The effect of long-chain polar compounds on the coefficient of kinetic friction under boundary conditions has been studied using the Boerlage four-ball friction apparatus in various modifications.

Most bearings operate with a fluid film -- oil, another liquid, or a gas. By far the largest number of bearings are oil lubricated. The oil film can be maintained through pumping by a pressurization ...

(Nanowerk News) Many tribological systems are operated at their load limits for reasons of efficiency. Lubrication gaps are becoming narrower and lubricating films must withstand greater loads. For ...

The frictional properties of any plain bearing depend on the lubrication system. Either hydrodynamic or hydrostatic lubrication can provide low friction. Gas bearings have the lowest friction levels.

The study of tribological behaviour in hip joint replacements is critical for optimising implant longevity and reducing revision rates. Recent research has focused on understanding the complex ...

Lubricated mechanical conditions are ones in which lubricant is used primarily to reduce the wear and friction of sliding contacts; most mechanical components function under this kind of condition.