This test makes it possible to compare the surface of wear between two machine elements. It shows the superiority of the lubricating products Bardahl.

The frictiometer is an apparatus which makes it possible to test the lubricity of an oil on machine elements in friction one against the other.

Thanks to a lever for reducing purpose, one applies a force of crushing of a fixed steel roller which comes to slow down a mobile bearing cage driven by an electric motor of strong power.

Thanks to the dynamometer integrated into the lever of the frictiometer, it is possible to measure the exact pressure applied at the time of the seizing of the roller to the bearing cage.

The pressure continues roller on the bearing led to a mark of wear very marked by wrenching of metal at the time of an insufficient lubrication (lubricant of bad quality).

The result is obvious: same oil, tested with and without Bardahl additive, present of the performances without common measurement, as the comparison testifies some to the roller used with oil alone and to the roller which had the chance to be used with oil having received the Bardahl additive. With Bardahl, the oil film is unbreakable, antiusure, antifriction metal, anti-corrosive, and resists the most extreme pressures. 
This test highlights the capacity of the lubricant to avoid seizing at the time of temporarily elevated loads. Lubricants BARDAHL avoid the rupture of lubricating film thus the break-in of the material. 

This graph shows that the load necessary to seize up is 5 times supèrieure thanks to lubricant BARDAHL.
The evolution of the lubricants led to the development of many tests, the test of the 4 balls characterizes best quality "extreme pressure" and "anti-wear" of the analyzed lubricant. Thanks to molecular film BARDAHL, lubricating qualities of our products are easily highlighted not these tests:
This test highlights the capacity of the lubricant to avoid wear thus to protect the matèriel and to lengthen its lifespan even under difficult working conditions. 

This graph shows that wear is divided by 8 thanks to molecular film BARDAHL.