There are quite a lot of components in the car, where for separation rubbing surfaces thick, ointment-like products called greases. We will talk about them.

Greases are used to reduce friction and wear of components in which to create forced circulation oil is impractical or impossible. For example, wheel and pivot bearings, steering and suspension joints, universal joints and splines, etc. Previously, this list was quite extensive, but today we see that the share of greases among other operating materials in a car is decreasing. The reason for this is the use of maintenance-free units based on innovative structural materials (for example, replacing the “bushing-pin” friction pair with a hinge made of high-molecular rubber). However, where there is no alternative to the use of ointment-like products, today they are subject to the most stringent requirements, including environmental ones. It often happens that for each specific component, be it a fifth wheel coupling or cab suspension joints, it is only recommended certain brand operational material. How to choose the right product? This is what we have to figure out.

Both solid and liquid

Greases in consistency occupy an intermediate position between liquid oils and solid lubricants (graphite, for example). At a low temperature and no load, the lubricant retains the shape previously given to it, and when heated and under load it begins to flow weakly - so weakly that it does not leave the friction zone and does not leak through the seals.

The main functions of greases do not differ from those assigned to liquid oils. Everything is the same: wear reduction, scuffing prevention, corrosion protection. Specificity only in the area of application: suitability for lubrication of heavily worn friction pairs; possibility of use in unsealed and even open units where there is forced contact with moisture, dust or aggressive environments; ability to adhere firmly to lubricated surfaces. Very important property grease is long term operation. Some modern products practically do not change their quality indicators over the entire period of operation in the friction unit and therefore can be installed one-time, during assembly.

If we talk about general shortcomings paste-like substances, then first of all you should pay attention to the lack of cooling (heat removal) and removal of wear products from the friction zone. By the way, this may be why some automakers, when developing components such as, for example, wheel hubs, often give preference to gear oils.

The simplest grease consists of two components: an oil base (mineral or synthetic) and a thickener, under the influence of which the oil becomes inactive. The thickener is the framework of the lubricant. Simply put, it can be compared to foam rubber, which retains liquid in its cells. Most often, calcium, lithium or sodium soaps (salts of higher fatty acids) are used as a thickener, the content of which can range from 5 to 30% by weight of the product. The cheapest calcium lubricants are obtained by thickening industrial mineral oils calcium soaps, - solid oils. Once upon a time they were so commonly used that the word “grease” became a common designation for grease in general, although this is not entirely correct. Solid oils do not dissolve in water and have very high anti-wear effects, however, they function normally only in units with an operating temperature of up to 50–65 ° C, which greatly limits their use in modern cars. And the most versatile lithols are lubricants obtained by thickening petroleum and synthetic oils with lithium soaps. They have a very high dropping point (about +200°C), are extremely moisture resistant and are operational in almost any load and thermal conditions, which allows them to be used almost anywhere where grease is required.

Hydrocarbons (paraffin, ceresin, petrolatum) or inorganic compounds (clays, silica gels) can also be used as a thickener. Clay thickener, unlike soap thickener, does not soften when high temperatures, so it can often be found in refractory lubricants. But hydrocarbon thickeners are used mainly for the production of conservation materials, since their melting point does not exceed 65°C.

In addition to the base and thickener, the lubricant includes additives, fillers and structure modifiers. The additives are practically the same as those used in commercial oils(engine and transmission), they are oil-soluble surfactants and make up 0.1–5% by weight of the lubricant. A special place in the additive package is occupied by adhesive, that is, adhesive components - they enhance the effect of the thickener and increase the ability of the lubricant to adhere to the metal. To ensure the lubricant operates under extreme thermal and load conditions, sometimes solid and oil-insoluble fillers are introduced into it - usually molybdenum disulfite and graphite. Such additives usually give the lubricant a specific color, for example, silver-black (molybdenum disulfite), blue (copper phthalocyanide), black (carbon-graphite).

Properties and standards

The scope of application of the lubricant is determined by a large set of indicators, including shear strength, mechanical stability, dropping point, thermal stability, water resistance, etc. But the role is most important characteristics is given to the dropping point and penetration level. In fact, it is this pair that is the output parameter for evaluating the lubricant.

The dropping point shows to what extent the lubricant can be heated without it turning into a liquid and, therefore, losing its properties. It is measured very simply: a piece of lubricant of a certain mass is heated evenly on all sides, gradually increasing the temperature until the first drop falls from it. The drop limit of the lubricant should be 10–20 degrees higher than the maximum heating temperature of the unit in which it is used.

The term “penetration” (penetration) owes its appearance to the measurement method - the density of semi-liquid bodies is determined in a device called a penetrometer. To evaluate the consistency, a metal cone standard size and the molds, under their own weight, are immersed for 5 s in a lubricant heated to a temperature of 25°C. How softer lubricant, those will go deeper the cone into it and the higher its penetration, and vice versa, harder lubricants are characterized by a lower penetration number. By the way, such tests are used not only in the production of lubricants, but also in the paint and varnish business.

Now about the standards. According to the generally accepted classification, lubricants are usually distinguished by area of application and thickness. Depending on the area of application, lubricants are divided into four groups: antifriction, preservation, sealing and rope. The first group is divided into subgroups: lubricants general purpose, multi-purpose lubricants, heat-resistant, low-temperature, chemical-resistant, instrument, automotive, aviation. In relation to the transport sector greatest distribution received anti-friction lubricants: multi-purpose (Litol-24, Fiol-2U, Zimol, Lita) and special automotive (LSTS-15, Fiol-2U, CV joints-4).

To distinguish products by consistency, the American classification NLGI (National Lubricating Grease Institute) is used all over the world, which divides lubricants into 9 classes. The division criterion is the level of penetration. The higher the class, the thicker the product. Greases used in cars often belong to the second class, less often to the first class. For semi-liquid products recommended for use in centralized lubrication systems, two separate classes have been identified. They are designated by codes 00 and 000.

Previously, in our country, the name of lubricants was set arbitrarily. As a result, some lubricants received a verbal name (Solidol-S), others - a numbered one (No. 158), and others - the designation of the institution that created them (CIATIM-201, VNIINP-242). In 1979, GOST 23258-78 was introduced, according to which the name of the lubricant must consist of one word and an alphanumeric index (for various modifications). Domestic petrochemists still adhere to this rule today. As for imported products, abroad there is currently no uniform classification for all manufacturers according to operational indicators. Majority European manufacturers are guided by the German standard DIN-51 502, which establishes a designation for greases that displays several characteristics at once: purpose, type base oil, set of additives, NLGI class and operating temperature range. For example, the designation K PHC 2 N-40 indicates that this grease is intended for lubrication of sliding and rolling bearings (letter K), contains anti-wear and extreme pressure additives (P), and is produced on the basis synthetic oil(NS) and belongs to the second consistency class according to NLGI (number 2). The maximum temperature for use of such a product is +140°C (N), and the lower operating limit is limited to –40°C.

Some global manufacturers use their own designation structures. Let's say the Shell lubricant designation system has the following structure: brand - “suffix 1” - “suffix 2” -
NLGI class. For example, the Shell Retinax HDX2 product stands for lubricant with very high performance characteristics for units operating under extreme conditions harsh conditions(HD), containing molybdenum disulfite (X) and classified as NLGI consistency class 2.

Often, the labels of foreign products contain two designations at once: their own marking and a code according to the DIN standard. By analogy with liquid oils, the most complete requirements for operating materials are reflected in the specifications of car manufacturers or component manufacturers (Willy Vogel, British Timken, SKF). The corresponding approval numbers are also printed on the lubricant label next to the designation of its performance properties, but basic information about the products recommended for use and when to replace them is contained in the vehicle service manual.

Lubricants different manufacturers(even for the same purpose) cannot be mixed, since they may contain different chemical composition additives and other components. Also, you should not mix products with different thickeners. For example, when mixing casting grease (Litol-24) with calcium grease (solidol), the mixture receives the worst performance properties. Of the automotive greases offered on the market, it is most advisable to choose those recommended by the car manufacturer.

RESEARCH OF LUBRICANTS IN SPLINED JOINTS OF CARDAN SHAFTS OF TIMBER TRUCKS

Bykov V.V., Kapustin R.P. (BGITA, Bryansk, Russian Federation)

Research of greasings in connections of shaft of autotimber carrying vessels.

The cardan transmission of timber trucks consists of two shafts connected by a spline joint and hinges. Spline connection allows length changes cardan shafts when the springs bend. The displacement of the shaft in the splined sleeve reaches 40...50 mm, which causes intense wear of the interface when the tightness of the connection is broken and due to large loads (torques and axial forces). In this case, bending and twisting of the propeller shaft pipe is possible.

The Department of Mechanization of the Forestry Industry and Forestry (now the Department technical service) BGIT conducts research into the wear of cardan transmissions of timber vehicles using various lubricants. For this purpose, bench studies were carried out. In connection with the emergence of new lubricants, bench studies were continued, and observations of the technical condition were carried out spline connections cardan shafts of timber trucks under the conditions of their operation in the forestry enterprises of the Bryansk region. Observations were carried out on timber trucks of the Zil-131, Ural-4320, MAZ-509A and KamAZ-5312 brands in conjunction with TMZ-802 and GKB-9383 dissolutions.

The factory operating instructions for cars give exaggerated standards for the frequency of replacing lubricants in cardan drives (up to 20,000 km). The specifics of the operation of timber trucks: heavy load conditions, off-road and water movement, garage-free storage, etc. require a reduction in the frequency standards for lubrication operations to 10,000 km.

The use of new greases will help reduce wear on spline joints of cardan transmissions and increase their service life.

To lubricate the splined joints of driveshafts of automobiles, complex greases are used. Used as an oil base for lubricants various oils petroleum and synthetic origin. Thickeners can be fatty acid soaps, paraffin, soot, etc. The thickener content in greases is 10-20%. The particle sizes of the dispersed thickener phase range from 0.1 microns to 10 microns. To improve anti-wear, extreme pressure and preservation properties, additives are added to greases (up to 5%).

The main performance characteristics of greases include: tensile strength, viscosity, colloidal stability, dropping point, mechanical stability and water resistance.

Tensile strength characterizes the ability of lubricants to be retained in friction units under the influence of inertial forces. It depends on the temperature, with an increase in temperature it decreases.

The viscosity of greases decreases with increasing temperature of the unit, thereby worsening its anti-wear properties. It is determined at 10 s -1.

The temperature at which the first drop of lubricant falls is called the dropping point. According to this characteristic, lubricants are divided into low-melting ( t kp = up to 60 0 C), medium-melting ( t kp = from 60 to 100 0 C) and refractory ( t kp >100 0 C).

A lubricant with poor mechanical stability quickly breaks down, liquefies and leaks out of friction units.

Based on the type of thickener, lubricants are divided into soap lubricants with organic and inorganic thickeners and hydrocarbon lubricants.

To study the performance of greases recommended by car factories for lubrication of splined joints of cardan shafts, grease 158, Litol-24 and Fiol-2 were used, the main physicochemical and operational properties of which are given in Table 1.

Table 1 - Physico-chemical and operational properties of the studied lubricants.

Lubricant brand	Exemplary compound		Temperature boiling, 0 C	Temperature limit performance		Colloidal stability, %	Number penetration at 25 0 C, M, 10 -4	Tensile strength at 20 0 C, Pa	Water resistance	Viscosity at 0 0 C and 10s -1, Pass
Lubricant brand	Dispersed medium	Thicken- tel	Temperature boiling, 0 C	lower	upper	Colloidal stability, %	Number penetration at 25 0 C, M, 10 -4	Tensile strength at 20 0 C, Pa	Water resistance	Viscosity at 0 0 C and 10s -1, Pass
Litol-24	Petroleum oil	Lithium soap, anti-oxidation, viscous					220-250	500- 1000	Waterproof
Grease No. 158	Petroleum oil	Lithium Potassium Soap					310-340	150-	Waterproof
Fiol-2	Petroleum oil mixture I-50 and spindle	Lithium soap, viscous, molybdenum disulfide					265-295		Waterproof

Grease No. 158, recommended for lubrication of driveshafts, is not a complete replacement; it prevents seizing and scuffing of rubbing surfaces under high loads, and has good water resistance, which corresponds to the operating conditions of driveshafts of timber trucks. However, the operating conditions of timber trucks contribute to the leaching of lubricant and its leakage from the splined joint of the shaft if the seal is broken, which limits its service life and requires frequent replacement. The grease consumption rate is 0.25 - 0.30 kg per 100 liters of total fuel consumption. A substitute may be Litol-24.

Litol-24 is a unified lubricant, has good water resistance, can withstand a wide temperature range and has good mechanical resistance; it does not harden when heated. For a long time it remains operational at +130 0 C. (Operating temperatures of splined joints of cardan shafts are within +60 0 C). The substitute is improved quality grease Fiol-2.

Fiol-2 is a multi-purpose lubricant containing antioxidant, viscosity, anti-corrosion and anti-wear additives. It is waterproof and operational in a wide range of speeds and loads. This lubricant has good preservative properties.

Table 2 shows the results of measurements of friction forces in a spline joint with the tested lubricants.

Table 2 - Dependence of friction forces in a spline connection cardan shaft during compression depending on the operating time of the shaft and the type of lubricant at a loading moment M cr = 500 Nm, kN

Type of lubricant	Working time, hour
Type of lubricant
Litol -24	5,33	3,185		Badass
Grease No. 158	2,85	2,67	2,18			Badass
Fiol-2	2,49		2,415	2,35	2,33		2,18	2,75	Badass

From Table 2 it can be seen that at the initial moment (run-in period) the friction forces are quite high, then they decrease or remain constant (for example, for Fiol-2 lubricant) until scoring occurs. The appearance of scoring causes a sharp increase in friction and wear forces. If a shaft with a scuff is continued to be tested, the scuffed zone quickly expands, causing heating of the friction zone, which leads to an increase in friction forces and intensive wear of the splines. The lubricant thins out and loses its anti-friction properties.

Tables 3 and 4 present data on wear of the shaft splines and propeller shaft bushings.

Table 3 – Dynamics of wear of shaft splines depending on the type of lubricant used at a loading moment M cr = 400 Nm, mm

	Working time, hour


Grease No. 158

Table 4 – Dynamics of wear of bushing splines depending on the type of lubricant used at a loading moment M cr = 400 Nm, mm

View lubricants	Working time, hour
View lubricants
Litol-24		0,048	0,366	Badass
Grease No. 158		0,017	0,05	0,217	0,667	Badass
Fiol-2		0,008	0,015	0,015	0,005	0,005	0,017	0,002	0,025	Badass

The wear pattern of the splines indicates the presence of so-called hot seizing, since the destruction of a thin oil film occurs under the influence of load and elevated temperatures in the contact zone of bodies, where foci of seizure are formed. This process is characterized by intense wear, as evidenced by the data in the table.

The quality of lubrication is the most important factor influencing the process of seizing and wear of splines. top scores During testing, Fiol-2 lubricant showed that the spline joint worked without noticeable wear until scuffing appeared, i.e. as long as the lubricant retains its functional properties. Grease No. 158 occupies an intermediate position between Little-24 and Fiol-2 greases. The operating time of the spline connection before the appearance of scuffing with Litol-24 lubricant was 20 hours, with lubricant No. 158 - 60 hours, with Fiol-2 lubricant - 140 hours.

Conducted studies of the performance of lubricants in the splined joint of cardan shafts of Zil and KamAZ vehicles showed that the spline joint has the shortest service life with the currently used Litol-24 lubricant, and the longest with Fiol-2 lubricant.

The frequency of lubricant replacement should be reduced to 10,000 km in order to eliminate the occurrence of scuffing in the splined joint of cardan shafts of timber road trains.

Literature

Bykov, V.F., Kapustin, R.P., Shuvalov, A.V. Study of the performance of cardan shafts of timber trucks / V.F. Bykov, R.P. Kapustin, A.V. Shuvalov. //Operation of timber rolling stock. Interuniversity collection - Sverdlovsk: Publishing house UPI im. S.M. Kirov, ULTI named after. Lenin Komsomol, 1987.- pp. 11-14.

Vasilyeva, L.S. Automotive operating materials: Textbook for universities / L.S. Vasilyeva - M.: Nauka-Press, 2003. - 421 p.

Baltenas, R, Safonov, A.S., Ushakov, A.I., Shergalis, V. Transmission oils. Greases / R. Baltenas, A. S. Safonov, V. Shergalis - St. Petersburg: DNA Publishing House LLC, 2001. - 209 p.

The driveline of any car is subject to a specific load, which mainly falls on the needle bearings of the hinge mechanism. Its maintenance requires not only special lubricant for crosses, but also a specific tool. The further operation of the car depends on this and a number of other factors.

The term " cardan shaft"began to be used from the time Gerolamo Cardano became interested in this unit. Since then, the unit has been called exactly that and nothing else.

The device of the cardan transmission and its role

The main task of the driveshaft is to transmit torque from the engine to the wheels. It provides a connection between secondary shaft gearbox and drive shaft of the rear or front axle. This is in cases with rear or front wheel drive. IN all-wheel drive models front and rear axle connected to the transfer case shafts.

The main node of this connection is the hinge, which in turn contains at least important detail- cross. And as you can understand from the name, it is made in the form of a cross. At each end there is a cup with a needle bearing, which is separated from the body by means of rubber or plastic o-ring. In the absence of lubricant for universal joints and bearings they quickly fail. The size of the crosspiece is different for each car.

Diagnostics

Carrying out any repairs is impossible without first diagnosing the vehicle. And since the crosspiece is the central link in the cardan transmission, it is worth taking a more responsible approach to its inspection.

Typically the problem appears:

noise;
whistling;
hum;
strong vibration;
clicks;
metallic grinding or crunching sound.

This can especially be felt when starting off, or while the car is moving, or when changing gears. In some cases, the malfunction may be hidden, so it is extremely important to detect the breakdown in a timely manner.

Currently, in many car services, diagnostics of car parts, including the chassis, are carried out on modern equipment. This allows you to quickly and with maximum accuracy detect a breakdown and determine whether there is lubricant for the crosspieces or not at all. Depending on this, one or another method of liquidation is selected.

Consequences of ignoring a malfunction

It is worth noting that if any detected breakdown is not corrected, the consequences may be different. And since the speech in in this case When it comes to a cardan drive, ignoring the breakdown can threaten the life and safety of the driver and passengers. Moreover, in some cases the consequences are irreversible.

You need to be responsible to yourself, since not only the driver himself is at risk, but also the surrounding participants traffic. And if a car enthusiast is accustomed to treating himself and his car negligently, then everyone else should not suffer because of this.

Simple procedure

It is most convenient to inspect the driveshaft in a pit or drive the car onto a lift. Next you need to install the gearbox lever in neutral position and you can proceed directly to a visual inspection.

Particular attention should be paid when assessing technical condition seals and hinge. Then, holding the crosspiece with your hand, try to rotate the cardan. If play is detected, which is very easy to notice, the part needs to be replaced. If noises and squeaks are heard when the cardan rotates, most likely the crosspiece itself is in order and you need to change the lubricant for the crosspieces.

It is worth noting that there are two cross-shaped parts and each one must be inspected. And since the rear cardan is attached maximum loads, then this cross suffers most often. In addition, when the car is moving, moisture and dirt get onto the rear driveshaft.

As you can see, the entire procedure for inspecting the cardan is simple. It is possible to do it yourself. But in any case, it is better to contact a specialist if possible, as he can give useful recommendations.

List of main faults

Typically, the crosspiece in the cardan transmission lasts a long time, and its service life is calculated at approximately 500 thousand km. However, in reality, everything is not so and after 50-100 thousand km the crosspiece already needs to be replaced. Moreover, this is influenced by a number of factors:

terms of Use;
manufacturer;
quality of materials used.

Frequent movements around rural areas also contribute. Dirt and potholes - all this significantly reduces the already short period of operation of the hinge. Here, lubricant alone for the cardan shaft crosspieces will not be enough.

The list of the most common crosspiece malfunctions includes ordinary inattention during a scheduled inspection. In some cases, the lack of lubrication is not given due importance. And subsequently the cross will make itself known accordingly.

Other common malfunctions include the following cases:

a noticeable play of the cross appears;
the needle bearing wears out;
wear occurs on the crosspiece itself;
leaked lubricant or its complete absence;
destruction of sealing rings;
while the car is moving, you can hear a metallic ringing;
near universal joint a crash is heard.

No matter how reliable the crosspiece is, sooner or later it will fail. Due to this the best option To prevent this part, it is to inspect it every 10-15 thousand kilometers. It also doesn’t hurt to make sure there is lubricant for the crosspieces.

And for those car enthusiasts, in particular who own jeeps, who like to take mud baths, check the condition cardan transmission worth it after every such trip.

Features of Needle Bearing

In addition to the crosspiece, the cardan transmission also includes another necessary element - a needle bearing, which is a type of roller product. Its home distinguishing feature lies in the size of the bearing, which allows, if necessary, to dispense with the inner ring. This is achieved due to the ability to withstand large axial loads.

The use of a needle bearing implies some restrictions on the use of lubricants. When deciding which crosspiece lubricant is best, it is not allowed to use products with solid additives that have a crystalline structure. It's all about graphite or molybdenum disulfide, which are usually added to some lubricants. These components can cause the needles to jam, which leads to increased wear details.

Cardan maintenance

High-quality maintenance of the cardan transmission consists of timely lubrication of the parts. Typically, for lubrication, many workshop technicians use a special oil can with a convenient spout for access to hard-to-reach parts. An alternative to this tool is a regular syringe. The lubricant itself must be of high quality and only from a reputable manufacturer.

Lubricant manufacturers attribute their products to high operational properties, including versatility. For example, a product Liqui Moly for lubrication of crosspieces and bearings. For older cars, there were strict requirements regarding the types of lubricants. Now the situation has radically simplified. However, it is better to purchase products whose characteristics are best suited for lubricating driveshaft parts.

Features of the cardan lubrication process

As a rule, the cardan is lubricated directly on the spot, that is, without removing it from the car. In theory, there is nothing complicated here, but in reality, difficulties inevitably arise during the process. First of all, using a syringe can create a dangerous illusion. The fact is that minimal visibility gives rise to a false feeling that the lubricant has gone where it is needed, although in reality this is not the case. The seals should literally be bathed in grease.

Also, you should not use a product that accidentally spilled on the floor due to carelessness. As a result, upon contact with another surface, Liqui Moly lubricant for crosses (or any other) loses sterility, which is unacceptable.

In most cases, the process drags on for an indefinite period of time. Often in the following days the work is completely forgotten. Therefore, it is advisable to completely dismantle the connection. This will allow us to produce higher quality visual diagnostics cardan and lubricate its parts well. Afterwards, all that remains is to install everything in its place.

One of the best

One of the best means for lubricating cardan crosspieces is a lubricant from the Liqui Moly brand. As the manufacturer himself assures, lithium soap-based grease is ideal for servicing driveshaft crosspieces. The product is also suitable for lubricating sliding and rolling bearings that operate under normal conditions and at medium and high temperatures.

Lithium grease for cardan shaft crosspieces contains special components and additives, which increases its service life. The versatility of the product allows it to provide good sealing. Besides this, there are other advantages:

increased stability in conditions of high humidity and dust;
resistance to hot or cold water;
friction of lubricated parts is reduced;
The product has good ability to absorb compression.

You can also highlight resistance to aging and corrosion. What about the range? operating temperature, then it ranges from -30 to +125°C.

Blue remedy number 158

During Soviet times, blue grease for crosspieces “158” based on a lithium-potassium complex was in great demand. Currently, lubricants using a lithium thickener have begun to be produced. This made it possible to significantly increase the upper operating temperature range, which is now +165°C or more.

Characteristic distinctive feature, as you can understand, lies in the shade of the lubricant number 158. However, this does not say anything specifically about the properties. For a number of manufacturers, this step is justified in order to identify products and give them an attractive presentation.

IN European countries For this purpose, pigments are used that color the lubricant not blue, but green or red. The color design may also vary if, for example, the same lubricant for Liqui Moly universal joints is ordered by different suppliers.

Successful advertising

Thanks to the efforts of many marketers, blue grease is now a sign of versatility and High Quality. For the first time, a blue-colored lubricant was produced by ExxonMobil and Chevron in the West. The product unexpectedly showed itself with best side under normal operating conditions of almost any equipment.

Now blue lubricants- this is already a standard of quality. They are especially popular in the area Russian Federation. Find wide application when servicing not only various types of transport (road, rail, water, tractor, special equipment), but also different industrial equipment. And the question of what lubricant to inject the crosspieces with is resolved on its own.

Greases are widely used in cases where the operating conditions of the mechanism preclude the use of regular oils. Recently, the role of special lubricants has increased significantly, which make it possible to ensure high-performance operation of modern and expensive equipment. There are two main ways to improve the effectiveness of lubricating greases to reduce friction and wear. The first way is the use of chemically active additives that increase the ability of the lubricant to withstand heavy loads. The second way is the use of greases containing fine particles of a special substance or compound (in the form of the finest plate-like inclusions) - molybdenum disulfide, graphite or ceramics. In developing advanced high performance lubricants Liqui specialists Moly uses both of these methods successfully. At relatively low pressure, grease behaves like a solid. But as soon as the pressure increases, the product begins to resemble a liquid in its properties. This is where its main difference from conventional oils lies.

Wide range of lubricating greases

The Liqui Moly company produces lubricants various types with varying degrees of viscosity, which can be used:

in cars and trucks;
in agricultural machines;
in equipment used in the paper, food, clothing, textile industries;
in devices used in household.

A wide range guarantees that you will definitely find a product that will help you effectively solve the problems you face. Detailed information You will find information about all our lubricants on the website. Liqui Moly lubricants are manufactured on both mineral and synthetic bases. They are offered to customers in convenient packaging. In our catalog you will find lubricants that are suitable for individual use in personal car, in your own household, and can also be used by various service providers. An important advantage of such products is the ability to use them where conventional ones cannot be applied. lubricating oils. The composition of each product is carefully thought out, which makes it possible to maintain the operation of components and mechanisms for a long time. required level. The developers used various additives to give them anti-corrosion, antioxidant and other properties. Liqui Moly lubricants can be used in wide range temperatures; they do not wash out cold and hot water, withstand significant pressure, effectively prevent jerking and vibration, and reduce wear when parts rub against each other. Do you have questions about Liqui lubricants Moly? Contact the specialists of our company. They will tell you about the properties of the product, the features of its application, and also help you make a choice.