Description
Castrol Alpha SP 68 – Premium Industrial Gear Oil
Product Overview
The Castrol Alpha™ SP series is a high-quality range of industrial gear oils formulated from refined mineral base oils and fortified with advanced extreme pressure (EP) additive technology. This formulation delivers exceptional thermal stability and superior load-carrying capabilities. The EP additives not only provide excellent load-bearing performance but also offer micro-pitting protection—known as anti-scuffing—safeguarding gears against micro-level wear and tear. This critical feature helps prevent micro-scale damage, prolonging gear life and meeting the demands of compact gearboxes operating under high torque.
Applications
- Industrial Gearboxes: Ideal for lubricating industrial gearboxes utilizing forced circulation, splash lubrication, or oil bath systems.
- Helical and Spur Gears: Suitable for straight and helical spur gear systems, as well as select light-duty worm gear applications.
- Low-Temperature Performance: Excellent viscosity characteristics ensure that starting torque remains manageable in low ambient temperatures.
- Material Compatibility: Compatible with both ferrous and non-ferrous metals commonly used in industrial gear units. Fully compatible with standard seal materials to prevent leakage.
Compliance with International Standards:
Depending on the viscosity grade, Castrol Alpha SP meets or exceeds the following specifications:
- DIN 51517
- AGMA 9005 – E02
- AIST 224
- David Brown S1.53.101 Type E
- Flender Revision 16 for helical, bevel, and planetary gear units (ISO VG 150 – 460)
Classified as DIN CLP gear oils.
Key Benefits
- Outstanding Extreme Pressure Protection: Shields gears from wear under maximum load and shock conditions. Proven performance in FZG Gear Tests and validated in extensive real-world applications.
- ‘Clean Gear’ Additive Technology: Minimizes sludge and deposit formation, keeping gear systems clean and operationally efficient.
- Excellent Water Separability and Demulsibility: Ensures stable lubrication even in the presence of water contamination, protecting against rust and corrosion.
- Superior Rust and Oxidation Resistance: Provides robust protection, extending equipment life and reducing downtime.
- Seal Compatibility: Fully compatible with commonly used sealing materials, preventing leaks and reducing maintenance costs.
Typical Characteristics
| Property | Test Method | Unit | SP 46 | SP 68 | SP 100 | SP 150 | SP 220 | SP 320 | SP 460 | SP 680 | SP 1000 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AGMA Grade | — | — | — | 2EP | 3EP | 4EP | 5EP | 6EP | 7EP | 8EP | — |
| ISO Viscosity Grade | — | — | 46 | 68 | 100 | 150 | 220 | 320 | 460 | 680 | 1000 |
| Density @ 15°C | ISO 12185 / ASTM D4052 | kg/m³ | 880 | 880 | 880 | 890 | 890 | 900 | 900 | 920 | 930 |
| Kinematic Viscosity @ 40°C | ISO 3104 / ASTM D445 | mm²/s | 46 | 68 | 100 | 150 | 220 | 320 | 460 | 680 | 1000 |
| Kinematic Viscosity @ 100°C | ISO 3104 / ASTM D445 | mm²/s | 6.8 | 8.8 | 11.2 | 14.5 | 18.7 | 24.0 | 30.5 | 37.3 | 43.6 |
| Viscosity Index | ISO 2909 / ASTM D2270 | — | >95 | >95 | >95 | >95 | >95 | >95 | >95 | >95 | >95 |
| Pour Point | ISO 3016 / ASTM D97 | °C | -24 | -24 | -24 | -21 | -15 | -9 | -9 | -6 | -6 |
| Flash Point (Open Cup) | ISO 2592 / ASTM D92 | °C | 215 | 215 | 219 | 223 | 225 | 226 | 229 | 229 | 229 |
| Foam Sequence I (Tendency/Stability) | ISO 6247 / ASTM D892 | ml/ml | 10/0 | 10/0 | 10/0 | 10/0 | 10/0 | 10/0 | 10/0 | 10/0 | 10/0 |
| Copper Corrosion (3 hrs @ 100°C) | ISO 2160 / ASTM D130 | Rating | 1b | 1b | 1b | 1b | 1b | 1b | 1b | 1b | 1b |
| Rust Test (24 hrs in Synthetic Seawater) | ISO 7120 / ASTM D665B | Rating | Pass | Pass | Pass | Pass | Pass | Pass | Pass | Pass | Pass |
| FZG Load Stage (A/8.3/90) | ISO 14635-1 | Failure Stage | — | >14 | >14 | >14 | >14 | >14 | >14 | — | — |
| FZG Micropitting Test (90°C) | FVA 54-7 | Endurance/Rating | — | — | >10/High | >10/High | >10/High | >10/High | >10/High | — | — |
| Brugger Test | DIN 51347 | N/mm² | >55 | >55 | >55 | >55 | >55 | >55 | — | — | — |
