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calculated wearing seat

  • Thread starter Thread starter tokai80
  • Start date Start date

tokai80

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Good morning.
I recently discovered this very useful forum.
I'm going to expose you to my problem: for an application use a bearing skf 6206 2rs, which tolerances must have housing? 62 +0.02 +0.03.
is it correct?

thanks in advance to all.
 
I recommend you consult the online skf catalog as it depends on case to case, on the catalog you find everything and more....
 
depends on many things...
between the many the type of load (if rotating or not), the operating temperature, the type of assembly. . .
especially the type of assembly!! !
 
anyway.. .
Welcome!
I suggest you present yourself in the appropriate area.
If you also want more sensible advice, it is good that you put a disengagement of how it is mounted and how the bearing will be stressed.
 
I looked at the skf site but I couldn't find what I need. sincerely I don't know the load data, temperature, etc. because it's an existing project for years and it's happened to put my hands on it just because these bearings dance inside the seat. then opened the dilemma if the supplier was wrong, if the design is wrong, etc.
therefore, not having the means x measuring the seat (unfortunately we are a small company) the first thing I wanted to do was verify if the tolerance of +0.02 +0.03 is right for that bearing.
thanks cmq x advice.
 
tokai80 said:
I looked at the skf site but I couldn't find what I need. sincerely I don't know the load data, temperature, etc. because it's an existing project for years and it's happened to put my hands on it just because these bearings dance inside the seat. then opened the dilemma if the supplier was wrong, if the design is wrong, etc.
therefore, not having the means x measuring the seat (unfortunately we are a small company) the first thing I wanted to do was verify if the tolerance of +0.02 +0.03 is right for that bearing.
thanks cmq x advice.
Click to expand...
Can't you post a sketch, a drawing?

where is the bearing applied? make a detailed description... so we can get into the problem and help you a little more...
 
banda bassotti said:
on the site skf ce all including 2d drawings and 3d models to download,it is the bible of the bearing,certo that if you do not know what to look for ...:redface:
allego page relative to couplings source "bibbia"
Click to expand...
Of course if I send to build pieces in tolls. it5, surely comes a phone call to reduce me to more miti councils (it6 or it7)....
 
mmm I bet if instead of a tolerance +0.02 put -0.02 the bearings do not dance anymore...
+ or - a small sign can change many things
 
What do you mean "ball"?
Are we talking about mating with game or lasco?
in case of play, the bearing is inserted effortlessly, but not "ball". this happens in case of lasco (for example 0.5mm difference on the diameter), but then we are not in the field of tolerances, the nominal fee is not the same!
 
generally a bearing is mounted with external ring blocked.
m7, for example.. .
but it is not a rule. depends on assembly and loads.
without a disengagement it is impossible to say
 
on the site of the skf I went, I probably do not know how to "read" what is written. I'm sorry, but I'm almost Arabic. :frown:
I hope that the image I have attached is understandable, this wheel (in total ece are 4) keeps on a big cart (700 kg), does not move continuously. the problem, I try to explain better, is that if at the counter I put the bearing in the seat of the wheel, when I turn the wheel to thread the other, the bearing falls, comes out from the seat. Now, I don't say that it should be planted with the hammer, but not even have that game, right? :confused:
 

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tokai80 said:
on the site of the skf I went, I probably do not know how to "read" what is written. I'm sorry, but I'm almost Arabic. :frown:
I hope that the image I have attached is understandable, this wheel (in total ece are 4) keeps on a big cart (700 kg), does not move continuously. the problem, I try to explain better, is that if at the counter I put the bearing in the seat of the wheel, when I turn the wheel to thread the other, the bearing falls, comes out from the seat. Now, I don't say that it should be planted with the hammer, but not even have that game, right? :confused:
Click to expand...
rotating load on the outer ring, so...
You must block it!
I would say at least n7.. .
 
n7... let's be careful to stick it straight, but then, how do you extract it more?
 
I usually saw them with a screwed shoulder and the bearing with uncertain coupling. But I don't particularly know. . .
 
Fulvio Romano said:
n7... let's be careful to stick it straight, but then, how do you extract it more?
Click to expand...
giusta domanda.
cacciatorino said:
on the large bearings a canal inside the shaft and then injects high pressure oil between the ring and its seat.
Click to expand...
right answer.
but it applies to large bearings.
for that there, with a tree of 30 and seat of 62, just the bat that I have under the desk and someone that pisses me off.... :rolleyes::cool:
 
quoting all that said including the pencils I attach you two tables that I think may be helpful.
as far as the skf site is concerned, just write in the "search" the code of your interest to get all the info that you can be useful if you drop us a bit you will see that it will become simple .... Meanwhile look at the attachments so to the eye I would say that a n7 or m7 on the seat and a k5 or k6 for the tree could be adequate.
Good job
 

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