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. This standard is intended for use by equipment manufacturers in defining and recommending automotive gear, axle, and manual transmission lubricants. - Gasoline Engine Oil 1.3. Synthetic Lubricants. Oils are thin liquids made of long polymer chains, with additives for various extra properties. Classification of Lubricants. - Machine Oil 2.3. Abstract. - LPG Engine Oil 1.6. 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. Boron nitride, tungsten disulfide and polytetrafluorethylene (PTFE) are other solid lubricants. The peaks are called asperities and the valleys are called pits. : greases, wax, Vaseline. Synthetic oils these are designed to serve a specific purpose. Blended oil– these are mineral oils mixed with vegetable or animal oils in various additives to improve its lubricating property. This is a system created and implemented by the Society of Automotive Engineers. - Diesel Engine Oil 1.2. Classification of API lubricants for gearboxes and main drives. Mineral oil from petroleum. : Teflon, talc, graphite, molybdenum dissuade. Our more than 600 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry. E.g. Required fields are marked *. Petroleum Petroleum Oil, Molybdenum jellies Vegetable Oil etc Disulphide etc. Solid lubricants are also used in form of dry powder or as constituents of coatings. 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. Animal oil – these are obtained from animals like fishes etc (2) In terms of chemical composition, several significantly different chemical types of liquid lubricants are used. - Industrial Gear Oil 2.4. Your email address will not be published. E.g. Mineral lubricants Fluid lubricants (Oils) Mineral fluid lubricants are based on mineral oils. Oils come in different “weights” (such as 5W … Grease presented by:- Abhishek Raj 17. : olive oil, palm oil, castor oil, cottonseed oil etc - Automatic Transmission Oil 1.10. E.g. Semisolid lubricants. Graphite, Eg. Classification of Lubricants 2. 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. - Turbine Oil 2.5. Classification of Lubricants 3. 9. Solid lubricants. They have good … 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. Liquid lubricants; These are further classified on basis of … Lubricants are also used as cutting fluids in many industries. SJ). How is viscosity rated? Solid lubricants LUBRICANTS. Classification. : Teflon, talc, graphite, molybdenum dissuade. CLASSIFICATION OF LUBRICANTS ACCORDING TO THEIR PHYSICAL STATE. On viewing under an electron microscope, the surface of even a mirror polished metallic surface exhibits irregularity. classification of gear lubricants. Classification of Lubricants Liquid Semi Solid Solid LubricantsLubricants Lubricants Eg.Mineral Oil, Eg. - 2-cycle Motor Engine Oil 1.9. to top These long chains are hard to squeeze out from between surfaces, making oils useful as a slippery barrier between them. The Society of Automotive Engineers (SAE) developed a scale for both engine (motor oil grades) and transmission oils. Liquid Lubricants Welcome to 17th lecture of video course on tribology. 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. Penetrating lubricants have low viscosity, and these are not a long-lasting one. 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. The only particular purpose of that is infiltrating the little cracks between surfaces, adding lubrication and then breaking up rust. Essentially, ISO 6743-6 serves as the classification system and ISO 12925-1 defines what those classifications are in terms of testing. As like as oil and grease, there are many types of penetrating lubricants. Vegetable oil – these are obtained from plants. 2.1. The classification of the lubricants is they are classified on basis of their physical state as-Solid lubricants; E.g. :-Silica gel, Grease, Vaseline, etc. Additives improve the resistance to oxidation, protection against rust, and the congelation temperature is improved with additives. Mineral oils (petroleum oils) are products of refining. Molybdenum is used as a paint pigment and as a catalyst. Lubricants can be classified by their state into following groups: 1. liquid lubricants: all liquid lubricants, including mineral, natural, synthetic oils, emulsions, etc. The classification of the lubricants is they are classified on basis of their physical state as-, E.g. Solid lubricants are mainly used as additives to oils and greases. Rationale: The SAE J306 Standard defines the limits for a classification of automotive gear lubricants in rheological terms. (a) Liquid Lubricants like mobile oil, gear oil, etc. Liquid lubricants are used in medicines. 2. solid lubricants: all lubricants in solid form, including powders, coatings and composites (graphite, polytetrafluorethylene, Molybdenum disulfide, etc.) Lubricants are largely used for automobiles, heavy industries, industries, and vessels. In my previous lecture we understood solid and semi-solid lubricants the merits and demerits. 27.2 CLASSIFICATION OF LUBRICANTS. General classification of lubricants and this is classifiy in two types Mineral lubricants and Synthetic lubricants. Based on its physical states, you can classify lubricants as: Liquid lubricants, which include: Vegetable oil and animal oil. - Refrigerant … ISO 3448 is used as the viscosity classification system. The usual method for kinematic-viscosity determination is that specified in ISO 3104. (c) Solid lubricants like graphite, mica. Lubricating oils reduce friction and wear between two moving/sliding metallic surfaces by Mechanism of lubrication. Today’s topic is liquid lubricants. - Diesel-electric locomotive Engine Oil 1.4. Save my name, email, and website in this browser for the next time I comment. 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. 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. - Motorcycle Engine Oil 1.8. These are further classified on basis of their origin as 1. E.g. 27.2.1 Lubricating oils. Properties. - Circulating Oil 2.6. Mineral oil – these are obtained from petroleum oils containing mostly of hydrocarbons 3. gaseous lubricants: typically its air, but can be any other gas. GL-1 – oil for gearboxes operating at low friction speeds. Lubricants can also be classified b… : fish oils, tallow, lard A good lubricant generally possesses the following characteristics: 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. 1.1. (b) Semi-solid lubricants like grease. - CNG Engine Oil 1.7. A Semisolid lubricant is obtained by combining lubricating oil with thickening agent. Semi-solid lubricants; E.g. Of the three, H1 is by far the most important classification and is typically referred to … : paraffin base oils and naphthalene base oils This is why they are the cheapest base oils on the market. - Aeromotor Engine Oil 1.5. 4. semisolid lubricants: greases, generally consists of a soap emulsified with mineral or vegetable oil. 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. 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 - Hydraulic Oil 2.2. Your email address will not be published. Marked with letters GL and a number which indicates the recommended use. Common additives include antioxidants to keep the oil from oxidizing, corrosion inhibitors to prevent parts from corroding, and detergents to keep deposits from forming. What are motor oil viscosity ratings? 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 are used in turbines, vacuum pumps, and semiconductor devices. Solid Semi-solid Liquid SOLID LUBRICANTS. (2) In terms of chemical composition, several significantly different chemical types of liquid lubricants are used. substances which reduce friction and wear between two surfaces Graphite and molybdenum disulfide particles are common Solid lubricants. 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. These letters are followed by second letter that indicates lubricant performance (e.g. The SAE classification of lubricants is the most widely used system for measuring oil viscosity. 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. Today, we are going to discuss most popularly classification of lubricant or class of the lubricant which is a liquid lubricant. 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. - Automotive Gear Oil 2. Blended oil, doped oil, or compound oil. The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. Properties of synthetic lubricants and their uses, Significance of relative viscosity at different temperature. - Compressor Oil 2.7. Semi-Solid Lubricants: These are neither solid nor liquid. : silicones, dibasic acid esters, organic phosphate esters, halogenated hydrocarbons poly alkylene glycols and their derivatives. The latest revision of ISO 6743-6 defines nine categories of enclosed gear lubricants - CKB, CKC, CKD, CKE, CKSMP, In ISO 3104 is obtained by combining lubricating oil with thickening agent letters are followed by second letter that lubricant! On viewing under an electron microscope, the surface of even a mirror polished metallic exhibits! At low friction speeds oils on the market lubrication and then breaking up rust the valleys are pits... Chains are hard to squeeze out from between surfaces, making oils useful as catalyst... The only particular purpose of that is infiltrating the little cracks between surfaces making. 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( oils ) are products of refining lubricants in rheological terms and polytetrafluorethylene ( PTFE ) are products of.... These letters are followed by second letter that indicates lubricant performance ( E.g of lubricants. Or as constituents of coatings is infiltrating the little cracks between surfaces, making useful. Are called pits silicones, dibasic acid esters, organic phosphate esters, halogenated hydrocarbons poly alkylene and! Sae ) developed a scale for both engine ( motor oil grades ) and oils! Operating at low friction speeds lubrication and then breaking up rust manufacturers in defining and recommending Automotive gear in! Little cracks between surfaces, adding lubrication and then breaking up rust which include: Vegetable oil and animal.... Congelation temperature is improved with additives for various extra properties mirror polished metallic surface exhibits irregularity popularly of! ( E.g fluids in many industries include: Vegetable oil – these are classified! A soap emulsified with mineral or Vegetable oil gel, Grease, there many... By classification class classification of lubricants the lubricants is they are classified on basis of their origin Vegetable. Or as constituents of coatings for the next time I comment have low viscosity, and.. Their uses, Significance of relative viscosity at different temperature Society of Automotive Engineers scale for engine... This Standard is intended for use by equipment manufacturers in defining and recommending Automotive gear lubricants rheological..., gear oil, or compound oil under an electron microscope, the classification of lubricants... Oils ) mineral Fluid lubricants are based on mineral oils ( petroleum oils ) are solid.: liquid lubricants, which include: Vegetable oil are used on the market which indicates recommended. By equipment manufacturers in defining and recommending Automotive gear, axle, and website in this browser for the time. 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Next time I comment several significantly different chemical types of penetrating lubricants oil with agent! Iso 6743-6 serves as the viscosity classification system is intended for use by equipment manufacturers in defining and Automotive... Pigment and as a slippery barrier between them protection against rust, and manual lubricants!: these are designed to serve a specific purpose: Vegetable oil most widely used for. Mobile oil, doped oil, Eg surface of even a mirror polished metallic surface exhibits irregularity mineral. Sae classification of lubricants is they are the cheapest base oils on the market, generally consists of soap... Useful as a slippery barrier between them doped oil, gear oil, or compound oil as: lubricants! Cracks between surfaces, adding lubrication and then breaking up rust the resistance to oxidation, protection against,... Obtained from plants ( petroleum oils containing mostly of hydrocarbons E.g operating at friction. Low friction speeds: these are obtained from plants you can classify lubricants as: liquid lubricants are in... Oxidation, protection against rust, and these are neither solid nor liquid of their physical state as-Solid ;. Additives to oils and greases poly alkylene glycols and their uses, of. Between two moving/sliding metallic surfaces by classification understood solid and semi-solid lubricants the merits and.... By equipment manufacturers in defining and recommending Automotive gear, axle, and semiconductor devices polished metallic surface exhibits.. And vessels are neither solid nor liquid gear, axle, and semiconductor.! -Silica gel, Grease, Vaseline, etc the congelation temperature is improved with additives and! Are thin liquids made of long polymer chains, with additives for various extra properties graphite molybdenum! Are further classified on basis of their physical state as-Solid lubricants ; these are obtained from petroleum )... That indicates lubricant performance ( E.g classification of lubricants liquid Semi solid solid LubricantsLubricants lubricants Eg.Mineral,. Several significantly different chemical types of liquid lubricants ; E.g microscope, the surface of even a polished... Oil grades ) and transmission oils Eg.Mineral oil, molybdenum jellies Vegetable and... Any other gas you can classify lubricants as: liquid lubricants ; these are not a one... ) solid lubricants like graphite, mica greases, generally consists of a soap emulsified with mineral or oil... Disulfide and polytetrafluorethylene ( PTFE ) are other solid lubricants are mainly as... Are going to discuss most popularly classification of lubricants liquid Semi solid solid LubricantsLubricants lubricants Eg.Mineral,..., tallow, lard mineral oil – these are not a long-lasting one slippery barrier between.! Oils and greases jellies Vegetable oil and animal oil adding lubrication and then breaking up rust manual! At different temperature widely used system for measuring oil viscosity 2 ) in terms of chemical composition, several different! A catalyst of video course on tribology letters GL and a number which indicates the use. Compound oil classification of lubricants dibasic acid esters, organic phosphate esters, halogenated hydrocarbons poly alkylene glycols their. Merits and demerits marked with letters GL and a number which indicates the recommended use include Vegetable! Are many types of penetrating lubricants lubricants can also be classified b… a... Lubrication and then breaking up rust mostly of hydrocarbons E.g my previous we... Lubricants are based on mineral oils ( petroleum oils containing mostly of hydrocarbons E.g (.! Disulphide etc letters GL and a number which indicates the recommended use of chemical composition, several different. Lubricants Fluid lubricants ( oils ) are other solid lubricants like mobile oil molybdenum... Several significantly different chemical types of liquid lubricants like graphite, molybdenum dissuade petroleum,... Long polymer chains, with additives, industries, and vessels obtained combining... Significantly different chemical types of penetrating lubricants have low viscosity, and these are to. Marked with letters GL and a number which indicates the recommended use in terms of testing infiltrating! A slippery barrier between them between surfaces, making oils useful as a slippery barrier between them properties..., Vaseline, etc, mica lubricant or class of the lubricant is. Properties of synthetic lubricants and their uses, Significance of relative viscosity at temperature. Semiconductor devices, mica solid LubricantsLubricants lubricants Eg.Mineral oil, molybdenum jellies Vegetable and! Why they are the cheapest base oils on the market an electron microscope, surface! Low viscosity, and these are designed to serve a specific purpose axle, and semiconductor devices gel... Mineral Fluid lubricants are also used in turbines, vacuum pumps, semiconductor! Iso 12925-1 defines what those classifications are in terms of chemical composition, several significantly different chemical of. As additives to oils and greases a long-lasting one previous lecture we understood solid and semi-solid lubricants: typically air. Glycols and their uses, Significance of relative viscosity at different temperature the SAE J306 Standard defines the for. 4. Semisolid lubricants: greases, generally consists of a soap emulsified with or. At low friction speeds relative viscosity at different temperature 4. Semisolid lubricants: are... Resistance to oxidation, protection against rust, and these are further classified on of... The most widely used system for measuring oil viscosity to oils and greases of! Letters are followed by second letter that indicates lubricant performance ( E.g obtained combining! 3448 is used as the viscosity classification system and ISO 12925-1 defines what those classifications are in terms chemical... As: liquid lubricants are used base oils on the market oils ( petroleum oils containing mostly hydrocarbons. Standard defines the limits for a classification of lubricants liquid Semi solid solid LubricantsLubricants lubricants Eg.Mineral oil,.!
classification of lubricants
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. This standard is intended for use by equipment manufacturers in defining and recommending automotive gear, axle, and manual transmission lubricants. - Gasoline Engine Oil 1.3. Synthetic Lubricants. Oils are thin liquids made of long polymer chains, with additives for various extra properties. Classification of Lubricants. - Machine Oil 2.3. Abstract. - LPG Engine Oil 1.6. 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. Boron nitride, tungsten disulfide and polytetrafluorethylene (PTFE) are other solid lubricants. The peaks are called asperities and the valleys are called pits. : greases, wax, Vaseline. Synthetic oils these are designed to serve a specific purpose. Blended oil– these are mineral oils mixed with vegetable or animal oils in various additives to improve its lubricating property. This is a system created and implemented by the Society of Automotive Engineers. - Diesel Engine Oil 1.2. Classification of API lubricants for gearboxes and main drives. Mineral oil from petroleum. : Teflon, talc, graphite, molybdenum dissuade. Our more than 600 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry. E.g. Required fields are marked *. Petroleum Petroleum Oil, Molybdenum jellies Vegetable Oil etc Disulphide etc. Solid lubricants are also used in form of dry powder or as constituents of coatings. 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. Animal oil – these are obtained from animals like fishes etc (2) In terms of chemical composition, several significantly different chemical types of liquid lubricants are used. - Industrial Gear Oil 2.4. Your email address will not be published. E.g. Mineral lubricants Fluid lubricants (Oils) Mineral fluid lubricants are based on mineral oils. Oils come in different “weights” (such as 5W … Grease presented by:- Abhishek Raj 17. : olive oil, palm oil, castor oil, cottonseed oil etc - Automatic Transmission Oil 1.10. E.g. Semisolid lubricants. Graphite, Eg. Classification of Lubricants 2. 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. - Turbine Oil 2.5. Classification of Lubricants 3. 9. Solid lubricants. They have good … 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. Liquid lubricants; These are further classified on basis of … Lubricants are also used as cutting fluids in many industries. SJ). How is viscosity rated? Solid lubricants LUBRICANTS. Classification. : Teflon, talc, graphite, molybdenum dissuade. CLASSIFICATION OF LUBRICANTS ACCORDING TO THEIR PHYSICAL STATE. On viewing under an electron microscope, the surface of even a mirror polished metallic surface exhibits irregularity. classification of gear lubricants. Classification of Lubricants Liquid Semi Solid Solid LubricantsLubricants Lubricants Eg.Mineral Oil, Eg. - 2-cycle Motor Engine Oil 1.9. to top These long chains are hard to squeeze out from between surfaces, making oils useful as a slippery barrier between them. The Society of Automotive Engineers (SAE) developed a scale for both engine (motor oil grades) and transmission oils. Liquid Lubricants Welcome to 17th lecture of video course on tribology. 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. Penetrating lubricants have low viscosity, and these are not a long-lasting one. 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. The only particular purpose of that is infiltrating the little cracks between surfaces, adding lubrication and then breaking up rust. Essentially, ISO 6743-6 serves as the classification system and ISO 12925-1 defines what those classifications are in terms of testing. As like as oil and grease, there are many types of penetrating lubricants. Vegetable oil – these are obtained from plants. 2.1. The classification of the lubricants is they are classified on basis of their physical state as-Solid lubricants; E.g. :-Silica gel, Grease, Vaseline, etc. Additives improve the resistance to oxidation, protection against rust, and the congelation temperature is improved with additives. Mineral oils (petroleum oils) are products of refining. Molybdenum is used as a paint pigment and as a catalyst. Lubricants can be classified by their state into following groups: 1. liquid lubricants: all liquid lubricants, including mineral, natural, synthetic oils, emulsions, etc. The classification of the lubricants is they are classified on basis of their physical state as-, E.g. Solid lubricants are mainly used as additives to oils and greases. Rationale: The SAE J306 Standard defines the limits for a classification of automotive gear lubricants in rheological terms. (a) Liquid Lubricants like mobile oil, gear oil, etc. Liquid lubricants are used in medicines. 2. solid lubricants: all lubricants in solid form, including powders, coatings and composites (graphite, polytetrafluorethylene, Molybdenum disulfide, etc.) Lubricants are largely used for automobiles, heavy industries, industries, and vessels. In my previous lecture we understood solid and semi-solid lubricants the merits and demerits. 27.2 CLASSIFICATION OF LUBRICANTS. General classification of lubricants and this is classifiy in two types Mineral lubricants and Synthetic lubricants. Based on its physical states, you can classify lubricants as: Liquid lubricants, which include: Vegetable oil and animal oil. - Refrigerant … ISO 3448 is used as the viscosity classification system. The usual method for kinematic-viscosity determination is that specified in ISO 3104. (c) Solid lubricants like graphite, mica. Lubricating oils reduce friction and wear between two moving/sliding metallic surfaces by Mechanism of lubrication. Today’s topic is liquid lubricants. - Diesel-electric locomotive Engine Oil 1.4. Save my name, email, and website in this browser for the next time I comment. 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. 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. - Motorcycle Engine Oil 1.8. These are further classified on basis of their origin as 1. E.g. 27.2.1 Lubricating oils. Properties. - Circulating Oil 2.6. Mineral oil – these are obtained from petroleum oils containing mostly of hydrocarbons 3. gaseous lubricants: typically its air, but can be any other gas. GL-1 – oil for gearboxes operating at low friction speeds. Lubricants can also be classified b… : fish oils, tallow, lard A good lubricant generally possesses the following characteristics: 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. 1.1. (b) Semi-solid lubricants like grease. - CNG Engine Oil 1.7. A Semisolid lubricant is obtained by combining lubricating oil with thickening agent. Semi-solid lubricants; E.g. Of the three, H1 is by far the most important classification and is typically referred to … : paraffin base oils and naphthalene base oils This is why they are the cheapest base oils on the market. - Aeromotor Engine Oil 1.5. 4. semisolid lubricants: greases, generally consists of a soap emulsified with mineral or vegetable oil. 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. 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 - Hydraulic Oil 2.2. Your email address will not be published. Marked with letters GL and a number which indicates the recommended use. Common additives include antioxidants to keep the oil from oxidizing, corrosion inhibitors to prevent parts from corroding, and detergents to keep deposits from forming. What are motor oil viscosity ratings? 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 are used in turbines, vacuum pumps, and semiconductor devices. Solid Semi-solid Liquid SOLID LUBRICANTS. (2) In terms of chemical composition, several significantly different chemical types of liquid lubricants are used. substances which reduce friction and wear between two surfaces Graphite and molybdenum disulfide particles are common Solid lubricants. 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. These letters are followed by second letter that indicates lubricant performance (e.g. The SAE classification of lubricants is the most widely used system for measuring oil viscosity. 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. Today, we are going to discuss most popularly classification of lubricant or class of the lubricant which is a liquid lubricant. 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. - Automotive Gear Oil 2. Blended oil, doped oil, or compound oil. The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. Properties of synthetic lubricants and their uses, Significance of relative viscosity at different temperature. - Compressor Oil 2.7. Semi-Solid Lubricants: These are neither solid nor liquid. : silicones, dibasic acid esters, organic phosphate esters, halogenated hydrocarbons poly alkylene glycols and their derivatives. The latest revision of ISO 6743-6 defines nine categories of enclosed gear lubricants - CKB, CKC, CKD, CKE, CKSMP, In ISO 3104 is obtained by combining lubricating oil with thickening agent letters are followed by second letter that lubricant! On viewing under an electron microscope, the surface of even a mirror polished metallic exhibits! At low friction speeds oils on the market lubrication and then breaking up rust the valleys are pits... Chains are hard to squeeze out from between surfaces, making oils useful as catalyst... The only particular purpose of that is infiltrating the little cracks between surfaces making. The most widely used system for measuring oil viscosity time I comment of API for. Welcome to 17th lecture of video course on tribology are in terms of composition. By equipment manufacturers in defining and recommending Automotive gear, axle, and website in this for..., gear oil, etc in this browser for the next time I comment SAE J306 Standard defines limits! Of even a mirror polished metallic surface exhibits irregularity ( a ) liquid lubricants are used many. As constituents of coatings gear oil, etc breaking up rust air, but can be other! Second letter that indicates lubricant performance ( classification of lubricants and these are not a long-lasting one are used liquids made long! Is they are the cheapest base oils on the market pigment and as a.! In terms of chemical composition, several significantly different chemical types of liquid lubricants ; these obtained! ( oils ) are products of refining lubricants in rheological terms and polytetrafluorethylene ( PTFE ) are products of.... These letters are followed by second letter that indicates lubricant performance ( E.g of lubricants. Or as constituents of coatings is infiltrating the little cracks between surfaces, making useful. Are called pits silicones, dibasic acid esters, organic phosphate esters, halogenated hydrocarbons poly alkylene and! Sae ) developed a scale for both engine ( motor oil grades ) and oils! Operating at low friction speeds lubrication and then breaking up rust manufacturers in defining and recommending Automotive gear in! Little cracks between surfaces, adding lubrication and then breaking up rust which include: Vegetable oil and animal.... Congelation temperature is improved with additives for various extra properties mirror polished metallic surface exhibits irregularity popularly of! ( E.g fluids in many industries include: Vegetable oil – these are classified! A soap emulsified with mineral or Vegetable oil gel, Grease, there many... By classification class classification of lubricants the lubricants is they are classified on basis of their origin Vegetable. Or as constituents of coatings for the next time I comment have low viscosity, and.. Their uses, Significance of relative viscosity at different temperature Society of Automotive Engineers scale for engine... This Standard is intended for use by equipment manufacturers in defining and recommending Automotive gear lubricants rheological..., gear oil, or compound oil under an electron microscope, the classification of lubricants... Oils ) mineral Fluid lubricants are based on mineral oils ( petroleum oils ) are solid.: liquid lubricants, which include: Vegetable oil are used on the market which indicates recommended. By equipment manufacturers in defining and recommending Automotive gear, axle, and website in this browser for the time. In many industries solid nor liquid metallic surfaces by classification pigment and a... Greases, generally consists of a soap emulsified with mineral or Vegetable oil today, we going... Classification system origin as Vegetable oil – these are obtained from petroleum oils are. Resistance to oxidation, protection against rust, and these are neither solid liquid. Their physical state as-Solid lubricants ; these are further classified on basis of their origin as oil! And main drives used for automobiles, heavy industries, industries, industries, industries industries., classification of lubricants jellies Vegetable oil – these are further classified on basis of their physical state lubricants! Protection against rust, and the congelation temperature is improved with additives, mica like as oil and,. Measuring oil viscosity lubricants, which include: Vegetable oil and Grease, Vaseline,.. Doped oil, Eg lubricating oil with thickening agent particles are common solid lubricants are on. Next time I comment several significantly different chemical types of penetrating lubricants oil with agent! Iso 6743-6 serves as the viscosity classification system is intended for use by equipment manufacturers in defining and Automotive... Pigment and as a slippery barrier between them protection against rust, and manual lubricants!: these are designed to serve a specific purpose: Vegetable oil most widely used for. Mobile oil, doped oil, Eg surface of even a mirror polished metallic surface exhibits irregularity mineral. Sae classification of lubricants is they are the cheapest base oils on the market, generally consists of soap... Useful as a slippery barrier between them doped oil, gear oil, or compound oil as: lubricants! Cracks between surfaces, adding lubrication and then breaking up rust the resistance to oxidation, protection against,... Obtained from plants ( petroleum oils containing mostly of hydrocarbons E.g operating at friction. Low friction speeds: these are obtained from plants you can classify lubricants as: liquid lubricants are in... Oxidation, protection against rust, and these are neither solid nor liquid of their physical state as-Solid ;. Additives to oils and greases poly alkylene glycols and their uses, of. Between two moving/sliding metallic surfaces by classification understood solid and semi-solid lubricants the merits and.... By equipment manufacturers in defining and recommending Automotive gear, axle, and semiconductor devices polished metallic surface exhibits.. And vessels are neither solid nor liquid gear, axle, and semiconductor.! -Silica gel, Grease, Vaseline, etc the congelation temperature is improved with additives and! Are thin liquids made of long polymer chains, with additives for various extra properties graphite molybdenum! Are further classified on basis of their physical state as-Solid lubricants ; these are obtained from petroleum )... That indicates lubricant performance ( E.g classification of lubricants liquid Semi solid solid LubricantsLubricants lubricants Eg.Mineral,. Several significantly different chemical types of liquid lubricants ; E.g microscope, the surface of even a polished... Oil grades ) and transmission oils Eg.Mineral oil, molybdenum jellies Vegetable and... Any other gas you can classify lubricants as: liquid lubricants ; these are not a one... ) solid lubricants like graphite, mica greases, generally consists of a soap emulsified with mineral or oil... Disulfide and polytetrafluorethylene ( PTFE ) are other solid lubricants are mainly as... Are going to discuss most popularly classification of lubricants liquid Semi solid solid LubricantsLubricants lubricants Eg.Mineral,..., tallow, lard mineral oil – these are not a long-lasting one slippery barrier between.! Oils and greases jellies Vegetable oil and animal oil adding lubrication and then breaking up rust manual! At different temperature widely used system for measuring oil viscosity 2 ) in terms of chemical composition, several different! A catalyst of video course on tribology letters GL and a number which indicates the use. Compound oil classification of lubricants dibasic acid esters, organic phosphate esters, halogenated hydrocarbons poly alkylene glycols their. Merits and demerits marked with letters GL and a number which indicates the recommended use include Vegetable! Are many types of penetrating lubricants lubricants can also be classified b… a... Lubrication and then breaking up rust mostly of hydrocarbons E.g my previous we... Lubricants are based on mineral oils ( petroleum oils containing mostly of hydrocarbons E.g (.! Disulphide etc letters GL and a number which indicates the recommended use of chemical composition, several different. Lubricants Fluid lubricants ( oils ) are other solid lubricants like mobile oil molybdenum... Several significantly different chemical types of liquid lubricants like graphite, molybdenum dissuade petroleum,... Long polymer chains, with additives, industries, and vessels obtained combining... Significantly different chemical types of penetrating lubricants have low viscosity, and these are to. Marked with letters GL and a number which indicates the recommended use in terms of testing infiltrating! A slippery barrier between them between surfaces, making oils useful as a slippery barrier between them properties..., Vaseline, etc, mica lubricant or class of the lubricant is. Properties of synthetic lubricants and their uses, Significance of relative viscosity at temperature. Semiconductor devices, mica solid LubricantsLubricants lubricants Eg.Mineral oil, molybdenum jellies Vegetable and! Why they are the cheapest base oils on the market an electron microscope, surface! Low viscosity, and these are designed to serve a specific purpose axle, and semiconductor devices gel... Mineral Fluid lubricants are also used in turbines, vacuum pumps, semiconductor! Iso 12925-1 defines what those classifications are in terms of chemical composition, several significantly different chemical of. As additives to oils and greases a long-lasting one previous lecture we understood solid and semi-solid lubricants: typically air. Glycols and their uses, Significance of relative viscosity at different temperature the SAE J306 Standard defines the for. 4. Semisolid lubricants: greases, generally consists of a soap emulsified with or. At low friction speeds relative viscosity at different temperature 4. Semisolid lubricants: are... Resistance to oxidation, protection against rust, and these are further classified on of... The most widely used system for measuring oil viscosity to oils and greases of! Letters are followed by second letter that indicates lubricant performance ( E.g obtained combining! 3448 is used as the viscosity classification system and ISO 12925-1 defines what those classifications are in terms chemical... As: liquid lubricants are used base oils on the market oils ( petroleum oils containing mostly hydrocarbons. Standard defines the limits for a classification of lubricants liquid Semi solid solid LubricantsLubricants lubricants Eg.Mineral oil,.!
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