Oil.
Drain off the old oil. The minimum amount of Shell Omala Oil necessary to maintain circulation should be pumped around the system, for as long as practicable, to flush out all pipework and inaccessible points. Use warm oil, if possible. Discard the flushing charge and, provided a careful inspection shows the lubrication system, including filters, drains and sumps to be free of contamination, refill with the appropriate viscosity Shell Omala Oil. If the examination is not satisfactory, repeat the procedure.
For newer charges of leaded gear oil, an inspection as detailed should be carried out. If the system is found to be reasonably clean, top-up the existing oil with Shell Omala Oil may be carried out observing the following safeguards:
Make top up by adding frequent small quantities, rather than occasional large charges.
Inspect the system regularly for an initial period of three months, particularly with regard to the cleanliness of filters. The inspection frequency may be extended gradually to normal manufacturers’ recommended periods as long as conditions are satisfactory
Health & Safety
Shell Omala Oils are unlikely to present any significant health or safety hazard when properly used in the recommended application, and good standards of industrial and personal hygiene are maintained.
Avoid contact with skin. After skin contact, wash immediately with soap and water.
For further guidance on Product Health & Safety refer to the appropriate Shell Product Safety Data Sheet.
Protect the environment
Take used oil to an authorised collection point. Do not discharge into drains, soil or water.
Advice on applications not covered in this leaflet may be obtained from your Shell Representative.
Typical Physical Characteristics
These characteristics are typical of current production. Whilst future production will conform to Shell’s specification variations in these characteristics may occur.
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