Lubricants for Sls type tripod. Lifetime lubrication for Sls Tripoid Lubrication for an internal shrusch Thripod Article

Sls - hinge of equal angular velocities, which in use is called "grenade" - a mandatory attribute of any modern car. In the car it is used to transmit torque and turns. This should ensure the transmission of rotational motion from one semi-axis to another with a constant change in the angle, under which they are placed relative to each other. This design is typical for cars with independent suspension wheels.

Design

There are several varieties of hinges of equal angular velocities, which are developed by different inventors and different time. The most famous and most often used in the automotive construction of the structure, created on the basis of the invention of the Alfred Trapper (1927).

The design of the cutting of the shruss is simple and includes only 4 details:

1. Inner clip consisting of grooves.
2. Separator holding balls.
3. Six balls.
4. Spherical bowl with a slave shaft, which plays the role of the housing.

Such a design of the hinge allows you to carry out uniform transmission of motion.

It works as follows:

• there are special spherical grooves in the case, their number should be equal to the number of balls;
• balls are between a fist and hull.
• the force of the drive shaft is transferred to the clip and on the slave shaft by means of a fist and balls;
• when the angle between the shafts changes, the balls move along the grooves, passing the force.

In order to ensure the uniform movement of the vehicle for each wheel, two shurts are installed - external and internal. How they work, you can see here:

Cuts internal provides torque transmission from gearbox to the shaft, and the external rotates the wheel hub directly.

The further development of the idea embedded in the invention of A.Rupppa, led to the creation of a "tripod" type hinges, in which spherical rollers use, and the grooves with the changed cross section are not parallel to the hinge axis, and at an angle.

Tripoid Shrews

The main difference between the triphide shrus from the described above is that instead of ball-bearings, it uses needle. As a rule, such bearings are used in the design of an internal shrus.

Tripoid Sls - this is a very "gentle" knot, which can fail if ingested inwards even a minor amount of dirt. It is also very demanding for the consistency and operating temperature of the lubricant. Mind and additives that are added to lubricant.

Due to the fact that the tripoid Sls is installed in the immediate vicinity of hot elements car EngineThe conditions for its work are characterized by the presence of an elevated temperature, which can reach 160 degrees Celsius. In addition, like all the types of roller bearings, needle bearings require the use of grease with anti-promotional and anti-wear properties, in which there are no solid lubricating additives. The presence of such additives can lead to the occurrence of jammed lubricant clots, which accelerate the wear of a triphyde shrus.

Lubricant

In order to ensure the trouble-free operation of the hinges of equal angular velocities, at the manufacturers of vehicles, they lay inside the triphide shrus "lifelong" lubricant, made using a synthetic complex thickener. The same lubricant - the polyurea - must be laid on a service station, where they produce the replacement of these nodes, new ones.

Important! Lifetime lubricant does not mean that tripoid will work forever. Simply its service life commensurate with the service life of the node as a whole.

Currently, the domestic industry produces a lubricant TERMOLUX P150, which includes:

• basic oil whose viscosity at 40 degrees Celsius is 145 secrets;
• thickener on a polyurea.

Such a lubricant embedded inside the tripoid screen turns it into a practically maintenance-free node. If necessary, you can dismantle from the car, disassemble and lubricate the tripoid shrus and do it yourself.

Tip! In no case can not be used to lubricate a tripoid shrus blue lubricant №158. In color, it is similar to the Lubricant TERMOLUX P150 or MOBSL POLYREX EM, but is manufactured using a mixed lithium-potassium thickener, which retains its work properties only at a temperature not exceeding 110 degrees Celsius.

Good day! Today, I would like to answer the numerous questions of the forum about why it is functionally and constructively close hinges of equal angular velocities (Solus) of the car semi-axes, you need to lubricate with different lubricants and why it is impossible to apply a single lubricant for lubrication.

Let's deal with together in the design of these nodes.

So, the outer hinge of equal angular velocities of the drug - by the name of the inventor of Alfred Drugp - consists of only four parts: a spherical bowl with six grooves and a slave shaft, an internal spherical closure with response grooves, separator and six balls transmitting torque between clips and shafts of the semi-axis . A feature of such a hinge is high specific pressure in the contact zone of balls and grooves, which strongly limit the resource of this node and predetermine the type of lubricant with special protection under boundary friction conditions and high contact pressures. For these purposes, lubricants are traditionally used. mineral Oilthickened by a lithium thickener containing the additive of disulfide molybdenum (MOS 2 ). Molybdenum disulfide protects the working parts of the external Sls from wear and guarantees the long service life of its service, commensurate with the service life of the car. Thus, lubricants without solid additives are not capable of providing an acceptable resource of the disc shrus and, therefore, the external shoes we lubricate with lubricants with a 3% disulfide content of molybdenum. The most common lubricant with the disulfide of Molybdenum in Russia became the lubricant of the Argo. By operational properties Not inferior to such common overseas lubricants as MobilgreaSe Special.

We are now consider the design of the internal Slusion type "Tripod" and the features of its work.

Slots "Tripod" also consists of four main parts: a glass with longitudinal grooves and a leading shaft, a three-shoe clip with three needle bearings and a slave. The design of this Schrus also lies the principle of the filing hinge, but the characteristics of its work are elevated temperatures caused by the proximity of the engine, as well as the absence of high specific pressures, which is provided by the use of needle bearings in spikes. As you know, needle bearing, being a kind roller bearingRequires the use of "pure" lubricant with anti-wear and anti-promotional properties without solid lubricating additives. In this case, the solid additions of the internal Sls are contraindicated, as they can form between the rolling-wedges rolling bodies and cause elevated wear of the node. Thus, the nature of friction in the tripod hinge is reminiscent of the needle bearing of the Cross cardanian Vala. And in this case, I want to warn from the use of blue automotive lubricant "158". The fact is that the lubricant "158" is made on a mixed lithium-potassium thickener, which retains performance at temperatures of no more than 110 ° C, while the inner spruce in the immediate vicinity of the engine can be heated to 140-160 ° C. In conditions of such temperatures, lubricant is needed on the complex-lithium thickener or polyurea. Moreover, the lubricant on a synthetic polycarbamide complex - a polyurea is considered life and is usually laid in new Sls supplied to conveyors automotive factories. In the service station, the use of lubricants on the polyurevine is due to the need to bookmark the fresh lubricant into a new Slusion in the event of replacing this node during the repair of the car. I will make a reservation that the life of lubricants on the polyurevine means the commensity of their service life with the service life of the lubricated node, but does not mean the eternity of these nodes at all.

What looks like russian market Lubricants on a synthetic polycarbamide thickener?

In the Russian market, the lubricants on the polyurevine are represented by all world manufacturers and, of course, the Mobil Polyrex EM lubrication from Exxonmobil. They occupy the greatest niche of this product. And what is offered russian manufacturers? NEW B. this type Lubricants on the domestic market is grease "" from the Russian company Argo. Consider in more detail what benefits to us are offered under this lubricant.

First of all, the thickener on the polyurea and base oil viscosity 145 of the CST at 40 ° C determines its use in the already mentioned tripoid silver a passenger car As a lifetime, turning the Sls into the maintenance-free node. Argo is the perfect lubricant for the inner Slus. This is the most important and massive application and purpose.

By the way, here specifications This lubricant is compared with Mobil Polyrex EM.

Attention is drawn to the high load of welding 4900 N, which guarantees the highest protection of parts from the bulk at the highest overloads. This in the best way contributes to an increase in the resource of needle bearings of tripoid silver (internal "grenades") of the front-wheel drive car. The combination of the antioxidant properties of the thickener and high-contamination properties just cause the "life" of our Slus and lubrication in it.

Here, in fact, everything that it was important for us to find out about the features of tripoidal silver and lubricants for him.

This is forgiven to new meetings!

We reviewed the best species Shrus lubricants. Now we will tell about what should be best grease For a triphide shrus.

Immediately the question arises: and the previously voiced products do not imply lubricate this node? Not desirable. And that's why.

The outer hinge of equal angular velocities (it is called "Drugp") is constructively primitive and consists of only 4 parts: bowls, inner cutting, separator and 6 balls. Those. The node needs a composition capable of working in high contact pressures. For this work, a product containing 3% MOS2 (Molybdenum disulfide) is ideal, the same Argo ELIT M EP2, for example.

The other thing is the inner tripoid Slusion "Tripod". It also constructively consists of 4-parts, but the three needle bearing of the three-shoe clip require special care. It lies in the fact that the lubricant for a tripoid screen should operate at elevated temperatures (+140 - + 160 ° C). In addition, the needle bearing requires lubricant without the so-called solid additives, but with anti-plasive and anti-wear properties.

Such conditions satisfies the material having a polyurea or complex-lithium thickener.

The best modifications of lubricant for triphide scrus

Popular products are popular.

• Mobil Polyrex Em. (ExxonMobil).
• Argo TERMOLUX P150.

And if we look at the value of the welding load at Argo TERMOLUX P150, for example, we will see the number of 4900 N - a great indicator that guarantees high degree Protecting the details of a triphide shrus from the bully even with the highest overloads.

Can also be used as a lubricant " MS Sls Tripod».

This material does not contain solid particles of molybdenum or graphite disulfide. It is operational at temperatures to + 160 ° C. It has good anti-wear and contamination characteristics.

Welcome to you, dear blog readers!

Recently, a new popular trend in segment plastic lubricants, on the analysis of requests for the World Wide Web, there are lubricants on a polycarbamide synthetic-sled thickener - polyurea. This type of plastic lubricants differs significantly from traditional lubricants on soap thickeners, in connection with which I propose to consider the fundamental differences of the thickener on the polyurevine and the scope of these lubricants together.

So, the thickener on the polyurevine without quotes can be called unique. Here is his features.

First, the polyurevine has excellent antioxidant properties in relation to basic oil, which protect the grease from aging at elevated and high temperatures. It is this circumstance that determines the use of lubricants on the polyurea as a lifelong lubricant. Yes, it is lifelong, since this type of lubricant for the service life commensume or exceeds those nodes that it lubricates.

Secondly, the polyurevine in high temperatures is not cocking and does not form ash sediments. These features make lubricants thickened by polyvines, indispensable for use in centralized steel lubrication systems.

Thirdly, lubricants on the polyurea for a tripod have excellent water resistance, which causes their use in conditions not just high humidity, but also the dynamic effects of water. And this is metallurgy, and pulp and paper industry, and transport, and many other industries.

Finally, in fourth, the polyurea is resistant to chemically active media - acids and alkalis, which allows the use of lubricants on a polycarbamide polyurea thickener in the chemical industry.

Here are not all properties, but the main distinguishing features of lubricants on the polyurea thickener.

Let us turn to the consideration of practical examples of applying this type of lubricant.

Let's start with the most close to most consumers of the example - lubricants of a triphide hinge of equal angular velocities or simply internal lung car. Features of the operation of this node are such that the lubricant requires good high-temperature properties and service life, commensurate with the service life, actually, the Sls. The lubricant on the polyurea is exactly these properties in the best way, turning the Sls into the maintenance-free node, simplifying and having the cost of operation of the passenger car.

High-temperature properties and lifelong character are positioning lubricants on the polyurevine as well as an indispensable lubricant for bearings of hot fans and smokers at woodworking factories, cement and other industries, where heated gases are present.

The lack of a tendency to the formation of oxide, resinous and coarse deposits in the best compliance with the requirements for lubricant materials For centralized lubrication systems (TSS) steel equipment. In the TSSS of the continuous casting machines (MNFs), it is non-alternatively that lubricants on a polyurevine, preventing the lubricant system that prevents the lubrication systems system to the machines of the machine friction as a result of coking from the thermal exposure from the heat-cut metal.

What does the Russian lubricant market on the polyurea thickener look like?

The most widely in the market of Russia lubricants on the polyurevine are represented by Shell products and, of course, Mobil Polyrex email lubrication from Exxonmobil.

They occupy the greatest niche of this product. And what are Russian manufacturers offer? The novelty in this type of lubricants in the domestic market is the lubricant "Termolux P150" from the Russian company Argo. Consider in more detail what benefits to us are offered under this lubricant.

First, the thickener on the polyurevine and the base oil viscosity 145 of the CST at 40 ° C determines its use in the already mentioned tripoid carcass of the passenger car as a lifetime, turning the silver into the non-lifted node. Argo TERMOLUX P150 is the perfect lubricant for the internal Slus. This is the most important and massive application and purpose.

Secondly, the polycarbamide thickener - the polyurevine makes the Argo TERMOLUX P150 by an indispensable lubricant for the bearings of electric motors operating at elevated and high temperatures, as well as bearings of fans pumping the heated gases. This application is also the most important and, practically, non-alternative for this equipment.

By the way, this is the technical characteristics of this lubricant in comparison with Mobil Polyrex EM.

Argo. TERMOLUX. P.150

Attention is drawn to the high load of welding 4900 N, which guarantees the highest protection of parts from the bulk at the highest overloads. This in the best way contributes to an increase in the resource of needle bearings of tripoid silver inner "grenades" of the front-wheel drive car. The combination of the antioxidant properties of the thickener and high-contamination properties just cause the "life" of our Slus and lubrication in it.

Here, in fact, everything that it was important for us to find out about lubricants on a relaxed polycarbamide synthetic thickener - polyurea.

That is forgiven to new articles in this blog!

Today, the Sls (hinge of equal angular velocities) is one of the mechanisms that most effectively transmits the torque from the gearbox to the drive wheels, so the maintenance of this mechanism, especially the lubricant of the triphide scrus, ensures reliable operation and safe operation. Shruses are either internal or external.

Construction of a triphide scrub

Structurally tripoid hinge is made in the housing in which the three-beam plug is located. It is pressed on the weekend tree. To ensure good rotation on each ray, the plugs are attached rollers that have a hemispherical shape. They rotate with the help of (needle bearings).

In order for this mechanism to serve for a long time and reliably, it is necessary to ensure constant care and timely lubricant. Unfortunately, experts note its insufficient lubrication mechanism. Since it is a boot where the lubricant is stored. Since the boot protein itself, made of rubber or plastic, is a rather vulnerable part in mechanical impacts arising during traffic bad road. Such an impact leads to its damage, leaving the lubricant and as a result, failure of the entire mechanism of the shruss.

The use of needle bearings provides high tripoid hinge resistance to wear. In addition, the loss of torque is significantly reduced with the friction of the elements of the node itself, and sets certain requirements for the properties of applicable lubricants.

They must have a given consistency and in their composition appropriate additives that allow them to operate in a given temperature range. In addition, it is necessary to take into account the specifics of the work of both shruses, both external and internal.

Requirements for tripoid shrus lubrication characteristics

The following requirements apply to lubrication of such devices:

1. Baseline viscosity. It should form oil films of the required thickness. Such a film prevents overheating and reduces excess friction of shruses.
2. Channel formation. This lubricant characteristic determines the ability to prevent overheating due to its foaming.
3. Capple temperature. Such a temperature should largely exceed the maximum operating temperature. This will ensure protection in the process of work from oil waste.
4. Type of thickener. The use of appropriate thickeners and allows you to achieve the desired dropping point, to provide the necessary channel formation characteristics and create conditions for protection against oil waste.
5. NLGI class. The numerical characteristic of this class determines the lubricant consistency. For shruses, it should be up to 2 units.
6. Non-promotional additive. This additive is used to reduce friction and wear of rotating parts.

Offered lubricants for a triphide scrus

The market offers motorists, well-proven lubricant, Sls 4. It has increased strength and necessary viscosity And used, including in internal tripoid shruses. Increased strength allows it to be reliably held on rotating items.

Another lubricant offered on the market for such aggregates is NLGI 1. It is designed directly to lubricate needle bearings. It is good properties that allow it to apply it in internal and external hinges.

Such properties are experts:

• soft consistency that creates good conditions for penetration even in the smallest gaps of the unit;
• complete absence in this lubricant of solid additives;
• the use of medium viscosity oils in its composition, ensuring reliable operation of the hinge, both at low and high temperatures;
• successfully selected composition is significantly improving the time of trouble-free operation of the entire unit.

All car manufacturers themselves indicate the list of allowed lubricants for each of the nodes and the aggregates of their car, including for the shruses. For example, a well-known Toyota manufacturer offers a wide list (about ten) of original lubricants for mandatory use in hinges and permissible analogs (about twelve).

This example clearly shows how motorists simplify the task in search of the required lubricant, car manufacturers themselves. It should be remembered that at least the basis of the tripoid hinge design and make up needle bearings used in other nodes and units of various techniques, however, industrial lubricants for them, such as lubrication number 158, is strictly prohibited.

The frequency of replacement of lubricant in triphide shurts

To maintain a shruss in working condition, it is necessary to observe the frequency of lubricant replacement. It is made in the following cases:

• the replacement period is determined by the manufacturer, with the established then;
• if the old hinge is replaced;
• if the replacement of the anther is carried out.

Besides right choice Lubricants It is also necessary to properly lubricate the unit itself to be confident in his reliable work. Usually, the instruction on lubricant is shown on the package.

In addition to the listed lubricants, the industry offers lubricants for cumshes based on a synthetic polycarbamide complex. They are considered universal and can be used for any types of shruses. Usually such a lubricant is used as "lifelong". She lubricates new shruses, at the factory manufacturer.