Mobil SHC™ Gear 320 WT — Wind Turbine Gearbox Oil
Mobil SHC™ Gear 320 WT — Wind Turbine Gearbox Oil
SKU:120778
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ExxonMobil · Mobil SHC™ · Authorised Distributor — South Africa
Mobil SHC™ Gear 320 WT is ExxonMobil's premium fully synthetic wind turbine gearbox lubricant — the world's first gear oil independently certified by DNV-GL to not contribute to the oil-related effects of White Etching Cracks (WEC), which account for 60% of all wind turbine gearbox failures globally. Formulated using next-generation polyalphaolefin (PAO) synthetic base oils and scientifically engineered proprietary additive technology, it delivers outstanding protection against micropitting, scuffing, WEC and conventional gear wear under the extreme load, vibration and temperature cycling conditions of modern wind turbine gearboxes. Approved by GE for all 50,000+ GE wind turbines worldwide, and backed by a 10-year product warranty — one of the longest in the industry. Widely used across African wind farm operations. Available in 208L drum from Orbit Industrial — authorised Mobil distributor, South Africa.
World First — DNV-GL WEC Certification
60% of wind turbine gearbox failures are caused by White Etching Cracks (WEC).
Mobil SHC Gear 320 WT is the first lubricant in the world to be independently certified by DNV-GL — the world's leading certification body for renewable energy — to not contribute to the oil-related effects of White Etching Cracks. This certification has been independently confirmed twice. For African wind farm operators, this means the single most critical gearbox failure risk is eliminated at the lubricant level.
At a Glance
ISO 320
Viscosity Grade
WEC
DNV-GL Certified
10 Yr
Product Warranty
PAO
Fully Synthetic
GE
Approved — 50,000+ Turbines
IEC
61400-4 Compliant
Technical Documentation
TDS
Mobil SHC™ Gear 320 WT — Technical Data Sheet
Click to view · ExxonMobil · Distributed by Orbit Industrial
For Safety Data Sheet (SDS) visit msds.exxonmobil.com →
Features & Benefits
World-First WEC Certification — DNV-GL
The first and only gear oil in the world independently certified by DNV-GL to not contribute to White Etching Crack formation. WEC causes 60% of wind turbine gearbox failures globally — eliminating oil-related WEC risk at the lubrication level is the single most impactful maintenance decision a wind farm operator can make.
Outstanding Micropitting Resistance
Next-generation PAO base oils and proprietary additive technology deliver a high level of resistance against micropitting fatigue — the progressive surface fatigue failure mode that causes premature gear and bearing failure in wind turbine planetary and parallel shaft gearboxes.
Excellent Oxidation & Thermal Stability
Next-generation PAO base oils selected for exceptional oxidation resistance and thermal properties — maintaining oil integrity over long drain intervals in wind turbines subjected to the extreme temperature cycling, intermittent loading and rotor vibration of African wind conditions.
Excellent Scuffing & Wear Protection
Scientifically engineered proprietary additive technology protects against scuffing and conventional gear wear under high-load, high-speed conditions — extending gear and bearing life and minimising the frequency and cost of gearbox inspections and component replacements.
Outstanding Air Release & Low-Temp Flow
The novel PAO blending approach delivers superior air release and low-temperature flow characteristics versus other synthetic gear oils — ensuring rapid lubrication film build-up on cold starts and preventing the air entrainment and foaming that reduce film strength in high-speed gearboxes.
10-Year Product Warranty
Backed by a 10-year ExxonMobil product warranty — one of the longest warranties in the wind turbine lubricant market. Provides wind farm operators and asset owners with long-term lubricant performance assurance and reduces warranty administration complexity across large-scale African wind energy projects.
Recommended Applications
Wind Turbine Main Gearboxes
Primary application — main planetary and parallel shaft gearboxes in utility-scale wind turbines across South African and African wind farm operations. GE, Vestas, Siemens Gamesa, Nordex and all major OEM turbines.
Pitch & Yaw Drive Gearmotors
Auxiliary gearmotors for pitch control and yaw drive systems — where the same lubricant covering main gearbox and auxiliary drives simplifies inventory management across large wind farm fleets.
African Wind Farms
Widely used across South African, East African and West African wind energy projects — where the combination of high ambient temperatures, dust ingestion risk and remote location makes extended drain intervals and gearbox protection reliability critical.
Flushing note: While Mobil SHC Gear 320 WT is compatible with mineral oil-based gear oils, it is recommended that gearboxes are thoroughly flushed before switching to Mobil SHC Gear 320 WT to achieve maximum performance. Contact Orbit Industrial for flushing procedure guidance.
OEM Approvals & Certifications
Multiple OEM Approvals
All major wind turbine manufacturers
10-Year Warranty
ExxonMobil product warranty
Cleanliness Level
Meets IEC 61400-4 requirements
Typical Properties
| Property | Test Method | Value |
|---|---|---|
| ISO Viscosity Grade | — | 320 |
| Kinematic Viscosity @ 40°C (cSt) | ASTM D445 | 320 |
| Kinematic Viscosity @ 100°C (cSt) | ASTM D445 | 36.4 |
| Viscosity Index | ASTM D2270 | 162 |
| Flash Point (°C) | ASTM D92 | 270 |
| Pour Point (°C) | ASTM D97 | -39 |
| Density @ 15°C (kg/l) | ASTM D4052 | 0.860 |
| Base Stock | — | Next-generation PAO (Polyalphaolefin) — fully synthetic |
Typical properties — not guaranteed specifications.
Available Pack Size
In Stock — South Africa
208 Litre Drum
Wind farm operations & maintenance contractors
Also suitable as a standard Mobil SHC Gear 320 replacement
Mobil SHC Gear 320 WT can be used in any industrial application where Mobil SHC Gear 320 is specified — including enclosed industrial gearboxes, conveyor drives, crusher gearboxes and processing plant gear drives. The WT formulation meets or exceeds all standard SHC Gear 320 performance requirements while adding wind turbine-specific WEC protection. Contact Orbit Industrial to confirm suitability for your application.
Orbit Industrial supplies wind energy projects and maintenance contractors across South Africa and sub-Saharan Africa — with competitive pricing for wind farm supply contracts, tender documentation and same-business-day response on procurement enquiries. Request a quote →
Request a Quote — Mobil SHC™ Gear 320 WT
Available in 208L drum. Authorised ExxonMobil distributor. Competitive pricing for South African and African wind farm projects. Technical documentation and warranty information on request.
Orbit Industrial Supplies is an authorised ExxonMobil distributor supplying genuine Mobil™ synthetic gear oils, engine oils, hydraulic fluids and industrial lubricants to the wind energy, mining, marine and industrial sectors across South Africa and sub-Saharan Africa. Request a quote → · View full Mobil range →
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