A general purpose oils general purpose oils contain

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Unformatted text preview: purpose oils contain R&O additives, AW agents, antifoamants, and demulsifiers. They may be used in mechanical applications where a specialized oil is not required. Their ISO viscosity ranges from about 32 to around 460. These oils are often referred to as R&O oils or hydraulic oils although they may contain other additives and are not intended exclusively for hydraulic use. 13-2 EM 1110-2-1424 28 Feb 99 Some of these oils are more highly refined and provide longer life and better performance than others. These are usually referred to as “turbine oils” or premium grades. Although used in turbines, the name “turbine oil” does not mean their use is restricted to turbines, but refers to the quality of the oil. (b) EP gear oils. These oils generally have a higher viscosity range, from about ISO grade 68 to around 1500, and may be regarded as general purpose oils with EP additives. Although commonly used in gear systems, these oils can be used in any application where their viscosity range and additives are required. Gear oils should not be confused with SAE gear oils that are specially formulated for automotive applications; automotive oils are not discussed in this manual. (5) Producer brand names. Oil producers often identify their products by names that may or may not be connected with standard classifications. For example, a name such as Jo-Lube 1525, a product of Jonell Oil, tells nothing of its class. However, Conoco's Dectol R&O Oil 32 indicates that it is an R&O oil with an ISO viscosity of 32. Regardless of how much information may be implied by the brand name, it is insufficient to select a lubricant. A user must refer to the producer’s information brochures to determine the intended use, additives, and specifications. (6) Oil producer’s product data and specifications (a) Product data. Oil producers publish product information in brochures, pamphlets, handbooks, or on the product container or packaging. Although the amount of information varies, it generally includes the intended use, the additives (AW, EP, R&O, etc.), oil type (i.e., paraffinic, naphthenic, synthetic, compounded, etc.), and the specifications. Some producers may identify the product by its usage classification such as those noted above, or they may simply note the machinery class where the product can be used. Often, both methods of identification are used. Intended use designations can be misleading. For example, fact sheets for three different oils by the same producer indicate that the oils can be used for electric motors and general purpose applications. However, all three are not suitable for every application of this equipment. One oil contains no oxidation inhibitors and is intended for use where the oil is frequently replaced. The second is an R&O oil with the usual antifoaming and demulsifying agents. AW agents are also included. The third is a turbine oil similar to the second except that the refining method and additive package provide greater protection. One turbine viscosity grade, ISO 32, is treated to resist the effects of hydrogen used as a coolant in generators. Failure to notice these differences when evaluating the data can lead to incorrect application of these lubricants. Producers do not usually list additives. Instead, they indicate characteristics such as good antiwear qualities, good water resistance, or good oxidation resistance. These qualities are not inherent in oil or contained in sufficient quantities to provide the degree of protection necessary. Therefore, the user is safe in assuming that the appropriate agent has been added to obtain the given qu...
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This note was uploaded on 02/09/2012 for the course MECH 84 taught by Professor Mba during the Spring '11 term at LDSBC.

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