Shell Omala S3 Wind
Mineral oil for wind turbine main gearboxes
ISO VG 320
| Property | Typical value | Method |
|---|---|---|
| Density @ 15.6 Cg/ml | 0.847 | ASTM D4052 |
| Flash point, Cleveland Open Cup°C | 262 | ASTM D92 |
| Foam, Sequence II, Stabilityml | 0 | ASTM D892 |
| Foam, Sequence II, Tendencyml | 0 | ASTM D892 |
| Rust Characteristics, Procedure B | Pass | ASTM D665 |
| Pour point°C | -45 | ASTM D5950 |
| Viscosity index | 185 | ASTM D2270 |
| Kinematic viscosity @ 40 Cmm2/s | 345 | ASTM D445 |
| Emulsion, Time to 37 mL Water, 82 Cmin | 20 | ASTM D1401 |
| ISO 4406 Cleanliness, class | -/14/11 | ISO 4407 |
| FZG Micropitting, Fail stageRating | >10 | FVA 54 |
| FZG Micropitting, GFT-classRating | High | FVA 54 |
| FZG Scuffing, A/8.3/90, Fail stageRating | 14+ | DIN 51354 |
| Kinematic viscosity @ 100 Cmm2/s | 44.1 | ASTM D445 |
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Mobil SHC™ Gear 320 WindPower is an advanced, high-performance synthetic wind turbine gear oil formulated with ExxonMobil's metallocene polyalphaolefin (mPAO) synthetic base oil and proprietary additive technology. It is engineered to provide optimum equipment protection and maximize lubricant life in wind turbine gearboxes, with increased lubrication film thickness that gives outstanding wear protection and higher load-carrying capacity, helping prevent surface fatigue failures. The oil is certified by DNV to not contribute to oil-related White Etching Crack (WEC) effects, and — when used together with Mobil Xtra™ EP WT top-treat additive — has demonstrated fill-for-life capability through accelerated ageing testing, with DNV certifying its suitability for use throughout a 25-year wind turbine gearbox lifetime. It also offers superb protection against micropitting fatigue wear, high resistance to traditional scuffing, outstanding foam protection even after fine filtration, and a low-sulfur formulation for compatibility with yellow metals and soft coatings. The product was developed in accordance with APQP4Wind standards and best practices. Mobil SHC Gear 320 WindPower is recommended primarily for wind turbine main gearboxes, as well as auxiliary gearboxes such as pitch and yaw drive gear motors, and heavily loaded gearboxes with surface-hardened tooth metallurgies subject to micropitting. It meets or exceeds IEC 61400-4, AGMA 9005-F16 AS, DIN 51517-3 and ISO 12925-1 (L-CKD, L-CKSMP, L-CTPR) requirements, and is non-toxic to aquatic organisms per the GESAMP hazard evaluation procedure.
IEC 61400-4 — wind-turbine gearboxes
The IEC design standard for wind-turbine gearboxes, including lubricant selection and testing requirements referenced by gear-oil makers.
Industrial gear lubricant CKD — ISO 12925
Class CKD of ISO 12925-1: a gear oil with the same additive package as CKC but greater thermal stability, for gear units running hot.
Industrial gear lubricant Type CKSMP — ISO 12925
Class CKSMP: gear oils containing solid lubricants, for open or slow-running gears under very high loads.
Industrial gear lubricant CTPR — ISO 12925-1
Class CTPR, added in the 2024 edition of ISO 12925-1, for enclosed gear drives.
AGMA 9005-F16, antiscuff (AS) oils
The antiscuff (AS) lubricant class of AGMA 9005-F16 — the current term for what earlier editions called "EP" (extreme-pressure) enclosed gear drive oils.
Industrial gear oil CLP — DIN 51517, part 3
Part 3 of the German lubricating oil standard: class CLP, gear oils with extreme-pressure additives. It requires an FZG pass plus corrosion and ageing protection.
GESAMP hazard evaluation procedure
Procedure used by the UN-sponsored GESAMP expert group to evaluate the hazards of chemicals, including toxicity to aquatic organisms, in the marine environment.Source