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classification of lubricants

Graphite, Eg. This standard is intended for use by equipment manufacturers in defining and recommending automotive gear, axle, and manual transmission lubricants. The SAE classification of lubricants is the most widely used system for measuring oil viscosity. - LPG Engine Oil 1.6. - Circulating Oil 2.6. Lubricants are also used as cutting fluids in many industries. Marked with letters GL and a number which indicates the recommended use. Properties of synthetic lubricants and their uses, Significance of relative viscosity at different temperature. On viewing under an electron microscope, the surface of even a mirror polished metallic surface exhibits irregularity. Today’s topic is liquid lubricants. 4. semisolid lubricants: greases, generally consists of a soap emulsified with mineral or vegetable oil. - Aeromotor Engine Oil 1.5. 9. Semisolid lubricants. Establishes a system of viscosity classification for industrial liquid lubricants and related fluids including mineral oils used as lubricants, hydraulic fluids, electrical oils and for other applications. Lubricating oils are further classified as follows: i) Animal & Vegetable oils Before the advent (coming or arrival) of the petroleum industry, they were the most commonly used lubricants. This is a system created and implemented by the Society of Automotive Engineers. Of the three, H1 is by far the most important classification and is typically referred to … Synthetic lubricants are used in turbines, vacuum pumps, and semiconductor devices. - Automatic Transmission Oil 1.10. Mineral oil – these are obtained from petroleum oils containing mostly of hydrocarbons - Refrigerant … - Turbine Oil 2.5. classification of gear lubricants. : Teflon, talc, graphite, molybdenum dissuade. Blended oil– these are mineral oils mixed with vegetable or animal oils in various additives to improve its lubricating property. CLASSIFICATION OF LUBRICANTS ACCORDING TO THEIR PHYSICAL STATE. Boron nitride, tungsten disulfide and polytetrafluorethylene (PTFE) are other solid lubricants. This classification is applicable to all petroleum-base fluid lubricants and to those nonpetroleum materials which may be readily blended to produce fluid lubricants of a desired viscosity, that is, lubricants for bearings, gears, compressor cylinders, hydraulic fluids, etc. Modern lubricants—most often the product of petroleum chemistry— are classified by certain criteria: (1) in terms of physical state, they may be divided into liquid (the most important), plastic, gaseous and solid lubricants. 1.1. Mineral oils (petroleum oils) are products of refining. SJ). General classification of lubricants and this is classifiy in two types Mineral lubricants and Synthetic lubricants. E.g. Classification of Lubricants Liquid Semi Solid Solid LubricantsLubricants Lubricants Eg.Mineral Oil, Eg. Solid lubricants are also used in form of dry powder or as constituents of coatings. Lubricants can be broadly classified, on the basis of their physical state, as follows: (1) Liquid lubricants or lubricating oils; (2) Semi-solid lubricants or greases, and (3) Solid lubricants. Based on its physical states, you can classify lubricants as: Liquid lubricants, which include: Vegetable oil and animal oil. What are motor oil viscosity ratings? Classification. A Semisolid lubricant is obtained by combining lubricating oil with thickening agent. - Machine Oil 2.3. (c) Solid lubricants like graphite, mica. Lubricating oils reduce friction and wear between two moving/sliding metallic surfaces by : greases, wax, Vaseline. The temperature range for these oils is from 32 to 150 degrees F. Group I base oils are solvent-refined, which is a simpler refining process. Last modified: 2012/06/02 by dmitri_kopeliovich, Classification of lubricants by application, Classification of lubricants by additives, Polytetrafluoroethylene (PTFE) as solid lubricant, http://www.irc.wisc.edu/ASHRAE-TC101/programs/Winter%202001%20Rajewski.pdf, http://www.rps.psu.edu/sep99/flowerpower.html, http://www1.eere.energy.gov/vehiclesandfuels/pdfs/deer_2003/session3/2003_deer_perez.pdf, http://www.hort.purdue.edu/newcrop/proceedings1999/pdf/v4-247.pdf, http://cleanerproduction.curtin.edu.au/resources/training/sme_a3.pdf, http://www.plantsciences.iastate.edu/presentation/biorenew.pdf, Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. - Compressor Oil 2.7. The peaks are called asperities and the valleys are called pits. Penetrating lubricants have low viscosity, and these are not a long-lasting one. These are further classified on basis of their origin as 27.2 CLASSIFICATION OF LUBRICANTS. The only particular purpose of that is infiltrating the little cracks between surfaces, adding lubrication and then breaking up rust. Lubricants can also be classified b… The Society of Automotive Engineers (SAE) developed a scale for both engine (motor oil grades) and transmission oils. Rationale: The SAE J306 Standard defines the limits for a classification of automotive gear lubricants in rheological terms. : olive oil, palm oil, castor oil, cottonseed oil etc 2. solid lubricants: all lubricants in solid form, including powders, coatings and composites (graphite, polytetrafluorethylene, Molybdenum disulfide, etc.) Properties. 27.2.1 Lubricating oils. How is viscosity rated? Liquid Lubricants Welcome to 17th lecture of video course on tribology. - CNG Engine Oil 1.7. Classification of Lubricants. Solid lubricants are mainly used as additives to oils and greases. 1. (2) In terms of chemical composition, several significantly different chemical types of liquid lubricants are used. These letters are followed by second letter that indicates lubricant performance (e.g. They have good … Synthetic oils these are designed to serve a specific purpose. Blended oil, doped oil, or compound oil. In my previous lecture we understood solid and semi-solid lubricants the merits and demerits. Liquid lubricants; These are further classified on basis of … - Hydraulic Oil 2.2. (b) Semi-solid lubricants like grease. Mineral oil from petroleum. GL-1 – oil for gearboxes operating at low friction speeds. Your email address will not be published. substances which reduce friction and wear between two surfaces Molybdenum is used as a paint pigment and as a catalyst. The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. - Industrial Gear Oil 2.4. Modern lubricants—most often the product of petroleum chemistry— are classified by certain criteria: (1) in terms of physical state, they may be divided into liquid (the most important), plastic, gaseous and solid lubricants. Mechanism of lubrication. These long chains are hard to squeeze out from between surfaces, making oils useful as a slippery barrier between them. E.g. Solid lubricants e.g., graphite, are in the form of powders and can be applied on machine surfaces where they orient themselves parallel to the surface. - Diesel-electric locomotive Engine Oil 1.4. Classification of Lubricants 2. Solid lubricants LUBRICANTS. The classification of the lubricants is they are classified on basis of their physical state as-Solid lubricants; E.g. Essentially, ISO 6743-6 serves as the classification system and ISO 12925-1 defines what those classifications are in terms of testing. Semi-solid lubricants; E.g. Vegetable oil – these are obtained from plants. to top Save my name, email, and website in this browser for the next time I comment. Animal oil – these are obtained from animals like fishes etc - Automotive Gear Oil 2. : paraffin base oils and naphthalene base oils The usual method for kinematic-viscosity determination is that specified in ISO 3104. Classification of Lubricants 3. E.g. :-Silica gel, Grease, Vaseline, etc. The classification adopted in the United States and issued by the (American Petroleum Institute), is divided into two groups: "S" for petrol driven engines; "C" for diesel engines. Oils are thin liquids made of long polymer chains, with additives for various extra properties. Food grade lubricants for packaging machinery that will contain food or beverages must now be produced on machines and equipment that use approved NSF certified lubricants. Standard ISO 6743-9 “lubricants, industrial oils and related products (class L) — classification — part 9: family X (greases)”, first released in 1987 by the International Organization for Standardization, establishes a detailed classification of greases used for the lubrication of equipment, components of machines, vehicles, etc. Synthetic Lubricants. The classification of the lubricants is they are classified on basis of their physical state as-, E.g. (2) In terms of chemical composition, several significantly different chemical types of liquid lubricants are used. ISO 3448 is used as the viscosity classification system. Common additives include antioxidants to keep the oil from oxidizing, corrosion inhibitors to prevent parts from corroding, and detergents to keep deposits from forming. Our more than 600 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry. Additives improve the resistance to oxidation, protection against rust, and the congelation temperature is improved with additives. Classification of lubricants by application Engine oils Gear oils Hydraulic oils Cutting fluids (coolants) Way lubricants Compressor oils Quenching and heat transfer oils Rust protection oils Transformer oils (insulating oils) Turbine oils Chain lubricants Wire rope lubricants Classification of lubricants by additives : fish oils, tallow, lard - Diesel Engine Oil 1.2. Petroleum Petroleum Oil, Molybdenum jellies Vegetable Oil etc Disulphide etc. Lubricants are classified in several ways; these could be liquid, semisolid (greases), and solids such as graphite, molybdenum disulfide, boron nitride, tungsten disulfide, and polytetrafluoroethylene. - 2-cycle Motor Engine Oil 1.9. Solid Semi-solid Liquid SOLID LUBRICANTS. Lubricants are largely used for automobiles, heavy industries, industries, and vessels. Grease presented by:- Abhishek Raj 17. - Gasoline Engine Oil 1.3. Today, we are going to discuss most popularly classification of lubricant or class of the lubricant which is a liquid lubricant. A good lubricant generally possesses the following characteristics: Solid lubricants. E.g. Required fields are marked *. : silicones, dibasic acid esters, organic phosphate esters, halogenated hydrocarbons poly alkylene glycols and their derivatives. E.g. Mineral lubricants Fluid lubricants (Oils) Mineral fluid lubricants are based on mineral oils. : Teflon, talc, graphite, molybdenum dissuade. Classification of API lubricants for gearboxes and main drives. Lubricants can be classified by their state into following groups: 1. liquid lubricants: all liquid lubricants, including mineral, natural, synthetic oils, emulsions, etc. 3. gaseous lubricants: typically its air, but can be any other gas. Abstract. 2.1. Oils come in different “weights” (such as 5W … The latest revision of ISO 6743-6 defines nine categories of enclosed gear lubricants - CKB, CKC, CKD, CKE, CKSMP, - Motorcycle Engine Oil 1.8. As like as oil and grease, there are many types of penetrating lubricants. Graphite and molybdenum disulfide particles are common Solid lubricants. Liquid lubricants are used in medicines. This is why they are the cheapest base oils on the market. Your email address will not be published. THE British Standard 4231 : 1967 “Viscosity Classification for Industrial Liquid Lubricants” together with BS 4475 : 1969 “Specification for Straight Mineral Lubricating Oils” constitute a real step forward for the lubrication world. (a) Liquid Lubricants like mobile oil, gear oil, etc. Semi-Solid Lubricants: These are neither solid nor liquid. Group I base oils are classified as less than 90 percent saturates, greater than 0.03 percent sulfur and with a viscosity-index range of 80 to 120. 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