Principles of tightening the hub nut, double-row ball bearing, split

Question

Hello. Bearing as in the topic. The middle ring is two rings, so tightening the nut is very important but I do not know with what force! Or better, how this type of bearing is usually tightened? Dimensions: int. 45x85x45 width, so large PS I can't find wise advice and I've been looking...

grala1 · Accepted Answer

What will the given cars give you, if there is a completely different type of bearing installed there than in the original?

darfur5 · Accepted Answer

The original bearing was tapered and mounted ball, so tightening the bearing according to the vehicle manufacturer's data is currently not possible, in this case you have to rely on intuition and common sense. experiment in my opinion.

ociz · Accepted Answer

What are they not supposed to endure? The inner rings will come together the same to 0 if you tighten 100Nm or 300Nm. Unless, for example, in the aforementioned Subaru, they have thin walls and can deform when tightened too much.

Anonymous · Accepted Answer

Understand that the rings are in contact with each other (imagine there is one undivided inner ring), the balls are not compressed in any way, adequate internal clearance is provided at the production stage ...

bandi21 · Answer

Such bearings are tightened with great force. Each manufacturer gives its value, but I tighten with a torque not less than 200Nm. You can go ahead and tighten with all your strength with a 1 meter long wrench.

przemyslw · Answer

With the 49x84x 48 bearing, only instead of balls there are rolls and a light cone, the following parameters are given: load-carga (kN) 114.5 kN dynamic and 183.8 kN static - what are these parameters? . I do not know myself at all, it seems to me that in the case of ball bearings it is probably less tightening than conical ones?

ociz · Answer

Have you noticed that the drive shaft bolt / nut can sometimes be M18 and sometimes M10? At the same moment you would like to tighten them because the same bearing? In some cars you can also tighten with a 2m pipe and nothing will happen for the bearing, you will destroy the thread sooner, and in some (e.g. Subaru) you will destroy the bearing if you tighten it too much.

przemyslw · Answer

ll different bolts and moments and then I do not understand

ociz · Answer

Don't look for any universal rule, just what the car manufacturer says.

Anonymous · Answer

This bearing requires no pretension. The rings converge to zero anyway, so the force with which they are pressed is not that critical to the motion parameters.

Specifically, what do you want to do with this bearing? Replace in the car? Do you build any DIY?

gimak · Answer

In my opinion, when tightening it does not matter whether the bearing is split or not, the nut / bolt must be tightened wisely, so as not to break.

przemyslw · Answer

Is it 100%? For my logic, it is not because with little wear there are play, etc. etc. And if you are right, it means that the key is 1m long. ). I put the bearing on, unfortunately a cheap replacement, because the original ones are cones, but it was impossible to get another one quickly, I couldn't even find any information about what exactly should be dimensionally. In addition, I doubt that there would be an assembly manual in the original factory. Added after 3 [hours] 34 [minutes]: Can someone translate this into practical language? On the 19 ext. Page 43x76 x 40 width Basic rated load (kN) Multiple rows 55.5 C and 69 C0 ---- Consists of inner ring, outer ring, rollers, cage and seal.

ociz · Answer

The data in the table has nothing to do with the tightening torque of the hub.

bandi21 · Answer

Enter what car it is and you will get a ready answer. Added after 5 [minutes]: For example, Toyota Avensis 216Nm and Fiat Punto 70Nm and an additional 55 degrees.

przemyslw · Answer

ociz I believe you that: The data in the table has nothing to do with the tightening torque of the hub. And what is this data?

Anonymous · Answer

100%. In Polish, it is the running and resting capacity of the bearing. Parameters needed for the calculation of the life / size of the bearings.

przemyslw · Answer

In addition, according to the data, there was to be a hub with an integrated bearing. I even see advice: tighten it with a force of 245-340 kN

darfur5 · Answer

If I have no idea what force to tighten the bearing, before disassembling it, I mark a line on the nut and washer or other fixed point with a marker pen and tighten it so that the points line up with each other. This method is not as accurate as a dynamometer, but it has not let me down yet.

przemyslw · Answer

. The thing does not happen in Poland and the Polish mechanic claimed that it cannot be the same in the front and back and the time to bring the original is up to 7 days and PLN 599 and I gave 1/9. maybe with larger and from the same batch of bearings you can risk it, and here: On a large press it was hard to come out and the new one was quite hard to get into the hub and then ... I put my hand on the steering knuckle But I corrected it that it came in with quite a lot of resistance.

ociz · Answer

From what I understood, it was also double-breasted. They are simply exchanged for cheap trash, because ball bearings are much cheaper.

przemyslw · Answer

Ociz so exactly . I bought the old one before disassembling it, otherwise I couldn't.

darfur5 · Answer

These types of bearings are not easy when it comes to squeezing out, you have to use the burner more than once to make them come out, but the temperature can be used when installing a new set (but not too hot) and it practically falls into place by itself. apply a dash of oil and it all comes in with no problem.

przemyslw · Answer

Front wheel bearing, ball, double-row, covered on both sides, probably of a similar type to mine (the picture shows one with an additional ring between the inner rings and this is not in the second photo ,). But the tightening torque [Nm]: 360! And the balls can stand it?

Strumien swiadomosci swia · Answer

Buddy, how to master 2 you set up CX, pray that you would come from this west at all. CX is not a bearing, it is scrap on the shelf anymore. Secondly, the original has ball bearings.

grala1 · Answer

Do you think that CX is scrap in delivery vans or in general?

bandi21 · Answer

I don't have good memories of CX, unfortunately the scrap in general.

grala1 · Answer

I only make passenger cars and somehow I do not remember that someone returned to me with the CX, although it is the customer's choice. Usually, he installs something better, he prefers to avoid cheap products, but if the client wants it, he has it set up.
This year I put 6 CX units on up to 3 cars.

przemyslw · Answer

I don't think the inner rings are touching each other but I believe my friends (points went). Thanks to everyone for your help

Strumien swiadomosci swia · Answer

I assumed Cx for alternators, now I do not assume anything because of caution, because some of them are worn out. And take it, for a delivery truck that does 20-30 thousand a month around Europe.

Principles of tightening the hub nut, double-row ball bearing, split

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