problem bearings on autocad

[luketto92]

Hello everyone, I am a mechanical engineering student, I am doing a project with autocad mechanical 2016, I am encountering difficulties when I want to insert roller bearings on the trees. I put a point on the edge of the tree, then a point on the axis of the tree, then sometimes it asks me rotation and distance (I don't know what to put), in the end it always tells me "geographical restrictions: no valid data records found, I made several attempts but I can't understand what I'm wrong. You can help me. Thank you very much. Luca.

 

[MassiVonWeizen]

Usually it means that the dimensional parameters inserted do not correspond to any bearing present in the library. probably select the wrong type.
on the demand rotation and distance press simply sending (it is asking you to insert position where to put the bearing on the selected point, right or left, and the width of the bearing) that imposed them after
but first of all verify the size of the bearing hole/shaft/width.
then you have to select the right type that is expressed in din then either find a conversion table or go to attempts
Now I don't remember, but it seems to me that he had problems if the axis was not on a dedicated layer, in doubt put it on that of the axes; then select the point on the shaft or hole in which to insert it and the perpendicular point on the axis.
set hole/shaft/width parameters
Now if the type is right you will see the window with the bearings available; the codes are those of the skf so if you appear you won the teddy bear and you can go from the way to withdraw the prize otherwise:
- if the error appears to you means that the type selected at the beginning is wrong,
- if you see the code window, but your type is not wrong.

If you write the type of bearing I try to take a look

 

[luketto92]

First of all thanks to the answer, I'm trying to read what you told me, however I drew a tree and next to the shoulder I wanted to put the radial roller bearing din 365-t2: 1984, because now I'm taking my hand, are the first days of use, and I'm doing a drawing already made in which this bearing was used. Thank you.

 

[MassiVonWeizen]

as I have written you must know already the measurements of the bearing (according to the calculations made up), that if you put them to randomly pass eternity

 

[MassiVonWeizen]

something about the comparison between so-called skf and din can be derived from the pdf that I attach to you (from page 92 to 108).

pdf, however, remains useful to find products in din regulations
View attachment DIN-EN-ISO.zip

 

[luketto92]

Thank you very much, both for the previous answer, and for the comparison file :smile: , so the few times that I had worked the insertion of the bearing was "lucky", because so I have to do all the calculations first, I can't do tests and put bearings on the trees, let's say to take my hand with the program (excuse me but I'm just at the beginning), right?

 

[MassiVonWeizen]

you can also randomly put them if it is to try the program, but you need to know the measurements and type.
If for example put a radial ball bearing on a tree from ø52 will give you error because it is not a contemplated diameter.
so the steps are:
typology (and you have to understand what din norm corresponds by going perhaps to attempts)
correct measures* (at least one between internal and external diameter)

*even the drawing must be; if you draw the tree ø60,01 most likely will give you error