Shell Corena S4 R 68
The top in synthetic screw compressor oil
Benefits of Shell Corena S4 R 68 are:
- + 1.5x longer oil life than Corena S3 R
- + No deposits at high operating temperatures
- + Excellent water-separating power
- + Best anti-wear properties improve the life of the compressor
- + Excellent air separation and minimum foaming
Shell Corena S4 R 68 is a synthetic lubricating oil specially developed for lubrication of oil-injected rotary screw compressors for air with one or two stages.
Shell Corena S4 R 68 applications are:
The excellent properties of Shell Corena S4 R 68 are especially effective in the heaviest loaded compressors that operate at a pressure of 25 bar or a compression temperature of 100 C. Shell Corena S4 R 68 can also be used for bearing lubrication at high temperatures, such as in turbochargers.
Rotary sliding vane and screw air compressors
Shell Corena S4 R 68 is suitable for oil-immersed /oil-based oiled or two-stage palettes or screw air compresses
Heavy operating conditions
Can also be used where the ambient temperature is exceptionally high or humid.
Oil for bearing and circulation system
Excellent for lubrication of systems requiring a synthetic bearing and circulation oil of the type "R & O" (ISO VG 32-68) and benefits from increased resistance to deposit build-up, improved fluidity at low temperature and lower operating temperatures.
Shell Corena S4 R 68 Performance, Features & Advantages:
- + Extended life and savings on maintenance
- + Exceptional protection against wear
- + Preservation of system efficiency
Explanation Performance, Features & Benefits Shell Corena S4 R 68
+ Extended service life and maintenance savings
Shell Corena S4 R 68 can offer oil change intervals up to 10,000 hours (if allowed by manufacturers) even at maximum discharge temperatures above 100C. This can be extended to 12,000 hours under certain conditions. The advanced formulation of Shell Corena S4 R 68 achieves exceptional oil life thanks to:
- Exceptional resistance to chemical and thermal degradation.
- Resist the formation of deposits on rotating components in screw compressors for continuous efficient operation.
- Exceptional resistance to a build-up of deposits which helps to maintain a very high cleanliness of internal surfaces, especially in oil /air separator and coalescence filter systems.
The maintenance interval depends on the quality of the let-in air, operating and environmental conditions. For hot and humid climates as they occur in the regions Asia & the Pacific, a shorter oil change period of 10,000 hours is recommended
+ Exceptional protection against wear
Shell Corena S4 R 68 provides excellent protection for internal metal surfaces against corrosion and wear. It includes an advanced shaftless anti-wear system that extends the life of critical parts such as bearings and gears.
+ Preservation of system efficiency
Shell Corena S4 R 68 provides fast air separation without excessive foaming for efficient operation, even under severe operating conditions, for a reliable start and continuous operation. to ensure the availability of compressed air. Shell Corena S4 R 68 also has low volatility, leading to lower evaporation and oil transfer in the compressor, reducing oil refills less frequently, combined with increased air quality. Shell Corena S4 R 68 also ensures an excellent water-separating ability to ensure continuous efficient compressor operation, even in the presence of water.
+ Miscibility
Shell Corena S4 R 68 oils are fully miscible with mineral oils, but mixing with these lubricants will significantly reduce performance. Shell Corena S4 R 68 should not be mixed with certain other types of synthetic fluids.
+ Compatibility with seals
Shell Corena S4 R 68 Oils are compatible with specified elastomers for use with mineral oils.
Specifications, Approvals & Recommendations Shell Corena S4 R 68
ISO 6743-3: 2003 (E) L-DAJ Shell Corena S4 R 68 is approved by ABB for use in VTR turbochargers, with a maximum oil change interval of 5,000 hours.
Analysis figures and physical properties Shell Corena S4 R 68
Properties Method Shell Corena S4 R 68 ISO Viscosity Class - - ISO 3448 68 Kinematic viscosity @40°C mm2/s ASTM D445 68 Kinematic viscosity @100°C mm2/s ASTM D445 10.2 Viscosity index (VI) - - DIN ISO 2909 135 Density @15°C kg/m3 ASTM D1298 848 Flash point (COC) °C ASTM D92 248 Air separation minutes - - ASTM D3427 4 RPVOT minutes minimum - - ASTM D2272 2100 FZG Test LS Fail - - CEC-L-07-A-95 12 Pour Point - °C ASTM D97 -48 Water separation @54°C minutes ASTM D1401 10
