Recent content by umatrix

Hi Garland23 and Belanger. I like Alex Krulikowski's GD&T book. I will order the tolerance stack book. Thank you for the suggestions.

Belanger, the main problem is my knowledge of GD&T I have several books on the topic, Al and Scott Neumann gd&t book and course and Alex K’s book. I find it terribly difficult to learn GD&T from a book/ video, and find it slow going. My next approach is going to be a course and a community...

3DDave , thanks. I corrected the sketch. I also took a look through the ASME Y14 standard but did not see anything on using ,multiple cylindrical datum features for perpendicularity , like what is done with run out.

Hi, I have a bores that has two features that serve as stops for the items that are press fit. There is a perpendicularity call out to datums A-B Is this simply stating that both of these features must be perpendicular to 0.15 to both datums A and B? Also will the tolerance zone for both...

I really just wanted an example(textbook, website or other resources)for performing a stack up for worst case run out. Getting into these details is too difficult with being able to post the actual print.

Thanks GregLocock. There is a circular run out tolerance call out, of 0.02mm on the face where the dial indicator is shown. I know that bore position tolerance , perpendicularity and other will affect the wobble of this face, but not sure how to compute the stack up. Seems like it would...

3DDave do you have an example of a stack up where the bearing , bore, hub GD&T is considered ?

I am looking for an example of how to perform a tolerance stack up to check the worst case circular lateral run out. I am only finding basic 1D stack examples , or 2D gap analysis type problems. Hoping someone could point me to a few good resources. I have paged through Bryan R. FISCHER...

I believe it would be the hub bore, the surface that the bearing cones insert.

sorry, I guess I am missing the point. Thanks for trying to help. It's probably the way I am presenting the question.

I took the run out tolerance of the inner race and outer race and summed them to get 0.070. I.e, Inner race r/o tolerance 0.035 , and outer race 0.035. I am looking for the runout on the surface of the hub, and how both bearings run out contributes to it.

Let's come back to the lateral run out. First I would like to see if I have the right idea for the radial stack. Would radial run out stack simply be bearing circular radial tolerance + the hub radial tolerance ( 0.070+0.075) = 0.145

This is for a wheel bearing. I am trying to find the radial stack up of the inner and outer bearing and the hub. Circular Run Out Inner bearing = 0.070 Outer bearing = 0.070 Hub = 0.075 The datums A-B are the bores. Could I also find the lateral runout from these tolerances ?

Thanks Tmoose. Are there any good references for doing a radial run out stack up of bearing and hub/shaft assembly, that you can suggest ?

I have a roller bearing, the cup and cone have a circular runout tolerance. The hub that the shaft and bearing are inserted also have a circular run out tolerance. I am a trying to understand if the cup and cone tolerances will add/stack up and affect the hub run out?