ExxonMobil reports that its Mobil SHC Gear Series of synthetic industrial gear oils have been approved for use in General Electric (GE) off-highway vehicle motorized wheel gearbox applications requiring GE’s new gear oil specification, D50E35.

Effective as of January 1, the new GE D50E35 specification replaces the D50E27 specification for GE drives used in mining haul trucks. The new spec establishes micro-pitting protection requirements in addition to scuffing wear resistance and other improvements. ExxonMobil said the Mobil SHC Gear Series contain an advanced, proprietary additive system designed to protect gears from conventional wear modes, such as scuffing, while offering a high-level of resistance against micropitting fatigue. In addition, the oils offer the potential for improved lubrication of gearbox rolling element bearings as compared to conventional gear oils. The complete range of viscosities for the Mobil SHC Gear Series, ISO VG 150, 220, 320, 460 and 680, are approved for use under GE Material D50E35, categories A-E.

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