Rear hub VAZ-2108: description, design, dimensions and diagram

It is much more common to remove the hub to replace the bearing. This is the most vulnerable element of the structure. Driving with a broken bearing will not bring much pleasure, as extraneous vibration and noise will appear, which intensifies when accelerating and cornering.

Rear hub VAZ-2108: description, design, dimensions and diagram

The wheel is attached to the rear hub of the VAZ-2108 using four bolts.
There is also a brake drum here, with the help of which the car stops. The hub itself fails very rarely; it is usually replaced when the inner surface or threads into which the wheel mounting bolts are screwed are damaged. It is much more common to remove the hub to replace the bearing. This is the most vulnerable element of the structure. Driving with a broken bearing will not bring much pleasure, as extraneous vibration and noise will appear, which intensifies when accelerating and cornering.

Causes of problems

The hub is a very durable part of a car disk, so breakdowns rarely occur. But still sometimes deformation of the spare part occurs. In addition, the rear hub is more wear-resistant than the front hub, since it is less subject to heavy loads.

"Road factors"

Ingress of moisture and dust eventually displaces the lubricant, and the disc begins to overheat as a result of excess friction.

Insufficient lubrication

It ranks first among the causes of failure of this spare part.

Excessive loads

In the average area this is unlikely. Usually found in mountainous areas.

Strong “tightening” of fasteners

It often happens that the bolts are screwed in more than necessary - this is how the threads wear out.

How to check a wheel bearing

If the rear wheel bearing of a VAZ-2108 breaks down, you will hear a characteristic howl coming from the trunk. Try to listen to which direction the sound is coming from. This will allow you to reduce the time spent searching for a faulty bearing. To make a diagnosis, you need to lift the wheel and then rotate it by hand.

If the bearing is in good condition, there will be no noise. The wheel should rotate without jamming. But if the bearing is faulty, then a strong noise will appear, as well as a metallic sound, as if the balls inside the bearing are rolling. The louder the noise, the greater the wear on the wheel bearing. It is advisable to replace both sides at once, this will improve the efficiency of the repair.

What tools will you need?

Before replacing the rear wheel bearing of a VAZ-2108, you will need the following tool:

A 30" head and a knob, as well as a piece of pipe. You can even use a spanner wrench, but it must be strongly curved to make it easier to install into the hub hole on the nut.
Punch or thin chisel. It is advisable to sharpen the chisel in advance. This tool is needed to straighten a jammed edge on a nut.
It is advisable to have three-legged and two-legged pullers. The first is necessary to dismantle the wheel hub, and the second to remove the inner race of the bearing.
Pliers for removing and installing retaining rings.
It is advisable to have a puller on hand to remove and install the bearing into the hub.
You will also need any type of keys for “12”, “13”, “14”.
You can't do without a hammer and wooden spacers.

Be sure to buy a good bearing, it is advisable to also buy a nut. It is not recommended to use the old one. You can purchase an assembled VAZ-2108 rear hub, this will greatly facilitate repairs, but will hit your wallet hard.

Bearing Specifications

The product catalog number is 256706, it has the following characteristics:

The diameter of the inner race is 30 mm.
The diameter of the outer ring is 60 mm.
Weight – 400 gr.
Bearing width – 37 mm.
Inside there are 28 balls with a diameter of 9.525 mm.
Dynamic load capacity of at least 30.1 kN.
Static load capacity 25.9 kN.
The bearing operates normally at 6500 rpm.

There are only four manufacturers of these products in Russia:

JSC SPZ (Saratov). Produces the highest quality and durable bearings. The cost is quite low.
GPZ-23 (Vologda). It produces very good elements, which are slightly inferior to those from Saratov (denoted by the abbreviation VBF).
Samara SPZ-4. The quality of the products does not differ, but the cost is very low.
GPZ-20 in Kursk. The plant was engaged in the production of high-quality products; currently only copies of previous years of production can be found on the shelves.

Main characteristics and varieties

The rear wheel bearing on the VAZ-2108 is produced under catalog number 256706. It has the following technical characteristics:

weight, g – 400;
number of balls, pcs. – 28;
ball diameter, mm – 9.525;
static load capacity, KN – 25.9;
dynamic load capacity, KN – 30.1;
rated rotation speed, rpm – 6500.

The VAZ-2108 rear wheel bearing number may be different. If a store offers you a product marked 537906, don’t be surprised. This is a high-load bearing. Some of its characteristics differ from the characteristics of the standard spare part:

weight, g – 511;
static load capacity, KN – 90.1;
dynamic load capacity, KN – 64.8;
rated rotation speed, rpm – 5000.

As you can see, the reinforced rear hub bearing on the VAZ-2108 has increased resistance to loads. But at the same time, its rotation frequency should not exceed 5 thousand rpm. Such products, when properly used, can “walk” freely up to two hundred thousand kilometers.

Preparation for repair

All work must be carried out on an inspection pit or overpass. But if you do not have such amenities, you will have to hang the rear of the car so that it is above the ground. The procedure for carrying out preparatory work:

Place the car on a level surface.
Place blocks under the front wheels.
Turn on first speed.
Loosen the nut that tightens the handbrake actuator (optional).

After this, it is necessary to loosen the bolts securing the rear wheel on which the repair is being carried out. It is also advisable to unscrew the nut on the hub, and then rip it off using a “30” wrench. You can then hang up the side of the car to make further repairs.

Removing the hub

To remove the rear wheel hub of a VAZ-2108, you will need to perform a few simple manipulations:

Completely unscrew the wheel bolts.
Remove the wheel.
Unscrew the nut that is located on the hub.
Using a 12mm wrench, unscrew the studs that secure the brake drum to the wheel hub.
Place these pins in adjacent holes and tighten them evenly. This way you will be able to move the brake drum from its place. If this does not help, you need to carefully knock the drum out of its place using a hammer and a wooden spacer.
Use long bolts; they need to be screwed into two opposite holes on the hub. It is necessary to tighten them until the hub begins to move out of its place. You can also use a three-jaw puller for this purpose. The last resort is to install the back of the wheel and pull it with your hands.
Sometimes the inner race of the bearing remains on the axle. It needs to be removed. To do this, first, using a chisel, you need to slightly move this ring on the axis, and then install a puller with two legs. After dismantling, be sure to check that there is no damage to the axle. Otherwise, clean the metal with a fine file.

At this point, dismantling the hub is completed, it is in your hands, and you can replace the bearing. The dimensions of the rear hub of the VAZ-2108 are the same as those of similar models that were produced under the names “Samara” and “Samara-2”.

Changing the rear wheel bearing with your own hands

Replacement of the VAZ-2108 rear wheel bearing is carried out in the following order:

We install the car on a flat surface, fix the front wheels by placing wheel chocks under them.
Remove the cap covering the hub nut.
Using a chisel (core), we bend the bent edge of the hub nut so that it does not interfere with its unscrewing.
Using a 30mm socket with an extended handle, unscrew the nut. If it does not give in, treat the threaded connection with anti-rust liquid.
After unscrewing the nuts, unscrew (not completely) the wheel mounting bolts.
We lift the body with a jack, fix its position with stumps (bricks), and unscrew the wheel bolts. We dismantle the wheel.
Using a key set to “7”, unscrew the guide bolts on the drum (2 pcs.).
We remove the drum. If it is not removable, we treat the place where it fits onto the hub protrusion with a rust-fighting liquid, and then knock it down using a hammer and a wooden spacer.
Now completely unscrew the hub nut.
Using a special puller, we dismantle the hub, grasping it with “paws” and rotating the nut. If you do not have such a device, take the removed wheel and screw it to the hub with the back side. Use the wheel as a lever.
Remove the hub from the axle.
Using long-nose pliers or special pliers, remove the bearing retaining ring.
We place the hub in a vice and, using a hammer and a piece of pipe, carefully knock out the bearing.
When the bearing is knocked out, lubricate the inner surface of the hub with grease.
We install the new bearing without removing the hub from the vice.
We place a wooden spacer on top of the bearing and, hitting it with a hammer, hammer the part into the hub until it stops.
We put the locking ring in place.
We put the hub with the new bearing on the axle. If she sits down tightly, we help her sit down using a hammer and a spacer.
Screw on the new hub nut. We tighten it until it stops. The hub should still move inward.
Install the brake drum and secure it with guide bolts.
We mount the wheel.
Remove the jack and tighten the hub nut completely. If you have a torque wrench, observe the tightening torque (186.3-225.6 Nm).
We bend the edge of the nut, fixing its position.
We put a cap on the nut.
We jack up the body, check how the wheel rotates and whether there is any play. It is also recommended to check the operation of the parking brake.

How to remove a bearing

The most interesting thing is yet to come - you need to remove the bearing from the hub. To do this, follow these steps:

Use pliers to remove the retaining rings. If you don’t have such a tool, you can use a thin screwdriver or an awl.
It is advisable to use a special puller to remove the bearing. It is installed on the element over its entire area; when the nut is tightened, the bearing is evenly squeezed out. But if you don’t have such a tool, you can use the outer race from an old bearing. Applying blows evenly, remove the element from the seat.

The dimensions of the rear wheel bearing of the VAZ-2108 are slightly smaller than those of classic series cars. But this does not mean that they are very weak. If the bearing is installed correctly, it will last a long time.

How to recognize malfunctions

There are many signs that help identify a breakdown:

uneven wear of tires;
increased vibration;
the appearance of extraneous noise;
overheating of the disk (this means that the bearing is not working properly);
the car deviates to the side from a straight path and the body sways (these signs are explained by the fact that a working wheel ensures smooth movement, and when a breakdown occurs, imbalance occurs).

The easiest way

If all of the above is not picked up by the hearing and vestibular apparatus, then there is an optimal method. You need to push the tire with your foot to identify any play.

Installing a new bearing

Before installing a new element, it is necessary to inspect the entire internal surface. There should be no nicks or damage on it. To make installation a little easier, you can place the new bearing in the freezer for several hours and warm up the hub. But please note that it should not be heated to very high temperatures.

Otherwise, when installing a new bearing, its seals will melt, which will significantly reduce the life of the element. The bearing must be pressed in using a puller or using a clip from an old element. Be sure to secure the position of the bearing with the circlips, making sure they fit into their grooves.

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wwss75 › Blog › Front wheel spacers for maintenance-free bearing 2108

I rewrote it, corrected it, added it. part 1. HURRAY! It’s done, I’m holding the spacers in my hands. I've been wanting to make one for myself for a long time. It’s extremely difficult with a budget and purchasing via the Internet is no longer necessary. I couldn’t find it on sale in St. Petersburg and heard a price tag of 2,000 rubles. I contacted turners a couple of times and was shocked by their price of about 6,000 rubles. for work. Andryukha's old friend came to the rescue. I found the time and, according to the drawing, turned it out of 45 steel, accurate to the hundredth. I didn’t take the money :)) FRIEND! :)) I took the drawing from timur911, here is the link at www.drive2.ru/l/4438002/ In my drawing, 2 dimensions have been changed for a tighter fit of the spacer on the axle. Plus, the manufacturing accuracy of the two seating surfaces is 0.01-0.03 mm. (When making the inner surface, the turner makes dissatisfied faces and says that it is lazy and difficult to do) So, my version is a trial one! The final dimensions will become clear after installation on the car. I'll definitely write back. (A year and a half later, everything is EXCELLENT! Everything works! The drawing was corrected and correct 09/07/16.)

VAZ-2109 wheels

The desire of the owners of the domestically produced VAZ-2109 car to replace factory rims with elements with a different diameter is extremely clear.

Modern lightweight designs can improve the car's handling characteristics and fuel consumption, but, as a rule, the reason for such replacement is a simple desire to improve the appearance.

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Such an operation is not difficult to perform.

True, depending on the chosen replacement options, this is either carried out without problems, or such a procedure requires intervention in the design of the car.

What wheels were installed on different bodies and configurations?

The VAZ-2109 car is a 5-door version of the VAZ-2108. Over the entire period of production, from 1987 to 2004, the car underwent 7 modifications, including options for export. Their disk parameters also changed, although the bolt pattern always remained the same. These differences were expressed in the choice of rim width, in the size of the offset and in three options for the diameter of the circle.

But in the factory, only wheels with a diameter of 13 inches were usually installed. Wheels R14 and R15 were considered only acceptable for installation. Here are the two main brands of rims that cars were equipped with on the factory assembly line:

The first numbers of the marking indicate the width of the rim, 13 is the overall diameter, ET35-40 is the offset in mm. The standard factory disk design was a stamped steel product. Losing to its cast light-alloy competitors in a number of indicators, steel stamping has always been and remains durable, inexpensive and reliable.

Article: 21080-2901051, additional articles: 21080-2901051-00

Order code: 040023

Thread diameter - M12*1.25 L (length) - 55 S - 19 Strength class -10.9 Note: b=30

Information used: JSC "AVTONORMAL"

Passenger cars / VAZ / VAZ-2110, 2111, 21121 drawing
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Passenger cars / VAZ / Lada Kalina 1117, 1118, 11191 drawing

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Passenger cars / VAZ / Lada Priora 21728 Coupe1 drawing

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Today, in the next article in the series “Crystal VAZs or typical breakdowns of domestic cars,” we will talk about the latest developments of the Volzhsky Automobile Plant: Lada Grante and Lada Largus. Let's talk about the history of the creation of these models, as well as their characteristic malfunctions.

The series of articles “Crystal VAZs, or typical breakdowns of domestic cars” talks about typical problems and malfunctions of cars produced by the Volzhsky Automobile Plant. Today we will talk about the front-wheel drive Samara family, as well as its modern analogues.

Source

Standard disk sizes

The main technical characteristics of the rims of any car, including the VAZ-2109, are expressed by the following parameters:

Diameter. This refers to the size of the rim in inches, excluding the tire.
Rim width is the size of the tire seat in inches.
The size of the central hole for the hub.
Bolt pattern is a parameter indicating the number of holes and the diameter of the circle connecting their central points.
Overhang is the distance between the hub mounting surface and an imaginary plane passing vertically through the middle circumference of the disk.

For the VAZ-2109, two parameters were always the same:

The central hole is 58.5 mm.
Bolt pattern - 4x98.

The wheels are manufactured in three versions: R13, R14 and R15. Other factory parameters, taking into account the corresponding tires, are shown in the table.

Structure

The part has a fairly simple structure. Essential elements:

outer rim (used for screwing in bolts);
internal part (for bearings);
holes with slots (for CV joint);
protective caps;
sensor (it is sometimes included in the design).

CV joints are constant velocity joints; their main task is to transmit torque.

Hubs for different purposes have different technical characteristics. Hubs for passenger cars have the form of a hollow, lightweight cylinder, while for “heavyweights” the diameter of the part is larger.

Parameters of standard nuts

Fastening the cast disk to the hub involves the use of special bolts or nuts. It should be noted that nuts from stamped disks are unacceptable here. Firstly, because in cast specimens the conical or spherical part of the fastener is more pronounced than in stamped ones.

For example, the conical part of a bolt or nut has an angle of 60 degrees. This is done in order to increase the area of their contact with a material softer than steel. Secondly, the stamp is thinner than the casting, and when replacing the disk, the length of the bolt simply will not be enough.

It is better to immediately use the fasteners that correspond to the light-alloy wheel used, otherwise deformation of the holes, crumbling and scratches are possible.

By saving on the necessary nuts or bolts, you can irreversibly damage a more expensive element.

The softness of the metal also means regularly checking the tightness of the fasteners, especially at first and with new discs, when the material has not yet become compacted from work loads. Otherwise, under the influence of cyclic shock and vibration, the nuts may spontaneously unscrew.

Nuts must have conical or spherical washers. It is necessary to ensure that the profile of the washers exactly fits the corresponding recess in the hole of the disk being installed. Some disc models are designed to use cylindrical fasteners with flat washers.

What drives can be installed

When planning to replace old steel wheels with alloy wheels, you should choose either original products or products from well-known manufacturers who care about the quality and safety of their products.

Alloy wheels combine the following useful properties: they are lightweight, practical to use, endowed with sufficient strength and have an attractive appearance, which is aimed at transforming the entire appearance of the car.

The most common among alloy wheels are aluminum products. This is due to the fact that they are resistant to corrosion, meet strength requirements and, in comparison with other alloy wheels, remain relatively inexpensive.

Titanium alloy is the most expensive option. It also meets all the technical specifications, but at the same time has a more attractive appearance. In third place is the option using a magnesium alloy.

The latest models from AvtoVAZ use wheels with a 4x100 mounting pattern. When installing them on a 4x98 hub, you should use studs with an eccentric to compensate for the difference of 2 mm. To install disks with other mounting patterns, you will have to use the appropriate adapters (spacers).

You must understand that installing wheels larger than 15 inches is impossible without interfering with the car’s design.

Maximum and minimum acceptable parameters of non-standard disks

The size of the wheel arches on the VAZ 2109 limits the possibility of installing wheels with a diameter larger than R15. It turns out that any non-standard specimen must fit into the dimensional frame of 13-15 inches. It is impractical to look for something smaller, and to install a larger diameter, you will need to increase the wheel arch, that is, change the body structure.

Limiting yourself to the given parameters of the arch, you need to look at the other indicators of the non-standard disk. To connect parts with different bolt patterns, you can use adapter spacers. In this case, the problem of incompatibility of the disk with the hub according to the holes is quite easily solved.

The main thing is to choose suitable fastenings. The width of the rim, according to the limits set by VAZ designers, is limited to 4-7 inches. Exceeding these parameters may impair vehicle handling and raise questions during registration.

The permissible disc overhang is directly related to its width and design. In the factory assembly, this figure ranged from 30 to 45 mm. You can change the offset using spacers.

But you need to remember that as the offset decreases, the track width increases, and wide tires may exceed the established overall dimensions of the vehicle. The central hole of a non-standard disk must be at least 58.5 mm.

Although the options for replacing disks on a VAZ-2109 are limited to certain parameters, there are still quite a lot of them. But, first of all, you should still pay attention to original products that are maximally adapted to the given car. This is simpler, safer, and more profitable from a financial point of view.

Front wheel bearing size VAZ 2108

Any spare part of a modern car must be perfectly matched to fit and technological dimensions. Unfortunately, the manufacturer does not always take into account the specifics of using materials in spare parts, which affects their service life, reliability, and, ultimately, traffic safety. The chassis of a car is subject to enormous loads, so it is simply impossible not to pay attention to the correspondence of the factory dimensions with the ones being replaced.

Content:

VAZ 2108 front wheel bearing size

If we take this issue more specifically, the chassis of cars of popular models and brands most often suffers from low-quality spare parts. First, let's look at this problem using the example of a VAZ 2108 front wheel bearing.

It would seem that there is nothing complicated - the hub has its own standard dimensions, which the roller bearing must correspond to:

internal diameter - 34 mm; outer diameter - 64 mm; Bearing width - 37 mm.

Only by these parameters can you select a bearing, of which domestic factories produce thousands. Manufacturers from China actively help in this, providing products that are not of the best quality and do not stand up to any criticism. Neither the steel grade, nor the number of balls, nor the dynamic performance of such bearings meet the standards. There are bearings without any markings at all, and there are particularly zealous owners who buy them. Such bearings burn out within 1000 km and simply fall apart while driving.

Features of choosing a wheel bearing for a VAZ 2108

Naturally, we will not be able to check the dynamic load on the bearing races and on each of its balls. But you need to remember, like the Our Father, that:

The VAZ 2108 wheel bearing is marked 25 69 07;
according to the international marking system it is designated 53 20 66 DA;
the bearing has a mass of 0.445 kg;
ball diameter - 9.525 mm;
number of balls - 28.

The difficulty in choosing bearings is that they are not consumable parts, and they are not changed as often as piston rings or silent blocks. That's why some manufacturers don't even bother making human packaging. In addition, the bearing used in the front wheel hub of the VAZ 2108 is maintenance-free, which means:

the bearing does not require lubrication;
does not require preload;
does not require adjustments during installation and operation;
must have a very high resource.

Design of wheel bearings for VAZ 2108

All VAZ cars are equipped with only three types of wheel bearings - wheel bearings for front-wheel drive VAZ cars, wheel hub bearings for rear wheels, and wheel bearings for Kalina and Grant cars, which are smaller in size.

All VAZ bearings are of the HUB-1 type, and this type is characterized by the design and installation features. The bearing has a double-row design, is a type of angular contact ball bearings with closed working surfaces and does not have flanges for attachment to the hub.

Manufacturers and prices of VAZ wheel bearings

These bearings belong to the middle price segment, so the demand for them is very high. Because of this, you can often find the fakes we mentioned. However, the transition of the VAZ plant to bearings of this type, instead of roller ones of the old type, made it possible to choose bearings not only of domestic production, but also of many other foreign factories.

The main percentage share of bearings used on VAZ cars lies with domestic manufacturers, among which several factories can be distinguished:

Saratov Bearing Plant (SPZ) - 28%.
"Volzhsky Standard" - 2%.
Samara plant SPZ9 - 8%.
"Lada Image" - 7%.
Vologda Bearing Plant VBF - 4%.

Let us only note that Lada Image supplies products directly to the plant’s conveyor belt, and SPZ has the largest share in the spare parts market. It is impossible to say anything specific about the quality of workmanship, because there may be failures at every plant, but even if the bearing turns out to be of poor quality, the enterprise must replace it. Prices for VAZ 2108 front wheel bearings rarely exceed 250 rubles apiece, and imported models may cost a little more, but their quality is appropriate.

So, bearings from Kraft, SCT, Trialli, LGR can cost about 300-350 rubles, but these are world-famous manufacturers, and you can definitely count on the quality of the bearing. Choose the right bearings and let your figure eight roll forward with confidence!

Features of choice

When buying a rear wheel bearing for a VAZ-2108, pay attention to the manufacturer. Currently, more or less high-quality domestic parts are produced by the following enterprises:

SPZ (Saratov Bearing Plant);
SPZ-4 (Samara);
VBF (GPZ-23, Vologda);
GPZ-20 (Kursk).

It is believed that the best domestic manufacturer of bearings is the Saratov plant. His products are very reliable, but not very expensive. Thus, a rear wheel bearing for a VAZ-2108 manufactured by SPZ costs between 400-450 rubles.

VBF products are also highly reliable and are slightly cheaper. Bearings SPZ-4 and GPZ-20 are designed for those who are used to saving on spare parts. Their cost is even less, but the quality leaves much to be desired.

There are also imported analogues on sale. They are, of course, expensive, but their quality is beyond doubt. For example, a SKF VAZ 2108 rear wheel bearing, produced in Sweden, costs about 900 rubles. The Japanese equivalent, NSK, will cost about the same.

What is the diameter of the hub (exact factory data)

According to the regulatory documentation provided by the manufacturer, the hub diameter on the VAZ-2114 is 58.5 mm.

Thus, the bolt-to-bolt size is 4x98 , which allows you to install wheel rims with sizes R13, R14 and R15 . To secure the wheels to the hub, use bolts measuring M12x40 mm .

Standard stamping for factory hub

In order to choose non-standard stampings, but, for example, non-standard alloy wheels, it is necessary to change the size of the hub and the inter-bolt space. Of course, the manufacturer and car enthusiasts do not advise doing this unless absolutely necessary, so you should think several times before taking this action.

The most common size on European cars is 4*100 . Therefore, many people want to install just such disks. This is the hub size for Hyundai Accent and Renault Logan.

Catalog of VAZ-2114 hubs

Hub made by AvtoVAZ

2108-3103012 – original catalog number of the front wheel hub manufactured by AvtoVAZ. Using this article, you can determine a list of analogues that are suitable for installation on the Lada 2108-21099 and 2113-2115 family of cars.

Standard stamping on the rear wheel, hub diameter 4*98

So, using the catalog number, it is determined which hub becomes available for installation.

What is a hub and why is it needed?

In mechanics, a hub is the central part of a part with a hole (usually it looks like a keyway) for fitting onto a shaft, in particular onto a trunnion. Also, spokes are attached to the hub.

This is what the hub looks like. The part is made of cast iron or steel, turning and milling.

This important spare part ensures the movement and controllability of the car. Its main functions:

wheel mount;
its rotation;
transmission of torque from the transmission to the wheel, that is, the connection between the shaft and the disk.

Hubs are divided into two types - front wheel hubs and rear wheel hubs. They differ in location: the former can be found in the front wheels, and the latter in the rear.

Rear wheel hub

conclusions

In this article, the diameter of the VAZ-2114 wheel hub was determined, as well as the bolt-to-bolt distance and fasteners with which the wheels can be attached to this unit. Many motorists practice replacing the hub in order to change the size of the disks, but not everyone takes into account that it is also necessary to change the steering knuckles.

Content:

VAZ 2108 front wheel bearing size

It would seem that there is nothing complicated - the hub has its own standard dimensions, which the roller bearing must correspond to:

internal diameter - 34 mm; outer diameter - 64 mm; Bearing width - 37 mm.

Features of choosing a wheel bearing for a VAZ 2108

Naturally, we will not be able to check the dynamic load on the bearing races and on each of its balls. But you need to remember, like the Our Father, that:

The VAZ 2108 wheel bearing is marked 25 69 07;
according to the international marking system it is designated 53 20 66 DA;
the bearing has a mass of 0.445 kg;
ball diameter - 9.525 mm;
number of balls - 28.

the bearing does not require lubrication;
does not require preload;
does not require adjustments during installation and operation;
must have a very high resource.

Design of wheel bearings for VAZ 2108

Manufacturers and prices of VAZ wheel bearings

The main percentage share of bearings used on VAZ cars lies with domestic manufacturers, among which several factories can be distinguished:

Saratov Bearing Plant (SPZ) - 28%.
"Volzhsky Standard" - 2%.
Samara plant SPZ9 - 8%.
"Lada Image" - 7%.
Vologda Bearing Plant VBF - 4%.

Diagnostics, signs of malfunction, causes of failure

With proper operation, the ball bearing itself can last a really long time - about 100,000 kilometers. However, there are a number of reasons why a part may become unusable much earlier. Among them:

frequent driving at high speed on bad roads;
improper installation without lubrication (resulting in overheating and increased wear);
prolonged exposure to an aggressive environment (water, dirt, other abrasives or liquids that get inside);

It is easy to understand that the ball bearing has failed - a distinct noise or buzz appears in the area of the rear wheels. If you ignore the problem, vibrations will appear on the body, and in critical cases, a grinding noise in the rear, indicating that the assembly has simply fallen apart. It is simply unacceptable to wait any longer - the wheel may simply become blocked while driving, so it is necessary to immediately replace it.

Checking wheel bearings:

Rear wheel bearing VAZ 2108 - unit design

The main details of the unit can be seen in the photo below:

guide;
rear hub;
sealing element;
retaining ring;
wheel bearing;
thrust ring;
hub nut;
moisture-proof element;
external protective washer;