Industrial Gear Oil Performance and Specifications

The minimum performance requirements for mainline industrial gear oils are anti-wear and extreme pressure (EP) protection, corrosion and oxidation resistance, and good foam and demulsibility control. Higher performance industrial gear technologies will also provide an element of superior thermal stability and cleanliness, along with enhanced materials compatibility, bearing protection and a resistance to micropitting (also known as grey staining). In some milder applications where loads are lighter, rust and oxidation-inhibited (R&O) oils are sometimes used.

Specifications covering industrial gear oils can be classified into three categories, according to the level of performance provided and the level of testing complexity and difficulty:

  • General industry standards such as DIN 51517 and AGMA 9005-E02
  • OEM specifications such as Siemens MD (Flender) and Hansen Industrial Transmissions
  • Wind turbine builders such as Winergy and ZF Wind

Industrial gear oils can cover a wide range of viscosities, from ISO VG 68 up to ISO VG 1500 and beyond; most common are the ISO 150-320 grades. The robust additives formulated by Lubrizol will ensure performance is extended from the lightest viscosity through to the heaviest grade.