grease thickener types

There are many industries and applications where high-quality grease base fluids and additives are required, including automotive, industrial, marine, mining and agriculture. There is a small range of soaps and non-soaps available with a similar range of pros and cons. This is measured by penetration. The minerals are purified into a clay and treated to be compatible with organic chemicals. The upper operating temperature of silica grease is determined by the base oil with which it is combined. While there's a lot to choose from, the most common types of specialty greases are anti-seize grease, dielectric grease (also known as silicone grease), assembly grease, chassis grease, etc. Simple soaps are the most common grease thickeners. However, these charts rarely tell the whole story, even just in terms of the thickener compatibility. Since there are no metallic elements in polyurea grease, the grease is ashless and subsequently more oxidatively stable. The lubricant film thickness behaviors of lithium (Li) thickener type greases and their base oil were investigated for the contact between a glass disk and a smooth/dented steel ball using an . Rational Energies Marks Million Gallon Production Milestone, Dr. Raj Shah receives award at STLE Annual Meeting, Emery Oleochemicals Announces New U.S. Distribution Partner, NLGI India Presents Dr. Raj Shah with Singular Honor, Monson, an Azelis company, hires Tony Yerkes, Pack Logix Completes the Acquisition of Spectrum / Phillips 66 Waukesha Packaging Facility, Schaeffer's Specialized Lubricants: Product Innovation Specialist Named Executive VP of Operations, Sea-Land Chemical Company Expands Operations Team, OFFICIAL LAUNCH OF ASIAN LUBRICANT MANUFACTURERS UNION (ALMU) - Singapores Enterprise Promotion Centres (EPC) Appointed As Association Manager For ALMU. Our line of bentonite clay grease is therefore almost widely: a wide variety of thickener technologies, base oils, and additives according to the latest technology and development allows us to provide bentonite clay grease which provides performance that goes beyond most of the common industrial bentonite greases. Different types and combinations of base fluids and thickeners, along with supplemental structure modifiers and performance additives, combine to give the final product its special lubricating properties. Grease can also be thickened with non-soap materials. Single-row 15 angular contact, Type R and XLS . Multipurpose Greases, NLGI Grade: 1, PTFE Grease Thickener. Now lets get a little more in-depth and discuss the thickeners that give grease its properties. These greases provide strong heat and water resistance without sacrificing other properties. So, why is the selection of a grease thickener so important? The most common types are simple lithium soaps, lithium complex and polyurea. For example, a lithium complex thickener typically contains lithium 12-hydroxystearate (simple soap) and a salt of a shorter chain difunctional carboxylic acid, boric acid, or an aromatic acid (complexing agent). Thickeners are molecules, polymers, or particles that are partially soluble in lubricating fluid; they arrange themselves in such a way that they impart a semi-solid consistency to the grease. Organophilic Clay: Also referred to as organo clay or clay thickeners, these thickeners are mineral based usually made from bentonite, hectorite, or montmorillonite. Therefore, when choosing a grease to lubricate at elevated temperatures, consider its oxidation resistance, base oil viscosity (for conventional greases), and thickener type used. The focus in this article is on organic thickeners such as lithium stearate, sodium dodecylsulfate and diurea. Switching and mixing greases could either prove to be extremely costly. With Polyurea Greases we are talking about a specific type of thickener for lubricating greases. lithium, calcium, etc. Other nonsoap greases include Na terephthalamate Grease, Copper Phthalocyanine Grease, Teflon (PTFE) Grease, Mica Grease and Silica Gel Grease. 2). Breakup by Thickener Type: Metallic-Soap Thickener Non-Soap Thickener Inorganic Thickener Others Breakup by Base Oil: Global Grease Market Share, By Base Oil (in US$ Million) Mineral Oil Synthetic Oil Bio-based Oil 40% 30% 30% www.imarcgroup.com Generally, the speed of oxidation doubles for every 10C above 120C. Figure 1 -Grease thickeners types. While conventional, mineral oil-based greases can be formulated to deliver effective performance for many applications, synthetics typically deliver significant advantages, including extended oil life. For instance, if I wanted to use a grease for a roller bearing in a very high temperature environment which should I choose? Grease is an excellent lubricant to use when liquid lubricants fail to do the job. The thickener type is a very important consideration in grease selection. Defined as consistency, a greases consistency is its resistance to deformation by applied force. Fluoropolymer powders such as PTFE (polytetrafluoroethylene) can be used to thicken lubricating fluids to form grease. Lockhart Introduces Food Grade Overbased Calcium Sulfonate, The 2nd North American Industrial Lubricants Congress, Sea-Land Chemical Co. Grease compatibility charts (such as the one pictured below) can only help compare the thickener types of greases. When the grease washes off quickly, the pins holding the bucket can become damaged. These minerals are purified to remove any non-clay material, ground to the desired particle size distribution, and then chemically treated to make the particles organophilic (more compatible with organic chemicals). Clay Thickened Grease Clay Thickened Grease : Grease thickener types Grease thickener types include organic bentonite clay and Inorganic bentonite clay in lubricant grease. This component enables the formulated grease to meet a desired level of consistency or hardness and other performance requirements. Non-soap products can also be used to thicken grease. Im frequently asked if synthetic oil-based greases are really better than mineral oil-based greases. The right grease could vary greatly depending on your application, operating environment, and other factors. These greases also have no defined melting point and can be used in high-temperature applications. Used for over 3000 years, grease is a key lubricant used to operate a variety of machines and bearings. The additives supplement the lubricating capability of the base oil, improving upon characteristics such as wear protection and rust prevention. These greases provide strong heat and water resistance without sacrificing other properties. High penetration greases such as 00 and 0 can be used in central systems and colder environments. The base oil that performs the actual lubrication can be mineral oil, synthetic oil, or biobased oil. We are going to examine the second component: thickeners. Simple soaps. Mobil Serv Lubricant Analysis (MSLA) delivers a full spectrum analysis of your current lubricants, which no other service can provide. Soap thickeners are the product of the reaction between a metallic hydroxide and a fatty acid coming from vegetable or animal oils. Grease thickeners can be divided into two categories, soap and non-soap. Single-row angular contact, split . Greases are classified into two major families: soap and non-soap thickeners. Like clay, silica particles are dispersed in lubricating fluid. Thickener type, otherwise called soaps or non-soaps, has a wide range that can include aluminum, calcium, polyurea, or lithium, among others . These soaps include lithium, aluminum, clay, polyurea, sodium and calcium. These thickener types have an advantage over simple soap because of better high-temperature properties. NLGI viscosity grade is a rating of a grease's consistency. The Mobil grease product line whether mineral based or synthetic is designed for all-around balanced performance even in extreme operating conditions. Mixing of grease can be determined by looking at thickener type and additives. They are formulated to withstand wide temperature ranges and often provide an extended service life in demanding applications. The most common soap, lithium soap, is produced. Each area of application may be different and while multipurpose greases are widely used there are some areas where it doesnt add much value. Soap-based thickeners are produced via an acid-base reaction known as saponification. Thickeners impact greases as follows. Grease thickeners. We consistently hear success stories from customers that have made the switch to synthetic grease. More than 90 % of thickeners are soap based. They are being selected because of their high dropping points and excellent load-carrying abilities. Mixing of polyurea and lithium complex grease caused the oil to run out of the grease leaving only the thickeners to do the lubricating. The thickener defines the type of grease (see Fig. Find out what makes a good thickener, an essential component of grease. The type of soap thickener will depend on which acids and bases are used in saponification. Some single-point auto-lubers (spring type) expose grease to constant pressure, which causes bleed and separation from the thickener. We are going to examine the second component: thickeners. Silica Silica greases have excellent heat resistance. More complex thickeners, as well as lithium, polyurea, silica, calcium, are short fibered thickeners. The thickener acts like a sponge; its job is to hold oil in reserve until needed to lubricate. It's essentially what makes grease, a grease, rather than an oil. Strategic Reliability Solutions Ltd. All Rights Reserved. Find information on Mobil industrial oils and greases designed to meet the demanding performance needs of your industry. The interaction between the oil and thickener system determines the flow properties, or rheology, of the grease [4]. Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), ICML 55 the revolution in the lubrication sector, Lubrication failures in Industrial plants, 5 Habits of an Extraordinary Reliability Engineer My review, Maintenance Planning & Scheduling (On Demand Courses), Online Lubrication Certification Exam Preparation Courses, Lubrication Degradation Getting into the Root Causes, Empowering Women in STEM Personal Stories and Career Journeys from Around the World. Clay particles are then dispersed in a fluid lubricant to form grease. Soap-based thickeners are produced via an acid-base reaction known as saponification. Applications by Thickener Type Greases are usually marketed and recognized by thickener type. Thickener Type 3. This reaction has a special name: saponification. The unit of measure is tenths of a millimeter and the NLGI classifies grease based on its penetration. When the stress is released, the thickener and oil return to their semi-solid or solid state. A standard test, specifically ASTM D217, measures cone penetration after five (5) seconds for a grease at 77 F (25 C). Soap Greases. Types of thickeners that are commonly used are simple and complex soaps, which are based on lithium, calcium, aluminium, sodium, and barium compounds. Lithium complex grease, the most popular in North America, is made with lithium hydroxide, 12 HSA, and azelaic acid. Sign up for a free trial today to see how MSLA can help your business. The thickener defines the type of grease. NLGI 2 is about the consistency of peanut butter. Different types of greases are typically formulated with three grease components: base oil, thickener and additives. Expands Relationship with Ingevity. Simple soaps are most commonly based on salts of lithium and calcium, and less commonly on salts of sodium, aluminum, and barium. Above is a table indicating the various uses of greases based on the thickener types. Not common. The reason being, some polyurea thickeners are completely compatible with lithium and lithium complex thickeners, while others are incompatible. Types of Thickeners. I=Incompatible, C=Compatible, and B=Borderline. The following grease properties are directly related to the type of thickener: Amount determines consistency Shear stability Oxidation resistance Water resistance Dropping point Compatibility Oil separation Cost Different types of greases are typically formulated with three grease components: base oil, thickener and additives. Help on switching browsers can be found online. The end result is a soap and water mixture. Synthetic fluids provide superior lubricating capability across a much wider application temperature range, all other things being equivalent. Grease thickeners are chemical compounds that are used as one of the key components in formulation of greases. Complex soaps are also used widely as grease thickeners. Fluids & Lubricants Type: Greases, Gear Oils & Lubricants. The ratios of the ingredients will determine the characteristics of the thickener. Polyurea can be used to refer to diureas, tetraureas, urea-urethane and other related chemicals. Comparison of properties of grease due to thickener Soap Thickener O: Outstanding E: Excellent G: Good F: Fair P: Poor Non-Soap Thickener O: Outstanding E: Excellent G: Good F: Fair P: Poor Above is a table indicating the various uses of greases based on the thickener types. Greases are made of three main components: base oil (70-95%), thickener (3-30%), and additives (up to 10%). For example, if a heavy equipment operator uses a backhoe to dig into a river, the multipurpose grease can be easily washed off. Soap-based thickeners are produced from an acid base reaction. Lubricating grease consists of 65-95% base oil, 3-30% thickener and 0-10% additives. This soft grease is ideal for low-viscosity applications, such as in centralized lubrication systems. Other: Polyurea and clay thickeners are the most used non-soap greases, but there are some other specialty thickeners that are used. Complex thickeners are usually based on lithium, calcium, or aluminum compounds. Here, we say the lubricant grease thickener is Bentonite organoclay. In some cases, dissimilar thickener types are combined in a grease. Numerous types of grease thickeners are currently in use, each with its own pros and cons. You also need to consider the operating conditions of the grease (temperature, sheer rate, etc.) When mixing oils, the key considerations are the viscosity of each product, the base oil type and the thickener. Compatible with plastics and elastomers, PTFE thickeners offer good thermal stability, shear stability, water resistance, and lubricity. Protective coatings and linings are often made from polyurethanes or polyureas. Grease manufacturing is a highly complex and detailed process that starts with base oil, thickener and additives. Examples of simple soap thickeners include lithium 12-hydroxystearate and calcium stearate. High temperature environments may require firmer (higher NLGI grade) greases and certain thickeners with high-temperature properties. Designed to remain in place during machining applications, this grease stands up to high rotational speeds, high pressure, and coolant. Firstly, we have to define what a grease thickener is. 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