1.1 This specification covers mineral oils used in mobile equipment hydraulic systems operating up to 35 MPa, where the performance requirements demand fluids with rust and oxidation inhibitors plus antiwear characteristics. 1.2 This specification defines the requirements of hydraulic fluids that are compatible with most existing machinery components when there is adequate maintenance. 1.3 This specification defines only new lubricating oils before they are installed in the hydraulic system. 1.4 This specification defines a specific type of hydraulic oil. It does not include all hydraulic oils. Some oils that are not included may be satisfactory for certain hydraulic applications. Certain equipment or conditions of use may permit or require a wider or narrower range of characteristics than those described herein. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
ASTM D6158 Standard Specification for Mineral Hydraulic Oils defines several classes of mineral hydraulic oils. Owing to the increasing performance requirements of modern mobile hydraulic equipment, a request was received to develop a new specification like D6158 defining higher performance more suitable for users of modern high pressure mobile equipment that is typically used in construction and surface mining industries.
Keywords7.1 antiwear protection; guideline; hydraulic oils; mineral oils; rust and oxidation protection; viscosity index; mobile hydraulic equipment :
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top