Strategic Reliability Solutions Ltd. All Rights Reserved. Some common compounds used are: Simple Soap: This results from the reaction of one fatty acid and a metallic hydroxide. Every thickener gives the grease different characteristic properties and is used according to its advantages. lithium, calcium, etc. Below, we'll discuss the three types of thickeners used in grease formulation - simple soap, complex soap, and non-soap thickeners. Over 90% of greases worldwide are classified as soap thickeners. 2022 Twin Specialties Corp. All Rights Reserved. Testing by major grease and bearing manufacturers reveals some grease types are incompatible. Greases are classified into two major families: soap and non-soap thickeners. At 100C the interval decreases to 250 hours. These greases provide strong heat and water resistance without sacrificing other properties. Soap thickeners are the product of the reaction between a metallic hydroxide and a fatty acid coming from vegetable or animal oils. This type of thickener system can be referred to as a hybrid thickener or in some cases as a complex thickener. It components are as follows: 70-90% Base Oil 1-10% Additives 5-20% Thickener / Soap The base oil and additive package heavily influence a grease's behavior. Shell Gadus - Greases. 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. Soap-based thickeners are produced through the process of . There are three or four different types of materials that go into thickeners. At low temperatures, synthetic oil outperforms mineral oil by maintaining proper viscosity and better fluidity than mineral oil. This reaction has a special name: saponification. There is a small range of soaps and non-soaps available with a similar range of pros and cons. See the chart to the left for a full breakdown NLGI grades. It is best to consult OEM guides or speak with your grease manufacturer or distributor to get a recommendation. with 12 HSA and lithium hydroxide. [1] Greases are usually shear-thinning or pseudo-plastic fluids, which means that the viscosity of the fluid is reduced under shear. Greases are typically composed of somewhere in the range of 80% - 90% base oil, 2% - 20% thickener and zero - 15% additives. Simple soaps. They are classified in two main categories: soap and non-soap thickener. Find information on Mobil industrial oils and greases designed to meet the demanding performance needs of your industry. These greases also have no defined melting point and can be used in high-temperature applications. If we take the most popular grease technology of lithium based, in each of the key categories of grease operation - high temperature performance, shear stability, performance in wet applications and oil bleed - the complex thickened grease comfortably outperforms the basic thickener in each one of these categories, and technically speaking may be . Grease Market by Base Oil (Mineral Oil, Synthetic Oil, Bio-based Oil), by Thickener Type (Metallic Soap, Non-Soap, Inorganic), by End-Use Industry (Power Generation, Automotive, Heavy Equipment, Food and Beverage, Chemical Manufacturing, Others): Global Opportunity Analysis and Industry Forecast, 2021-2031 Report Overview Table Of Content These salts are used to thicken mineral oil and create greases. Announces Internal Promotion, Lubricating Specialties Company Purchases VISTONE, Sea-Land Chemical Co. Click here to see our Greases. A simple soap is the reaction product of an organic acid (long-chain or fatty carboxylic acid) and an alkali metal to form an organic salt. Grease thickeners are chemical compounds that are used as one of the key components in formulation of greases. The thickener type is a very important consideration in grease selection. The type and amount of thickener are what determines the grease consistency, or "stiffness.". The reason being, some polyurea thickeners are completely compatible with lithium and lithium complex thickeners, while others are incompatible. Used for over 3000 years, grease is a key lubricant used to operate a variety of machines and bearings. The base oil lubricates, reducing friction between moving surfaces; this is exactly the same role that the base oil plays in a lubricant oil. The metallic hydroxide defines the thickener and other types besides lithium can be used. Grease can also be thickened with non-soap materials. Multipurpose Greases, NLGI Grade: 1, PTFE Grease Thickener. The type of soap thickener will depend on which acids and bases are used in saponification. Cross sections of selected wear marks from . All website features may not be available based upon your cookie consent elections. Grease consistency is measured by a penetrometer which evaluates how far a weighted cone penetrates into a sample of . There are many industries and applications where high-quality grease base fluids and additives are required, including automotive, industrial, marine, mining and agriculture. They are formulated to withstand wide temperature ranges and often provide an extended service life in demanding applications. Clay particles are then dispersed in a fluid lubricant to form grease. Not common. 2). It is dependent on the type of thickener used and the cohesiveness of the oil and thickener of a . Single-row angular contact, split . Clay particles must be activated with a polar material to stabilize the thickener structure. The thickener defines the type of grease. Thickeners impact greases as follows. Clay Thickened Grease Clay Thickened Grease : Grease thickener types Grease thickener types include organic bentonite clay and Inorganic bentonite clay in lubricant grease. Let me try to demystify grease a bit. NLGI viscosity grade is a rating of a grease's consistency. For example, if a heavy equipment operator uses a backhoe to dig into a river, the multipurpose grease can be easily washed off. The end-result is a soap and water mixture. Despite a decline in overall volume, mineral oils contribute the lion's share of base fluids for grease production (86.6%) followed by synthetic (7.42%), semi-synthetic (5.12%) and emerging bio-based fluids (0.87%). Self-aligning ball bearings . For instance, if I wanted to use a grease for a roller bearing in a very high temperature environment which should I choose? Chemical Family: Aluminum Complexes, Aluminum Compounds. Use it in normal bearing applications. Properties of a finished grease are directly related to the nature of the thickener: dropping point, water resistance, mechanical stability, extreme pressure resistance, operating temperature etc. Lockhart Introduces Food Grade Overbased Calcium Sulfonate, The 2nd North American Industrial Lubricants Congress, Sea-Land Chemical Co. Complex soaps are also used widely as grease thickeners. Aluminum complex Good heat and water resistance. So, why is the selection of a grease thickener so important? Greases are classified into two major families: soap and non-soap thickeners. Single-row deep groove, Type S . Polyurea Greases are anorganic, non-soap based thickeners which are alternatives to the commonly known metal- and metalcomplex soap thickeners. Therefore, when choosing a grease to lubricate at elevated temperatures, consider its oxidation resistance, base oil viscosity (for conventional greases), and thickener type used. Non-soap products can also be used to thicken grease. It is recommended to match like-for-like. If you plan to make a switch, it is best to completely drain your equipment before applying new grease. NLGI 2 is about the consistency of peanut butter. However, these charts rarely tell the whole story, even just in terms of the thickener compatibility. The oil is literally being squeezed out of the thickener . The water is removed and the remaining soap is used as a thickener for grease. Some thickeners have short fibers, while others have long fibers. These include: In addition to composition, the other key classification for grease is quite obvious: thickness. Different types of greases are typically formulated with three grease components: base oil, thickener and additives. For a better experience please use a browser other than your current version of Internet Explorer. It is modified bentonite, as a grease additive. Other: Polyurea and clay thickeners are the most used non-soap greases, but there are some other specialty thickeners that are used. Fluoropolymer powders such as PTFE (polytetrafluoroethylene) can be used to thicken lubricating fluids to form grease. Thickener Type The thickener of the grease performs an important jobholding the lubricant in place. The ratios of the ingredients will determine the characteristics of the thickener. High temperature environments may require firmer (higher NLGI grade) greases and certain thickeners with high-temperature properties. Im frequently asked if synthetic oil-based greases are really better than mineral oil-based greases. The aim of the present paper is to unravel the lubrication mechanisms of LiX and PP greases in fretting. (Figure 1) Soap thickeners are Continue Grease compatibility charts (such as the one pictured below) can only help compare the thickener types of greases. Grease manufacturing is a highly complex and detailed process that starts with base oil, thickener and additives. 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 More than 90% of the thickeners used worldwide are soap based. A true grease consists of an oil and/or other fluid lubricant that is mixed with a thickener, typically a soap, to form a solid or semisolid. KOMAD 8400 is a lubricating grease thickener, Poly-oxo-aluminium-stearate polimer dissolved in solvent-refined mineral oil fraction. 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