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Hydraulic fluids continue to expand their critical role and work multi-functionality within the marketplace. Considering the incompressible natur<\/span>e of oils, the work performed by hydraulic fluids<\/a> is essential to proper functioning of hydraulically actuated equipment of all types. A basic <\/span>understanding of the classifications of Hydraulic fluids will go a long way in helping you\u00a0<\/span>make informed decisions regarding what to use in your operation\u2019s equipment.<\/span><\/p>\n Biodegradable hydraulic fluids continue an increasing trend of replacing conventional petroleum and synthetic hydraulic fluids. Advances in the science & technology behind bio-based hydraulic fluid offerings have evolved to the point where many bio-hydraulic fluids offer the same or better performance than conventional petroleum or synthetic hydraulic fluids, while offering a decisive environmental advantage<\/a>. Due in part to the expanding role of biodegradable hydraulic fluids, and because the diversity of hydraulic fluid types has become so broad, the need to further classify hydraulic fluid types was evident.<\/span><\/p>\n The International Organization for Standardization (ISO) established a classification system for hydraulic fluids that is designated; ISO 6743-4: 1999 (now updated to 2015), Lubricants, Industrial Oils and Related Products (Class L \u2013 Classification \u2013 Part 4: Family H (Hydraulic Systems)<\/em><\/strong>.<\/p>\n The ISO 6743-4 classification system can be generally applied to the three primary classes of hydraulic fluids:<\/p>\n For the purpose of providing generalized descriptions to aid you in understanding the many different hydraulic fluid classifications, this BioBlend blog provides a generalized summary of the ISO 6743-4 classifications that you may\u00a0 find useful in understanding some of the most common hydraulic fluid classifications. It also provides insights into the ISO classification descriptions of the BioFlo Biodegradable Hydraulic Fluid technologies.<\/p>\n HETG = Hydraulic Environmental Triglycerides = <\/strong>A biodegradable (vegetable oil based) <\/em>hydraulic fluid which uses triglyceride esters as the base fluid. Vegetable oils are all classified as triglyceride esters.<\/p>\n ****BioBlend\u2019s BioFlo AW – BioFlow AW | BioBlend<\/a> – is an excellent example of an HETG hydraulic fluid<\/u><\/strong><\/p>\n HEES = Hydraulic Environmental Ester oil Synthetic = <\/strong>A biodegradable hydraulic fluid which uses\u00a0 synthetic esters as the base fluid. Synthetic esters share a similar chemical structure to HETG types – but are synthesized.<\/p>\n ****BioBlend\u2019s BioFlo Synthetic AW –\u00a0 BioFlo Synthetic AW | BioBlend<\/a>\u00a0– is the perfect fit for anyone in need of a HEES synthetic hydraulic fluid!<\/u><\/strong><\/p>\n HEPG = Hydraulic Environmental Polyalkylene Glycols <\/strong>= A biodegradable hydraulic fluid which uses polyalkylene glycols (PAGS) <\/em>as the base fluid. PAGS are synthesized from hydrocarbon oxides. HEPG\u2019s are typically used in areas where fire is a hazard and may require special seals and\/or seal materials.<\/p>\n HEPR = Hydraulic Environmental PAO and Related products = <\/strong>A biodegradable hydraulic fluid which uses polyalphaolefins and related hydrocarbons as the base fluid. These base stocks are synthesized from crude oil derivatives.<\/p>\n \u00a0<\/strong>ISO-L-HH – <\/strong>Mineral lubricants without corrosion inhibitors<\/p>\n ISO-L-HL – <\/strong>HH lubricants with oxidation reduction and anticorrosive additives<\/p>\n ISO-L-HM – <\/strong>HL lubricants with wear reducing additives<\/p>\n ISO-L-HR – <\/strong>HL lubricants with a high VI<\/p>\n ISO-L-HV – <\/strong>HM lubricants with a high VI<\/p>\n ISO-L-HG – <\/strong>HM lubricants with shock resistant features<\/p>\n ISO-L-HS – <\/strong>Synthetic liquids<\/p>\n NOTE on Global Classifications: <\/strong>Because we operate in a global marketplace with equipment deployed throughout North America that is manufactured in other countries, it\u2019s likely you may see hydraulic fluid classifications beyond the ISO 6743-4 classification designations. For example, while the classifications of hydraulic fluid are set out in ISO 6743-4 with the designations HL, HM, HV \u2026 in Germany the designations HL, HLP, HVLP are standard and frequently used, in accordance with DIN 51524.<\/p>\n H <\/strong>and HH – <\/strong>Mineral oil with no active ingredients \u2013 is no longer used in practice.<\/p>\n HL – <\/strong>With active ingredients to increase the corrosion protection and resistance to aging<\/p>\n HM – <\/strong>With active ingredients to increase the corrosion protection and resistance to aging and to reduce wear due to scoring in the mixed friction area<\/p>\n HLP – <\/strong>Further active ingredients in addition to HL oil to reduce wear and increase resistance in the mixed friction area \u2013 widest application in practice<\/p>\n HV <\/strong>and HVLP – <\/strong>Like HLP, but with increased resistance to aging, as well as an improved temperature-viscosity relationship<\/p>\n HLPD – <\/strong>Like HLP, but with additives to improve particle transport (detergent effect) <\/em>and dispersion capacity (water carrying capacity) <\/em>and active ingredients to increase the corrosion protection (German designation, not standardised)<\/em>\u00a0<\/em><\/p>\n \u00a0<\/strong>There are several types of fire-resistant fluids and they are generally classified as follows:<\/p>\n ISO-L-HFAE – <\/strong>Emulsions \u2013 \u2018oil-in-water\u2019 <\/strong>(usually >80% water content)<\/p>\n ISO-L-HFAS – <\/strong>Synthetic aqueous fluids – chemical combination in water (usually >80% water content)<\/p>\n ISO-L-HFB – <\/strong>Emulsions \u2013 \u2018water-in-oil\u2019 <\/strong>(usually >40% water)<\/p>\n ISO-L-HFC – <\/strong>Glycol solutions, polyalkylene glycol solutions or water glycols (usually >35% water content)<\/p>\n ISO-L-HFDR – <\/strong>Synthetic phosphate esters (without water) ISO-L-HFDS <\/strong>Chlorinated hydrocarbons (without water)<\/p>\n ISO-L-HFDT – <\/strong>HFDR\/HFDS mixtures<\/p>\n ISO-L-HFDU – <\/strong>Synthetic anhydrous liquids (without water) – other than phosphate ester \u2026 Polyol Ester or PAG (more resistant than HFDR, HFDS, or HFDT)<\/p>\n ****Check out BioBlend\u2019s BioFlo HFDU – Fire-Resistant Hydraulic Fluid | BioBlend<\/a> – for the top FM Approved Bio-based Fire Resistant Hydraulic fluid on the market today!<\/u><\/strong><\/p>\n As always you can call us directly at 630-227-1800. You can also fill out a contact request form<\/a> and we would be happy to follow up with you regarding your needs.<\/p>\n In part 2 next week we will follow up to this post with a Q&A about BioBlend\u2019s products<\/a> as they relate to these classifications. Please be sure to follow us on LinkedIn<\/a> to stay current on renewable and biodegradable lubricants<\/a>!<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" Hydraulic Fluid Classifications\u00a0 Hydraulic fluids continue to expand their critical role and work multi-functionality within the marketplace. Considering the incompressible nature of oils, the work performed by hydraulic fluids is essential to proper functioning of hydraulically actuated equipment of all types. A basic understanding of the classifications of Hydraulic fluids will go a long way […]<\/p>\n","protected":false},"author":1,"featured_media":2323,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"\n
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The ISO 6743-4 classification of biodegradable hydraulic fluids<\/u>:<\/h3>\n
\u00a0<\/strong>ISO-L-HETG: Triglyceride Base <\/strong>(vegetable oils, i.e. plant oils)<\/em><\/h4>\n
ISO-L-HEES: Synthetic Ester Base <\/strong>(similar to triglyceride but with a non-vegetable based acid & alcohol)<\/em><\/h4>\n
ISO-L-HEPG: Polyalkyleneglycol Base <\/strong>(i.e. polyglycol)<\/em><\/h4>\n
ISO-L-HEPR: Other Base Liquid \u2013 primarily Polyalphaolefins<\/strong><\/h4>\n
The ISO 6743-4 classification of mineral oils (i.e. petroleum) hydraulic fluids<\/u>:<\/h3>\n
The ISO 6743-4 classification of fire resistant hydraulic fluids<\/u>:<\/h3>\n
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Hydraulic Fluid Classifications\u00a0<\/em><\/strong><\/h2>\r\nHydraulic fluids continue to expand their critical role and work multi-functionality within the marketplace. Considering the incompressible natur<\/span>e of oils, the work performed by hydraulic fluids s essential to proper functioning of hydraulically actuated equipment of all types. A basic <\/span>understanding of the classifications of Hydraulic fluids will go a long way in helping you\u00a0<\/span>make informed decisions regarding what to use in your operation\u2019s equipment.<\/span>\r\n\r\nBiodegradable hydraulic fluids continue an increasing trend of replacing conventional petroleum and synthetic hydraulic fluids. Advances in the science & technology behind bio-based hydraulic fluid offerings have evolved to the point where many bio-hydraulic fluids offer the same or better performance than conventional petroleum or synthetic hydraulic fluids, while offering a decisive environmental advantage. Due in part to the expanding role of biodegradable hydraulic fluids, and because the diversity of hydraulic fluid types has become so broad, the need to further classify hydraulic fluid types was evident.<\/span>\r\n\r\nThe International Organization for Standardization (ISO) established a classification system for hydraulic fluids that is designated; ISO 6743-4: 1999 (now updated to 2015), Lubricants, Industrial Oils and Related Products (Class L \u2013 Classification \u2013 Part 4: Family H (Hydraulic Systems)<\/em><\/strong>.\r\n
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The ISO 6743-4 classification of biodegradable hydraulic fluids<\/u>:<\/h3>\r\n
\u00a0<\/strong>ISO-L-HETG: Triglyceride Base <\/strong>(vegetable oils, i.e. plant oils)<\/em><\/h4>\r\nHETG = Hydraulic Environmental Triglycerides = <\/strong>A biodegradable (vegetable oil based) <\/em>hydraulic fluid which uses triglyceride esters as the base fluid. Vegetable oils are all classified as triglyceride esters.\r\n\r\n****BioBlend\u2019s BioFlo AW - BioFlow AW | BioBlend<\/a> - is an excellent example of an HETG hydraulic fluid<\/u><\/strong>\r\n
ISO-L-HEES: Synthetic Ester Base <\/strong>(similar to triglyceride but with a non-vegetable based acid & alcohol)<\/em><\/h4>\r\nHEES = Hydraulic Environmental Ester oil Synthetic = <\/strong>A biodegradable hydraulic fluid which uses\u00a0 synthetic esters as the base fluid. Synthetic esters share a similar chemical structure to HETG types - but are synthesized.\r\n\r\n****BioBlend\u2019s BioFlo Synthetic AW -\u00a0 BioFlo Synthetic AW | BioBlend<\/a>\u00a0- is the perfect fit for anyone in need of a HEES synthetic hydraulic fluid!<\/u><\/strong>\r\n
ISO-L-HEPG: Polyalkyleneglycol Base <\/strong>(i.e. polyglycol)<\/em><\/h4>\r\nHEPG = Hydraulic Environmental Polyalkylene Glycols <\/strong>= A biodegradable hydraulic fluid which uses polyalkylene glycols (PAGS) <\/em>as the base fluid. PAGS are synthesized from hydrocarbon oxides. HEPG\u2019s are typically used in areas where fire is a hazard and may require special seals and\/or seal materials.\r\n
ISO-L-HEPR: Other Base Liquid \u2013 primarily Polyalphaolefins<\/strong><\/h4>\r\nHEPR = Hydraulic Environmental PAO and Related products = <\/strong>A biodegradable hydraulic fluid which uses polyalphaolefins and related hydrocarbons as the base fluid. These base stocks are synthesized from crude oil derivatives.\r\n
The ISO 6743-4 classification of mineral oils (i.e. petroleum) hydraulic fluids<\/u>:<\/h3>\r\n\u00a0<\/strong>ISO-L-HH - <\/strong>Mineral lubricants without corrosion inhibitors\r\n\r\nISO-L-HL - <\/strong>HH lubricants with oxidation reduction and anticorrosive additives\r\n\r\nISO-L-HM - <\/strong>HL lubricants with wear reducing additives\r\n\r\nISO-L-HR - <\/strong>HL lubricants with a high VI\r\n\r\nISO-L-HV - <\/strong>HM lubricants with a high VI\r\n\r\nISO-L-HG - <\/strong>HM lubricants with shock resistant features\r\n\r\nISO-L-HS - <\/strong>Synthetic liquids\r\n\r\nNOTE on Global Classifications: <\/strong>Because we operate in a global marketplace with equipment deployed throughout North America that is manufactured in other countries, it\u2019s likely you may see hydraulic fluid classifications beyond the ISO 6743-4 classification designations. For example, while the classifications of hydraulic fluid are set out in ISO 6743-4 with the designations HL, HM, HV \u2026 in Germany the designations HL, HLP, HVLP are standard and frequently used, in accordance with DIN 51524.\r\n\r\nH <\/strong>and HH - <\/strong>Mineral oil with no active ingredients \u2013 is no longer used in practice.\r\n\r\nHL - <\/strong>With active ingredients to increase the corrosion protection and resistance to aging\r\n\r\nHM - <\/strong>With active ingredients to increase the corrosion protection and resistance to aging and to reduce wear due to scoring in the mixed friction area\r\n\r\nHLP - <\/strong>Further active ingredients in addition to HL oil to reduce wear and increase resistance in the mixed friction area \u2013 widest application in practice\r\n\r\nHV <\/strong>and HVLP - <\/strong>Like HLP, but with increased resistance to aging, as well as an improved temperature-viscosity relationship\r\n\r\nHLPD - <\/strong>Like HLP, but with additives to improve particle transport (detergent effect) <\/em>and dispersion capacity (water carrying capacity) <\/em>and active ingredients to increase the corrosion protection (German designation, not standardised)<\/em>\u00a0<\/em>\r\n
The ISO 6743-4 classification of fire resistant hydraulic fluids<\/u>:<\/h3>\r\n\u00a0<\/strong>There are several types of fire-resistant fluids and they are generally classified as follows:\r\n
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