Several aspects take influence on the pitting load carrying capacity of cylindrical gears. Currently, the international standard ISO 6336-2 for the calculation of the surface durability against (macro-)pitting considers properties regarding the lubricant and lubrication by regressions with the nominal viscosity, velocity at the pitch point, and surface roughness of the gear flanks . Within this research, different analyses are conducted with a variety of experimental test results to identify the influence of lubricant properties and lubricating conditions on the pitting load carrying capacity of cylindrical gears. In the past, a more physically oriented approach for determining the pitting load carrying capacity was already developed by Knauer (FZG, 1988) which is being based on the German standard DIN 3990-2 (predecessor of ISO 6336-2). This research reveals further demand for research to quantify the contribution of the lubricant properties and lubricating conditions on the pitting load carrying capacity in detail.