Axle gear oils: Tribological characterization under full film lubrication

作者：Hammami Maroua^*; Martins Ramiro; Abbes Mohamed Slim; Haddar Mohamed; Seabr Jorge

来源：Tribology International, 2017, 106: 109-122.

DOI：10.1016/j.triboint.2016.05.051

• Axle oils
• Tribological properties
• Film thickness
• Friction coefficient

The tribological properties of five axle gear oils are characterized. Three oils (75W90-A, 80W90-A and 75W140-A), available on the market and labeled as "Fuel Efficient", were selected together with two candidate products (75W85-B and 75W90-B). Their viscosity, film generation and traction properties were measured for three different temperatures under full film lubrication regime.
The product formulation and the measured properties promote significant differences under full film lubrication. The film thickness is directly related with the Lubricant Parameter while the traction coefficient depends on the base oil and it decreases with the increase of Viscosity Index and the decrease of Piezoviscosity. So, new lubricants with lower viscosity but holding high VI and low Piezoviscosity are promising for this application.

• 出版日期2017-2