tolerance width bearing

[framas22]

hello to all, seeing the solution of a technical design that gave us the professor, I noticed some mistakes and I would like to share it with you to understand if I am wrong or if I should actually make it present.
the most I would like to know is if the tolerance on the bearing width (which is tabulated and I attach the tables) is well written in the solution. this because he puts alongside the width bearing seat (34.9) tolerance +0.1/0. this is due to the fact that from the above tables the tolerance on the width of the bearing is always h and in this case it turns out 0 -120um. therefore to logic rigor also the seat should be 34.9 0/-0.1 and not +0.1. Am I wrong?

 

[MassiVonWeizen]

the tolerances to be given to the construction components depends on the function and type of assembly that is done and not on the tolerance of the commercial component that instead will be one of the variables that will serve to evaluate the tolerance of the counterparty.
In your case it is a slightly forced coupling the seeger, placed to stop the bearing, it is to be considered precautionary therefore it must be considered that it is preferable to have a tenth of air instead of having, with a -0,1, the seeger in close contact and unmadonna to mount it.

these exercises serve to understand where to put quotas and tolerances and not to reset numbers

 

[meccanicamg]

hello to all, seeing the solution of a technical design that gave us the professor, I noticed some mistakes and I would like to share it with you to understand if I am wrong or if I should actually make it present.
the most I would like to know is if the tolerance on the bearing width (which is tabulated and I attach the tables) is well written in the solution. this because he puts alongside the width bearing seat (34.9) tolerance +0.1/0. this is due to the fact that from the above tables the tolerance on the width of the bearing is always h and in this case it turns out 0 -120um. therefore to logic rigor also the seat should be 34.9 0/-0.1 and not +0.1. Am I wrong? View attachment 68080
View attachment 68081

the two tables give tolerance values on internal and external diameters. What are all those columns to? If you don't explain what I am... There's a treasure hunt.

However the b width of the bearing will always be 0/-something.
its seat will be from zero to more something to allow the assembly of the seeger.

so you have to make drawings to understand the fittings well.... don't be afraid to ask your prof why things.

 

[meccanicamg]

hello to all, seeing the solution of a technical design that gave us the professor, I noticed some mistakes and I would like to share it with you to understand if I am wrong or if I should actually make it present.
the most I would like to know is if the tolerance on the bearing width (which is tabulated and I attach the tables) is well written in the solution. this because he puts alongside the width bearing seat (34.9) tolerance +0.1/0. this is due to the fact that from the above tables the tolerance on the width of the bearing is always h and in this case it turns out 0 -120um. therefore to logic rigor also the seat should be 34.9 0/-0.1 and not +0.1. Am I wrong? View attachment 68080
View attachment 68081

the quarries of the seeger are not so high......it is quota from the bearing bar at the end of the quarry....which can also be not in h13 but also 10mm more.... the seeger beats to the right.

You have no idea what makes me mad is what I still find at work!! !

 

[@ndreaR]

the quarries of the seeger are not so high......it is quota from the bearing bar at the end of the quarry....which can also be not in h13 but also 10mm more.... the seeger beats to the right.

You have no idea what makes me mad is what I still find at work!! !

the problem I think is also because it is full of school texts/university that share it as in the drawing.

 

[meccanicamg]

the problem I think is also because it is full of school texts/university that share it as in the drawing.

That's what it's like.
from the night of the times that you do not quote like that.