Description
Castrol Alpha BMB 680 is a high-performance gear oil (CLPF, ISO VG 680) containing solid lubricant additive (Molybdenum
Disulphide). They fulfill the requirements of the DIN 51517-3 specification and qualify as ‘CLPF type’ gear oils in accordance with DIN 51502 requirements.
- Pack size: 208 l drum
- Also available in: 20l canister
Application
- The Alpha BMB series are designed for use in low-speed heavy drives and in applciations where shocks laods can occur.
- The Alpha BMB series of gear oils are compatible with non-ferrous metals and commonly used seal materials.
- They also deliver a high thermal loading capacity, good ageing stability and excellent protection against corrosion
Specifications / Approvals
- DIN 51517-3 CLPF type
Features & Benefits
- Very high shock and load carrying.
- Good resitance to ageing
- High resistance to corrosion
Technical specifications
| GLISS number | 14FA5D |
| MSDS code | 467007 |
| Colour Visual | Black |
| Density @ 15°C / 59°F, ISO 12185 / ASTM D4052, kg/m³ | 902 |
| Kinematic Viscosity @ 40°C / 104°F, ISO 3104 / ASTM D445, mm²/s | 680 |
| Kinematic Viscosity @ 100°C / 212°F, ISO 3104 / ASTM D445, mm²/s | 38.7 |
| Viscosity Index, ISO 2909 / ASTM D2270 | 94 |
| Flash Point – open cup method, ISO 2592 / ASTM D92, °C/°F | 284/543 |
| Pour Point, ISO 3016 / ASTM D97, °C/°F | -6/+21 |
| Acid Number, ISO 6618 / ASTM D974, mg KOH/g | 0.32 |
| Sludging and Corrosion – TOST 1000 hour, ASTM D4310, TAN increase (mg KOH/g) | <2.0 |
| Rust test – distilled water (24 hrs), ISO 7120 / ASTM D665A, Rating | Pass |
| Rust test – synthetic seawater (24 hrs), ISO 7120 / ASTM D665B, Rating | Pass |
| Copper corrosion (24 hrs@100°C/212°F), ISO 2160 / ASTM D130, Rating | 1 |
| FZG Gear Scuffing test – A/8.3/90, ISO 14635-1, Failure Load Stage | >12 |
| FZG Gear Scuffing test – A/16.6/140, ISO 14635-1 (modified), Failure Load Stage | >12 |
| Foam Sequence I – tendency / stability, ISO 6247 / ASTM D892, ml/ml | <50/0 |




