Description
Castrol Aircol SR 46 – High-Quality Synthetic PAO Rotary Air Compressor Oil
Description: Castrol Aircol SR 46 is a high-quality synthetic PAO (polyalphaolefin) air compressor oil specifically designed for rotary screw air compressors.
Application: Aircol SR is suitable for oil-flooded rotary screw air compressors operating under severe weather, environmental, and operating conditions with very high compressed air temperatures (above 100°C). This product is also suitable for air compressors operating under normal conditions with maximum air discharge temperatures below 100°C as defined by ISO 6743-3:2003. Under these conditions, Aircol SR can be used with oil change intervals of up to 8,000 hours. Aircol SR is fully compatible with nitrile, silicone, polyurethane, and fluropolymer seal materials commonly used in air compressors, but not compatible with styrene-butadiene rubber (SBR) and ethylene-propylene (EPDM) seal materials.
Classification and Standards:
- DIN 51506 VD-L
- ISO 6743/3 – DAG, DAH, and DAJ for rotary air compressors
- Meets the requirements of compressor manufacturers: Atlas Copco (with an 8,000-hour oil change interval) and Kaeser.
Benefits:
- Extends oil service life up to 8,000 hours in most air compressors, depending on operating conditions.
- Very low deposit-forming tendencies, extending the life of oil filters and oil separators.
- Superior oxidation stability and wear protection, extending the life of both the oil and the air compressor.
- Ester-free formulation prevents the formation of corrosive acids, prolonging the life of the air compressor.
- Excellent water separation properties quickly separate condensate from the oil, reducing the risk of oil emulsification that could clog the oil separator.
- PAO base oils ensure good compatibility with seal materials and mineral oils, allowing for an easy transition from mineral oils to Aircol SR.
Typical Characteristics:
| Property | Method | Unit | Aircol SR 32 | Aircol SR 46 | Aircol SR 68 |
|---|---|---|---|---|---|
| Specific Gravity at 15°C | ASTM D4052 | g/ml | 0.83 | 0.84 | 0.84 |
| Viscosity at 40°C | ASTM D445 | mm²/s | 32 | 46 | 68 |
| Viscosity at 100°C | ASTM D445 | mm²/s | 6.1 | 7.8 | 10.7 |
| Viscosity Index | ASTM D2270 | 137 | 137 | 142 | |
| Foam Sequence I | ASTM D892 | ml/ml | 10/0 | 10/0 | 10/0 |
| Pour Point | ASTM D97 | °C | -54 | -54 | -54 |
| Closed Flash Point | ASTM D93 | °C | 227 | 235 | 264 |
| Rust Test (24 hours, synthetic seawater) | ASTM D665B | Pass | Pass | Pass | |
| RPVOT Oxidation Test | ASTM D2272 | minutes | 4500 | 3000 | 3000 |
| FZG Load Stage (A8.3/90) | DIN 51354 | 8 | 9 | 9 | |
| 4-Ball Wear Test | ASTM D2783 | mm | 0.4 | 0.4 | 0.4 |
