Lithium greases have a smooth and buttery appearance with low fibrous content. Lithium complex increases that temperature threshold to 260°C. 1. It is the oil in the formulation that actually does the lubricating. By clicking “Accept”, you consent to the use of cookies and confirm that you are 16 or older. grease, aluminum grease, lithium grease, silicone grease, polyurea grease and others (Boehringer,1992). are widely used in industries, e.g. The first use of grease dates back to ancient times, when man first used animal fats and vegetable oils to reduce friction. Performance-wise, aluminum-complex grease performs just as well as lithium-complex grease in many aspects and may even surpass it in a few key areas, but it is more expensive to produce. Lithium Complex Soap Grease The soap is formed by reaction of lithium hydroxide with the mixture of fatty acid and dibasic acid. Whether you market economic or premium grade greases, Afton’s HiTEC® additives can help address your … A reference thermal cycle [ 23] was followed during the saponification, soap dissolution and re-crystallization stages, which were carried out in the reactor. Most greases produced today use mineral oil as their fluid components. Lithium complex grease has excellent heat and water resistance and rust preventing property, as well as longer life at high temperature than lithium soap grease. automobile, steel, aircrafts, heavy Our lithium grease will allow you to grease your ball and needle bearings, but also your plain bearings, axes, joints. lithium stearate (mainly lithium 12-hydroxy-stearate), which acts as Reduces friction, while protecting against rust and corrosion. We offer rapid response, flexibility and competitive pricing so that our customers can be successful. Lithium Complex greases first entered the market in 1962. This, in essence, is the role of a grease. Globally, Lithium complex grease is prepared by co-crystallization of two or more mono or dicarboxylic acids and or their esters with Lithium hydroxide. Traditionally, metallic soaps such as calcium stearate, sodium stearate, and lithium stearate are used as thickeners. Therefore the oil needs a carrier of some kind to keep it in place and release it slowly into the parts to be lubricated. Because greases are formulated for their intended applications, and the properties of the grease are very important, several laboratory tests are used to assess grease properties. Base Oil. By far the two most popular choices are lithium complex and calcium sulfonate grease (which we briefly spoke about). However oil poured into a bearing would very quickly find its way back out of the bearing! The grease keeps its soap fiber structure intact at 390° to 400° F., typical of the melting range of lithium 12-hydroxystearate greases. Lithium greases are water resistant and additionally It can be used at temperature up to 135 °C and extreme pressure and speed Machines (Totten, et al. Low to relatively high thickener content 7-12% by weight; Smooth to slightly fibrous texture The CV joints transfer the power generated by the transmission to the drive wheels, maintaining a constant speed, and account for the the up-and-down motion generated by the suspension. LITHIUM GREASE & CV JOINTS: The CV (constant velocity) joint connects the transmission to the wheels via the drive shaft. Most of the reported data about grease lubrication are focused on rolling bearings applications, which significantly differ from rail lubrication. Lithium greases are by far the most popular grease worldwide, because they have excellent heat tolerance like the sodium greases and the water resistance of calcium greases. The grease composition has a higher thickener yield, yet good mechanical properties. White and creamy in appearance, the White Lithium Grease resist extreme pressure properties and is recommended for everything from household applications, to a variety of automotive uses including chassis, trucks, tractors, and contractor equipment. They also work well in low temperatures. This sealing problem can often be simplified if lubricants are employed which resist the deforming effect of gravity. Lithium greases have a high water resistance and dropping point about 190 °C. Grease specifications, on the other hand, often lack the detail necessary to make a proper selection, leaving it up to the lubrication engineer to create the specification. This kind of grease have excellent water resistance and good heat resistance. The base oil and additive package are the major components in grease formulations, and as such, exert considerable influence on the behavior of the grease. The thickener in a lubricating grease is the component that sets grease apart from fluid lubricants. Formulation of lubricating grease using Beeswax thickener. The thickener is often referred to as a sponge that holds the lubricant (base oil plus additives). Lithium Grease EP2 ( 220cSt, Tan ) is tan in colour and whose formulation includes a full treat of extreme pressure (EP) and corrosion preventative additives enabling the grease to meet or exceed internationally recognised performance standards. These components are oil, thickener and additives. Lithium greases are buttery in texture, with high melting points above 175 °C. The science of lubricating technology has come a long way since ancient times. They are also View on Vehicle. Selecting the best grease for a job requires narrowing down your choices by understanding what’s going to perform the best for your application. The lithium 12-hydroxystearate grease has been prepared by a standard kettle procedure. Not all application requirements are the same, and not all greases are suitable for every situation. The normal grease contains lithium 12-hydroxystearate soap. thickener in the final grease formulation. Afton Chemical offers a variety of specialized Multi-Functional & Component based grease packages to help you simplify the formulating & production processes. As this definition indicates, there are three components that form lubricating grease. Also, changes in both microstructure and rheology of lithium lubricating greases during their manufacturing process have been evaluated. They are also characterized by a very wide working temperature range. In stock and ready to ship. Addition of molybdenum disulfide to lithium-based grease makes this lubricant especially effective for sliding motions, such as sleeve journal rotating shafts and ball joints. Fatty acids such as lithium 12-hydroxystearate can also be used. characterized by a very wide working temperature range. 3-in-One Professional White Lithium Grease features a water and heat-resistant formulation provides you with a long-lasting, heavy-duty lubricant; Reduces friction, while protecting against rust and corrosion; Sprays on evenly as a liquid, and sets up dry for a thick coating - will not splatter, melt, run, wash-off or … Synthetic Oil Viscosity is 90 CSt at 40 Deg. The grease composition comprises a lubricating oil, a lithium complex thickener and a copolymer, which in one embodiment may comprise styrene and butadiene. Can any one help me with formulation. Posted on October 15, 2018 - Product News. The effects that soap concentration, base oil viscosity and additives exert on the rheology of lubricating greases have been studied. automobile, steel, aircrafts, heavy Details of the procedure and chemistry are illustrated for the preparation of the lithium complex grease based on sebacic acid and the synthetic hydrocarbon base oil. Grease formulation and synthesis is a complex task since it requires a balanced proportion of soap in a base stock with the correct amount and types of additives to provide grease with desired performance in the intended application area. View Our Range 2 lithium grease … Figure 1. Lucas white lithium grease is a multi-purpose high quality NLGI #2 formulation. tuning or even a complete new formulation. The effects that soap concentration, base oil viscosity and additives exert on the rheology of lubricating greases have been studied. Additives for Grease Formulations Ivanhoe Industries offers a wide variety of additives for use in lubricating greases. You can always opt-out (e.g. In summary, the Celtia is a blond grease with a wide spectrum of use. When comparing our two multi-purpose grease types (lithium complex and calcium sulfonate), calcium greases tend to perform a little bit better in the Dropping Point test, again due to their soap complex formulation. Complex thickeners are usually based on lithium, calcium, or aluminum compounds. characterized by a very wide working temperature range. Lithium Complex Greases are favored over traditional Lithium greases because of their higher dropping points and improved heat resistance. Operating temperature: 0 °C - 149 °C. Easy squeeze tube application provides easier use. It has a dropping point around 205°C and can be used at temperatures up to about 150°C It can also be used at temperatures as low as (-)35°C. grease production for technical applications. Process parameters and sequence of additions of ingredients need to be followed carefully.
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