Rear hub VAZ 2108 drawing with dimensions

Any spare part for a VAZ 2108 is special. The rear wheel hub component is special and a large number of elements are assembled from simple elements. Quality workmanship and adherence to important processes guarantee operational efficiency.

A schematic drawing of the rear wheel hub spare part shows the assembly of the listed elements. Especially the wheel hub cap, bearing washer, wheel bearing, etc. The numbers and schematic drawing are available here.

The information on the VAZ 2108 provides a detailed description of the various spare parts among which this car is manufactured. In addition, the rear wheel hub part is not an error.

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.

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.

How to check the rear wheel hub

Let's first find out what signs can be used to determine that a part is living its last days:

If the hub part has become unusable , then a characteristic grinding sound will be heard from under the tire while driving. This “symptom” is the main one, and with its help you can determine the presence of a malfunction with almost 100% probability.
When turning, the tire slows down and/or becomes hotter than normal. In some cases, a clicking clicking sound may also be heard when turning.

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.

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).

Removing the hub

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

Design and purpose of hubs

The VAZ-2108 moves due to the fact that from the running engine, through mechanical transmissions, torque is transmitted to the drive wheels (in this case, the front wheels). But if the connection between the wheels, axles and the frame is rigid, then movement on an uneven surface will simply become impossible. In addition, all components will quickly fail as a result of colossal shock loads.

To prevent this, a system of intermediate links (levers), or suspension, is used. It should smooth out the effect of road surface irregularities on the ride. Its final unit, to which the wheel is attached, is the hub. This is a cylindrical housing part that is installed on the drive and driven shafts. Between the hub and the shaft there is a bearing, which allows the wheel to rotate.

The main functions of this node are:

ensuring a secure fit and fastening of the wheel;
fastening of brake elements (front - disc, rear - drum);
transmission of torque from the transmission to the wheel through the axle shafts and reliable fastening of the latter.

Structurally, any hub consists of the following components:

Outer rim. Made in the shape of a glass with holes for exiting and fixing the axle shaft, as well as the wheel disk.
Bearing cup. In fact, this is not a separate unit, but just the inner part of the rim, which has the necessary dimensions for installing rotation supports.
Slotted hole. Again, part of the rim is the central hole in it, which has a spline for installing and fixing the axle shaft.

The wheel hub is formed from a cast blank by machining the seating surfaces.

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.

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.

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.

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.

Design Features

The rear hubs of the V8 are equipped with sealed angular contact ball bearings. Each of them has two rows of balls. This makes the structure as resistant to loads as possible, and also allows them to be distributed with the greatest efficiency.

The rear wheel bearing of the VAZ-2108 is made of heavy-duty steel. Its service life, declared by the manufacturer, is 90-120 thousand kilometers. By the way, these are not empty statements. Oddly enough, VAZ wheel bearings actually last a very long time and, if used correctly, can last twice as long as the stated mileage.

Types of bearings and their role

The front or rear bearing of the wheel hub on a VAZ-2108 car is one of the smallest, but extremely important parts of the suspension. Thanks to it, the wheel is able to rotate together with the hub on the axle shaft with minimal friction. This component consists of two annular cages with symmetrical grooves along which intermediate bodies of rotation—balls—run.

The ball bearing for rotation of the front hub on the VAZ-2108 is of the angular contact type, with two rows of balls (28 pcs.) and a seal on both sides. The seal is either rubber-reinforced or lip, which significantly increases the degree of protection of the balls from dirt and dust. Overall and connecting dimensions: 34×64×37 mm.

If, as a result of examining the hub assembly, it turns out that the bearing has failed, then there is only one way to solve this problem - replacement. This is explained by the fact that if the races or the balls themselves wear out, it is not possible to adjust the gap/degree of pressure between the contact surfaces, which is typical for tapered bearings.

The following signs may indicate that the hub will have to be replaced:

hum in the wheel area, which is observed during movement and has a monotonous character;
increased wheel play, which cannot be eliminated by tightening the fixing nut;
overheating of the device as a result of lubricant leakage.

If any of the “symptoms” of damage to the hub are detected, replacement of the problem unit should be carried out without delay to prevent its destruction during movement.

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.

Drawing of the rear axle of the VAZ 2108 with dimensions

And I decided to lift the trailer. 2 years later they told me that it was easy

Ha, right now, I take it off and all the hubs are noisy like... well.

I'll press the bearings in and buy new ones. And figs...

The hub is for Moner Ino, also known as the bearing housing.

I went looking for something that would suit me, but here you are again in figs

We take a bar, a pin from a VAZ 2108 and wow, there is room for sharpening

We purchase 2 assembled hubs, a rear axle 21108 for a sample (don’t forget to warn us that you will return it, this is a sample), and nuts for the turner.

There is a boot on the hub 2108 on the axle side, we press it down 1mm with a hammer, otherwise it catches and pinches.

This is how I defeated this disease.

The trailer also died. Towbar.RF to help

While the turner was working, I decided to fix the problem with the number. its fastening was welded to a 2*2cm beam, it always clung to it, it bent and bent the number. We transfer the number to the trailer body, and instead of 2*2 we use 4*4

Wally and it's like new

These are the dwellings of the Eskimos, and how it all began. business here for an hour)))))

Rear wheel bearing VAZ-2108: dimensions

As for the size of the wheel bearing, they are the same for both modifications:

outer diameter, mm – 60;
internal diameter, mm – 30;
width, mm – 37.

If you are offered a rear wheel bearing for a VAZ-2108, the dimensions of which do not correspond to those specified, it is better to refuse this purchase. All the above parameters are provided for by GOST 520-2002. Foreign analogues of spare parts are manufactured in accordance with the requirements of ISO 15:1998 and have the same dimensions.

Front wheel bearing size VAZ 2108

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.

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!

How to understand that it is time to change the wheel bearing

A failed VAZ-2108 rear wheel bearing may indicate a malfunction:

the appearance of a characteristic hum from the wheel;
uneven rotation of the wheel;
backlash formation.

If you notice that there is a hum coming from one or both rear wheels, rush to diagnose the wheel bearings. You can do this right in your garage. Simply jack up the rear wheel and turn it by hand. It should rotate easily and evenly without making any sounds. Next, grab it with both hands and try to shake it from side to side in a horizontal direction. If the wheel rotates unevenly and you feel play when it becomes loose, get ready for repairs.

Description of design

The rear suspension is with 12 coil springs and 10 double-acting hydraulic telescopic shock absorbers.

The main load-bearing element of the suspension is a beam consisting of trailing arms 14 and a connector 13, welded together through reinforcements. At the rear, brackets 15 with eyes for attaching shock absorbers 10 and flanges for attaching the rear wheel axles and brake shields are welded to the suspension arms. At the front, the levers 14 are equipped with welded bushings with silent blocks 3 pressed into them. A bolt passes through the central bushing of the silent block, connecting the lever to the bracket 2. Three welded bolts are provided to secure the bracket to the body spar.

The suspension spring 12 rests with its lower end on a cup welded to the shock absorber reservoir, and with its upper end, through a rubber gasket 11, on a support welded from the inside to the body arch.

The lower eye of the shock absorber is bolted to bracket 15 of the suspension arm, and its rod is secured to the upper support of the suspension spring through two rubber pads 8 (one at the bottom of the support, the other at the top) and a support washer 7 (under the nut).

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.

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 .

What tools will you need?

Before you begin repair work, make sure you have the necessary tools and supplies:

wheel chocks;
jack;
wheel bolt wrench;
chisel (core);
some object to fix the position of the car body when jacking up (a stump, several bricks, etc.);
hammer;
spacer made of wood (block);
head at “30” with an extended handle;
key to "7";
vice;
a piece of pipe for the outer diameter of the bearing;
long nose pliers;
special puller for the hub;
special pliers for retaining rings;
anti-rust liquid.

If you decide to change the rear wheel bearing on a VAZ-2108, also replace the hub nut. At least that's what the car manufacturer recommends. The fact is that the nut has a special edge that bends during installation and gets knocked down during disassembly.

Drawing of the rear axle of the VAZ 2108 with dimensions

I was also looking for ready-made ones.
I even called production, but they are no longer produced and will not be produced. The reason given was that these whales are not in demand. you can take the rear hubs from a VAZ 2108 and make adapters like these and everything works fine

I was also looking for ready-made ones. I even called production, but they are no longer produced and will not be produced. The reason given was that these whales are not in demand.

you can take the rear hubs from a VAZ 2108 and make adapters like these and everything works fine

I was also looking for ready-made ones. I even called production, but they are no longer produced and will not be produced. The reason given was that these whales are not in demand.

you can take the rear hubs from a VAZ 2108 and make adapters like these and everything works fine

For me, it looks normal, but the drawing is tough. If everything is clear with the smaller bushing, then with the transition bushing it is not clear with the internal dimensions.

It is necessary to sharpen the adapter sleeve, trim the fist and cut the thread on it.

I was also looking for ready-made ones. I even called production, but they are no longer produced and will not be produced. The reason given was that these whales are not in demand.

you can take the rear hubs from a VAZ 2108 and make adapters like these and everything works fine

Front bearing size 08 Outer diameter: 64.00mm Int. Diameter: 34.00mm Thickness: 37.00mm The rear is smaller than the front.

In short, the effect of this device is colossal. The steering wheel play has disappeared, yaw has disappeared while the car is moving at high speed. The steering wheel has become more sensitive and responsive. I regret that I didn’t do this all 5 years earlier.

It is necessary to sharpen the adapter sleeve, trim the fist and cut the thread on it.

I was also looking for ready-made ones. I even called production, but they are no longer produced and will not be produced. The reason given was that these whales are not in demand.

you can take the rear hubs from a VAZ 2108 and make adapters like these and everything works fine

Front bearing size 08 Outer diameter: 64.00mm Int. Diameter: 34.00mm Thickness: 37.00mm The rear is smaller than the front.

Now they are no longer sold, they used to be. Then it seemed like something had worn out from the tool or. I don’t remember what it’s called and all production was stopped because no one wants to order a new one, they say it’s expensive.

I found it somewhere on the internet and read

Guys, this is not a buying and selling topic! STEPA 62

make an appropriate topic, then I’ll transfer all messages relating to your hub there.

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.