Lubricants ensure that the wheels in industry do not stand still. Greases and oils allow, among other things, a longer durability of the machines, protect against corrosion or act as a seal. To achieve these special properties during production, lubricant manufacturers use specific additives. These active ingredients are added to the lubricants in oder to achieve new desirable properties and/or eliminate unwanted ones. Sometimes you meet these hidden helpers on vacation
In summer, when it is warm, it often smells of “lubricating oil” at cable car stations, on platforms or along the tracks of rack railways. It is characteristic of a sulfur-containing additive that enables lubricating oils or greases to cope with the most difficult tasks.
The railroad locomotive of the Brienzer Rothornbahn in Switzerland alone has a weight of approx. 17mt. In addition we also have to consider the weight of the wagons and the passengers. It is hard to imagine the extremely high surface pressure which is present in the rack to pinion metal contact when the fully occupied train climbs the top of the Rothorn – at up to 25 percent gradient! The lubricant constantly applied to the pinion has to withstand extremely harsh conditions and without the performance of sulfur containing Extreme Pressure-additives (EP-Additives), severe damage would occur in a very short period of time.