SENTINEL has developed an extensive line of synthetic specialty lubricants.
Because of the extreme pressures that are developed in gears and bearings, and the inability of conventional petroleum lubricants to adequately lubricate these parts, it is necessary to fortify oils and greases with various compounds, which lend the lubricants load carrying capacity. Most companies use chemicals to accomplish this. While these chemicals do lend temporary load support, they can be abrasive which detracts from the ”°slipperiness”± of the lubricant itself. When these chemicals come in contact with water and heat, they form acids, which attacks the moving parts, and their petroleum carrier. These acids become so strong that pitting, corrosion and wear occur unless the lubricant is changed very frequently. Friction causes the lubricants to deteriorate and lose their ability to protect and lubricate.
SENTINEL Lubricants derive their load carrying capacity and ”°slipperiness”± from its synthetic lubricating base stock and self-lubricating metallic solids, which are both chemically and thermally stable. These metallic fortifiers, or self-lubricating metallic solids, are divided into micron and sub-micron particles, then scientifically suspended or blended in oils and greases. Since synthetic oils last at least five items longer, and because of the stability of the metallic solids, SENTINEL lubricants do not need to be changed nearly as often as conventional lubricants.
One of the most important metallic solids contained in SENTINEL is Molybdenum Disulfide, whose chemical formula is MoS 2 . The National Advisory Committee for Aeronautics discovered that Molybdenum Disulfide, in its search for lubricants to be used on aircraft, rocket launching skids and other high temperature/high load applications, had one of the highest lubricity rating of any substance yet discovered. It ”°rolls the load”± like a ball bearing. When a complete film of MoS 2 , is formed on a surface, it will support loads up to 425,000 PSI. Its melting point is 2165”ćF, and is soluble only in sulfuric acid, Aquaregia and hydrochloric acid. These factors make Molybdenum Disulfide one of the most efficient lubricants known. It must be carried to the surfaces to be lubricated by some vehicle.
Much of the success of SENTINEL, however, is due to the field experience of the Company. It does not use commercially available Molybdenum Disulfide powder. It uses sub-micron particles that cannot build up and become abrasive.
SENTINEL uses synthetic oil and grease as carriers for all its metallic self-lubricating solids. As these oils and greases are performing their normal job of lubrication, they are at the same time establishing in the pores of metal, a film of self-lubricating metallic solids. When this film is complete, it is almost impossible to gall or score the bearing surface. Wear is reduced substantially.
The knowledge, through experience, of the proper ways to homogenize, suspend and blend these self-lubricating metallic solids in the proper carrier, represents the current state of the art in lubrication. To the man who operates machinery for a profit, they are the means by which he can maintain that machinery with greater profit at less cost.
|
