ANSI/AGMA 9005-E02 pdf free

08-03-2021 comment

ANSI/AGMA 9005-E02 pdf free.Industrial Gear Lubrication.
When one thinks of gear lubrication, the primary concern is usually about the gears. In addition to the gears themselves, there are many other components that must also be served by the fluid in the gearbox. Consideration should also be given to the bearings, seals, and other auxiliary equipment, e.g.. pumps and heat exchangers, that may be affected by the choice of lubricant. With many open gear drives, the hearings are lubricated independently of the gears, thus allowing for special fluid requirements should the need arise. However, most enclosed and semi-enclosed gear drives utilize one lubricant and lubricant source of supply for the gears. bearings, seals, pumps, etc. Therefore, selecting the correct lubricant for a gear drive system includes addressing the lubrication needs of not only the gears, but also all other associated components in the system.
3.1 General
A lubricant is used in gear applications to control friction and wear between the mating surfaces, and in enclosed gear drive applications, to transfer heat away from the contact area. It also serves as a medium to carry the additives that may be required for special functions. There are many different lubricants available to accomplish these tasks.
Lubricant properties can be quite varied depending on the source of the base stock(s) and the type of additive(s) used. Terminology describing the performance properties of lubricants can be just as varied depending on the definition used. The descriptions provided in this standard are not intended to replace those found in AGMA, ASTM. ISO, SAE or other technical society documents. It is merely intended to provide the user with more information about the term, how it is applied in this standard, and how it is measured. Examples of some properties used to
assess lubricant suitability for gear applications are discussed in annex A.
The physical properties of a lubricant, such as viscosity and pour point, are largely derived from the base stock(s) from which they are produced. While viscosity is the most common property associated with a lubricant, there are many other properties that contribute to the makeup and character of the finished product. The properties of finished gear lubricants result from a combination of base stock selection and additive technology.
3.2 Lubricant selection
The key functions provided by the lubricant are to minimize the friction and wear between surfaces in relative motion, and to remove heat generated by the mechanical action of the system. In order to accomplish these tasks, the lubricant must have sufficient viscosity to separate the mating surfaces as much as possible, and also have the appropriate chemical (additive) system to minimize thermal and oxidative degradation, arid provide antiwear and antiscuff performance for transient peak operating situations.
The choice of the appropriate lubricant depends in part on matching its properties to the particular application. A detailed elastohydrodynamic (EHO) analysis of the gearbox is the most desirable and thorough assessment of the gear lubrication requirements, but this is not always practical due to the amount of information required. For more information about this approach the reader is recommended to review the information provided in ANSI/AGMA 2101-C95 [lJ and AGMA 925-A02 [2].
In the absence of detailed information about gear geometry, loading, etc., it is recommended that the user fllw the tables offered in annex B. The tables listed in annex B provide estimates of the appropriate viscosity grade (VG) based on both operating speed and temperature. Annex B contains four tables because the viscosity grade will also be
dependent upon the viscosity-temperature characteristics or viscosity index (VI) of the fluid used. The four VIs chosen were considered representative of most fluids used in industrial applications today.They include VIs of 90, 120, 160, and 240.ANSI/AGMA 9005 pdf download.

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