Ertel-1955
General Topics

On the history of elastohydrodynamics

01.02.2018 tribonet 688 Views

Here we present an abstract to a paper devoted to the history of eastohydrodynamic theory and his founder – Alexander Mohrenstein-Ertel. This paper discusses in detailes the peculiar biography of the scientist and the early years of the […]

General Topics

After the Mystery of Rotary Lip Seals

07.02.2017 F. Xavier Borras 2,819 Views

Lip seals compete with mechanical face seals in sealing oil or grease in rotary shaft applications. Under certain running conditions both kinds of seals can be used however, the latter ones are generally used for […]

grease-image-featured
General Topics

What contributes to thicker grease films ?

27.09.2016 Febin Cyriac 210 Views

A rolling bearing preferably runs under EHL conditions. The film thickness between the rolling elements and the rings is determined by the lubricant properties, operating conditions and bearing design. During the initial phase of operation, […]

SimpleScalingLaws
General Topics

Contact Area vs. Load: Simple Scaling Laws

04.07.2016 Aydar Akchurin 643 Views

“God made the bulk; surfaces were invented by the devil”, a Nobel prize winning physicist Wolfgang Ernst Pauli said. In tribology, as in many other sciences, surface features (asperities, roughness) play an important role. In […]

AFM_WearParticles
General Topics

Small Particles – Big Problems

27.06.2016 Aydar Akchurin 253 Views

Tiny particles are all over around us and sometimes they may create problems. This is especially of concern with metal particles formed due to wear in man-made engineering devices. Particles formed in car disk brakes […]