Lubricants necessary for the transmission mechanisms, not received special attention. The grease in the gear boxes replaced not as often as in the engine. Oil for transmissions – lubricating products whose primary function is the formation of a protective film on each gear mechanism transmission, transfer boxes, axles and differentials. Motor is more or less clear. Let's examine the brand of gear oils and their characteristics. This is very useful information for novice car owners.
Regardless of oil grade for transmission in the core of the product is the extract, obtained in the process of selective treatment of petroleum lubricants. Also there are added a variety of products-distillates and additives. In the latter it is often phosphorus, sulfur, disulfides of molybdenum and other similar substances. Before the world began to appear in vehicles equipped with high-load transmission mechanisms, as a lubricant used nigral. Its viscosity ranged from 6 to 20 mm2/s at a temperature of 100 degrees. Open gears worked due to residual viscous lubricants with additives. Their viscosity is from 50 to 500 mm2/s at a temperature of 100 degrees.
We have briefly considered, which requires lubrication in the transmission system. These products need to reduce friction in the process, gears, and other mechanisms. Through the use of lubricants considerably reduces the wear of the transmission components, reduces the energy loss due to friction. Due to the oils from the details given excess heat. The surface of the gears and mechanisms are protected from corrosion. In various countries use their oil. Their different klassifiziert.
Brand gear oils and their characteristics in Russia is strictly regulated by the Standards of Soviet times. As the main document, which presents all information about the lubricants for the nodes and transmission units is used GOST 17479.2-85. This standard provides for four groups of lubricants. They vary in viscosity – 9, 12, 18 and 34. All existing products are divided into classes according to the result of viscosity measurements at a temperature of 100 degrees. The second indicator – this is the minimum temperature at which dynamic viscosity not more than 150 PA/s.
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The Transmission oil, their marks and characteristics can be divided into five major groups. First – products where there are no additives. In other groups these components allowed. The effectiveness and characteristics of additives increases the same as the group number. The fifth category includes oils wide range of applications.
This class includes materials that consist only of mineral components, and they don't contain additives. These greases are designed to work in worm gear, bevel gears, spur. Valid contact pre-load – from 900 to 1500 MPa at temperatures up to 90 degrees.
It is also mineral-based oil, but they contain various additives, which protect components from wear. These brands of gear oils and their characteristics suitable for use in worm, cylindrical and other gears where the contact load is up to 2100 MPa at temperatures up to 130 degrees.
This is a mineral lubricant with extreme pressure additives. Additives in these products are affected moderately. These lubricants are used with spiral-canonical gears, cylindrical, hypoid. Here the weight limit is up to 2500 MPa and the temperature reaches 150 degrees.
This oil contains extreme pressure additives with a high level of action. They are intended for transmission, where the maximum load does not exceed 3000 MPa at a maximum temperature of 150 degrees. One of their representatives – transmission oil "LUKOIL”, the characteristics of which allow you to use them for passenger cars.
This is a versatile lubricating products that contain packages versatile additive. They are often multifunctional. Limit the contact load is not more than 3000 MPa, and the maximum temperature is not over 150 degrees.
Brand gear oils and their characteristics are encrypted in a special code. It looks similar to the following: TM-5-9(3). Here TM says that the product is a oil for transmissions. Figure 5 reports that it is a multipurpose product with extreme pressure additive. Values of 9 and 3 indicate that this material with low viscosity and content of the thickening additive.
Today, there are a variety of transmission mechanisms with their gears and types of gears. Therefore, depending on the design of the component,transmission type and other parameters defines the characteristics of gear oils.
A Good product should have the following characteristics:
Brand gear oils and their characteristics are also classified according to the system API. It is something like Russian GOST standards. But it takes into account not only the viscosity, but also the environment for which one or the other lubrication:
So, we examined the Brand gear oils and their characteristics. As you can see, there is quite a wide classification of lubricants. When choosing the right gear oil it is important to look not only at his class and toughness, but also on the recommendations of the manufacturer.
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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."
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