classification of lubricants

: fish oils, tallow, lard Your email address will not be published. Based on its physical states, you can classify lubricants as: Liquid lubricants, which include: Vegetable oil and animal oil. Solid Semi-solid Liquid SOLID LUBRICANTS. 3. gaseous lubricants: typically its air, but can be any other gas. This is a system created and implemented by the Society of Automotive Engineers. 27.2.1 Lubricating oils. to top 1.1. Semi-Solid Lubricants: These are neither solid nor liquid. 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. Mineral oil – these are obtained from petroleum oils containing mostly of hydrocarbons Lubricants can be classified by their state into following groups: 1. liquid lubricants: all liquid lubricants, including mineral, natural, synthetic oils, emulsions, etc. 9. - Automatic Transmission Oil 1.10. Semisolid lubricants. Graphite and molybdenum disulfide particles are common Solid lubricants. - Diesel-electric locomotive Engine Oil 1.4. What are motor oil viscosity ratings? They have good … A Semisolid lubricant is obtained by combining lubricating oil with thickening agent. - Aeromotor Engine Oil 1.5. - CNG Engine Oil 1.7. Semi-solid lubricants; E.g. Marked with letters GL and a number which indicates the recommended use. Petroleum Petroleum Oil, Molybdenum jellies Vegetable Oil etc Disulphide etc. Classification of Lubricants. classification of gear lubricants. - Compressor Oil 2.7. - Industrial Gear Oil 2.4. In my previous lecture we understood solid and semi-solid lubricants the merits and demerits. 27.2 CLASSIFICATION OF LUBRICANTS. Lubricants are also used as cutting fluids in many industries. General classification of lubricants and this is classifiy in two types Mineral lubricants and Synthetic lubricants. 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. 1. (a) Liquid Lubricants like mobile oil, gear oil, etc. Liquid lubricants are used in medicines. 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. Mineral oils (petroleum oils) are products of refining. These letters are followed by second letter that indicates lubricant performance (e.g. 2. solid lubricants: all lubricants in solid form, including powders, coatings and composites (graphite, polytetrafluorethylene, Molybdenum disulfide, etc.) - Machine Oil 2.3. : silicones, dibasic acid esters, organic phosphate esters, halogenated hydrocarbons poly alkylene glycols and their derivatives. - Circulating Oil 2.6. - Turbine Oil 2.5. Essentially, ISO 6743-6 serves as the classification system and ISO 12925-1 defines what those classifications are in terms of testing. 2.1. The usual method for kinematic-viscosity determination is that specified in ISO 3104. Save my name, email, and website in this browser for the next time I comment. Synthetic lubricants are used in turbines, vacuum pumps, and semiconductor devices. Today, we are going to discuss most popularly classification of lubricant or class of the lubricant which is a liquid lubricant. Abstract. Liquid Lubricants Welcome to 17th lecture of video course on tribology. Classification of Lubricants 2. Vegetable oil – these are obtained from plants. GL-1 – oil for gearboxes operating at low friction speeds. 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. substances which reduce friction and wear between two surfaces E.g. 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. - Refrigerant … The Society of Automotive Engineers (SAE) developed a scale for both engine (motor oil grades) and transmission oils. Lubricants are largely used for automobiles, heavy industries, industries, and vessels. Molybdenum is used as a paint pigment and as a catalyst. Synthetic Lubricants. (2) In terms of chemical composition, several significantly different chemical types of liquid lubricants are used. - Hydraulic Oil 2.2. 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. E.g. Penetrating lubricants have low viscosity, and these are not a long-lasting one. As like as oil and grease, there are many types of penetrating lubricants. 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. E.g. The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. The only particular purpose of that is infiltrating the little cracks between surfaces, adding lubrication and then breaking up rust. Solid lubricants are mainly used as additives to oils and greases. ISO 3448 is used as the viscosity classification system. The latest revision of ISO 6743-6 defines nine categories of enclosed gear lubricants - CKB, CKC, CKD, CKE, CKSMP, How is viscosity rated? - Gasoline Engine Oil 1.3. : greases, wax, Vaseline. 4. semisolid lubricants: greases, generally consists of a soap emulsified with mineral or vegetable oil. Additives improve the resistance to oxidation, protection against rust, and the congelation temperature is improved with additives. Classification of Lubricants 3. SJ). 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. Lubricants can also be classified b… Mineral lubricants Fluid lubricants (Oils) Mineral fluid lubricants are based on mineral oils. The peaks are called asperities and the valleys are called pits. Properties of synthetic lubricants and their uses, Significance of relative viscosity at different temperature. Solid lubricants LUBRICANTS. 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. The classification of the lubricants is they are classified on basis of their physical state as-, E.g. Your email address will not be published. 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. Synthetic oils these are designed to serve a specific purpose. Oils come in different “weights” (such as 5W … - LPG Engine Oil 1.6. (b) Semi-solid lubricants like grease. Required fields are marked *. 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. Mineral oil from petroleum. - Motorcycle Engine Oil 1.8. :-Silica gel, Grease, Vaseline, etc. These are further classified on basis of their origin as The SAE classification of lubricants is the most widely used system for measuring oil viscosity. - Automotive Gear Oil 2. Classification. Rationale: The SAE J306 Standard defines the limits for a classification of automotive gear lubricants in rheological terms. Classification of API lubricants for gearboxes and main drives. Properties. E.g. Animal oil – these are obtained from animals like fishes etc : Teflon, talc, graphite, molybdenum dissuade. Blended oil, doped oil, or compound oil. Boron nitride, tungsten disulfide and polytetrafluorethylene (PTFE) are other solid lubricants. Oils are thin liquids made of long polymer chains, with additives for various extra properties. Mechanism of lubrication. 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 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. (2) In terms of chemical composition, several significantly different chemical types of liquid lubricants are used. Liquid lubricants; These are further classified on basis of … : olive oil, palm oil, castor oil, cottonseed oil etc 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. 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. The classification of the lubricants is they are classified on basis of their physical state as-Solid lubricants; E.g. Graphite, Eg. - 2-cycle Motor Engine Oil 1.9. Today’s topic is liquid lubricants. : Teflon, talc, graphite, molybdenum dissuade. 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. Of the three, H1 is by far the most important classification and is typically referred to … 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. A good lubricant generally possesses the following characteristics: Grease presented by:- Abhishek Raj 17. These long chains are hard to squeeze out from between surfaces, making oils useful as a slippery barrier between them. E.g. On viewing under an electron microscope, the surface of even a mirror polished metallic surface exhibits irregularity. Solid lubricants. (c) Solid lubricants like graphite, mica. 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