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Mobil SHC " Gear 320 WT - Truly next generation wind turbine gear oil

As the wind industry evolves, issues of safety, productivity and costs are becoming more critical, especially with turbines located in ever more remote areas and extreme conditions. Handling higher loads in increasingly compact gearboxes under these conditions stresses lubricants like never before.

To address these challenges, we drew upon decades of our technology leadership in the industry, our deep understanding of the needs of owner/operators, and our relationships with leading wind turbine and gearbox manufacturers to create a truly groundbreaking, next generation solution: Mobil SHCTM Gear 320 WT gear oil.

Peak turbine availability

In test after test, this uniquely balanced wind turbine gear oil delivers:

  • Outstanding equipment protection in a wide range of temperatures and conditions onshore or offshore, dry or wet
  • State-of-the-art viscometrics, providing stable viscosity along with extraordinary performance at low temperature
  • Superb resistance to micropitting, wear and scuffing, which can help equipment last longer
  • Maximum protection of bearings
  • Excellent foam control performance and trouble-free wet filterability
  • Strong water tolerance

Next generation solutions: long drain intervals

Long drain intervals can help lower your maintenance costs and downtime, while maximizing your turbine availability, production and peace of mind. Most importantly, long drain intervals can help you mitigate potential safety risks caused by employee interaction with equipment. We’re so confident in the durability of Mobil SHCTM Gear 320 WT gear oil that we offer a limited warranty for seven years.

By providing solutions to your greatest challenges, next generation Mobil SHCTM Gear 320 WT gear oil delivers unquestionable value while ensuring that you and your business are prepared for the future.


At a Glance

  • Designed for long lubricant life - seven-year limited warranty
  • Exceptional performance, even in extreme conditions
  • Helps maximize turbine availability and can minimize maintenance costs
  • Provides powerful bearing protection
  • Protects against micropitting and scuffing to help enhance equipment life
  • Engineered to protect even today’s compact and challenging gearboxes
  • Considered by ExxonMobil to be non-toxic to aquatic organisms, according to IMO 493/02

Advancing Productivity TM

Environmental Care
Long oil and equipment life as well as optimum wear protection can help minimize maintenance and the risks associated with employee equipment interaction. Long oil life can help minimize the need for product and packaging disposal, and long drain intervals can help control the risk of spills. In extensive testing, it meets GHS and EU regulations for non-toxicity in aquatic environments. World-class lubricant performance can help enhance wind turbine production by minimizing unscheduled downtime to maximize turbine availability.


Performance Summary

Features   Benefits
This performance chart shows that Mobil SHCTM Gear 320 WTgear oil (in red) has proven to exceed leading wind turbine oil competitors in extensive testing of the most crucial performance and protection categories. Unlike the competitors, which exhibit areas of weakness, Mobil SHCTM Gear 320 WT gear oil performs well in all categories. It has proven far superior in oxidative stability, viscometrics and low-temperature performance.   By comparing benefits, this chart shows the superiority of Mobil SHCTM Gear 320 WT gear oil to all the tested competitors in providing long oil life and drain intervals, as well as in delivering powerful protection at low temperatures.


Specifications and approvals

Mobil SHCTM Gear 320 WT gear oil meets
or exceeds the requirements of:
  • AGMA 9005-E02 (at appropriate viscosity grade)
  • DIN 51517 Part 3 (CLP)
  • ISO 12925-1 Type CKD
  Typical properties*

Test Mobil SHC Gear 320 WT
ISO Viscosity Grade, ISO 3448 320
Viscosity, ASTM D 445
    cSt @ 40°C
    cSt @ 100°C
Viscosity Index, ASTM D 2270 187
Pour Point, °C, ASTM D 97 -45
Flash Point, °C, ASTM D 92 256
Specific Gravity @ 15.6°C kg/l, ASTM D 4052 0.854
FZG Micropitting, FVA Proc No. 54
    Fail Stage
FZG Scuffing, ISO 14635-1 (mod) A/8.3/90, Fail Stage 14+
Rust protection, ASTM D 665, Sea Water Pass
Water Separability, ASTM D 1401, Time to 40/37/3 @ 82°C, minutes 15
Foaming Characteristics, ASTM D 892, Seq. II, Tendency/Stability, ml/ml 0/0
Foaming Characteristics Flender Test, 6% @ 25°C
Micropitting protection, FVA 54 @ 60°C, Load Stage result >10
Micropitting protection, FVA 54 @ 90°C Load Stage result >10
Bearing protection, FAG 4-Stage FE8 Test Pass


*Typical properties are typical of those obtained with normal production tolerance and do not constitute a specification. Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations. The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities.


For more information on Mobil SHC™ Gear 320 WT gear oil, please contact Burke Lubricants, your local Mobil industrial lubricants distributor on +353 (404) 20333, or visit