Search Home Products Engineering Hydraulic fluids Hydraulic fluids Selection and requirements The hydraulic fluid is the common element for all hydraulic components and must be selected very carefully. Quality and cleanliness of the hydraulic fluid are crucial to the operational safety, efficiency and service life of a system. Hydraulic fluids must be produced, selected and used in accordance with the generally accepted rules of technology and safety. Please refer to the valid national standards and directives (in Germany, the employer's liability insurance association guideline BGR 137) The data sheets presented here include instructions and rules for the selection, use and disposal of hydraulic fluids. The safe and reliable operation of industrial and mobile equipment is only possible if the hydraulic fluid used is selected with respect to the application. The main tasks of the hydraulic fluid include the transmission of power, the lubrication of the components, the reduction of friction, corrosion prevention and heat dissipation. Unfortunately, the common element “hydraulic fluid” is often disregarded during conceptual design. Increased requirements on machines and equipment constantly raise the quality requirements on the hydraulic fluid used. For selecting a suitable hydraulic fluid, adequate knowledge and experience are necessary. For this reason, Bosch Rexroth offers the rating of hydraulic fluids for Rexroth hydraulic components as service. Rating of hydraulic fluids Application notes and requirements for Rexroth hydraulic components RE 90220 Hydraulic fluids based on mineral oils and related hydrocarbons RE 90221 Environmentally acceptable hydraulic fluids RE 90222 Fire-resistant, waterless hydraulic fluids (HFDR/HFDU) RE 90223 Fire-resistant hydraulic fluids containing water (HFAE, HFAS, HFB, HFC) Others RE 98128 Hydraulic fluids in mobile applications (flyer) RE 90225 Axial piston units for use with HF fluids (HFDR, HFDU, HFA, HFB, HFC) Fluid rating RE 90235 Rating of hydraulic fluids for Rexroth hydraulic components (pumps and motors) RE 98129 Rating of hydraulic fluids (flyer) RE 98135 Fluid test rigs (flyer) Fluidrating-Portal website for additive and fluid manufacturers Fluidrating-Portal registration Request access RDE 90245 Fluid rating list Training hydraulic fluids Training HT FLUIDS eTraining eT-HT FLUIDS COMPANY About Bosch Rexroth Contact Locator Trade shows and Events Blogs Press Jobs and Career RELATED LINKS eConfigurators and Tools Rexroth Store Media Directory LOCATION LOCATION United Kingdom International Argentina Australia Austria Belarus Belgium Bosnia and Herze... Brazil Bulgaria Canada Chile China Colombia Croatia Czech Republic Denmark Finland France Germany Greece Hungary India Indonesia Ireland Italy Japan Kazakhstan Korea Malaysia Mexico Middle East Netherlands New Zealand Norway Peru Philippines Poland Portugal Romania Russia Serbia Singapore Slovenia South Africa Spain Sweden Switzerland Taiwan Thailand Turkey USA Ukraine Venezuela Vietnam © Bosch Rexroth Ltd. 2014-2021, all rights reserved ImprintData Protection NoticeLegal NoticeQuality and Environmental CertificatesPurchasing and LogisticsProduct SecurityCookie Policy Cookie Settings Privacy Settings Cookies that are essential for technical reasons are set on this webpage so we can provide users with our offers. A cookie that stores your current privacy settings is also set (selection cookie). With the exception of the selection cookie, technically non-essential cookies and tracking mechanisms, that enable us to provide you with customized offers (marketing cookies and tracking mechanisms), are only used if you have given prior consent to such use: Read more Consent to Marketing cookies Read more When clicking "Save" only the cookies you selected will be used. Under your privacy settings, you can withdraw at any time the consent that you granted here with immediate effect. CONSENT TO MARKETING COOKIES Save Data protection notice Corporate information