@0:24 Professor I think *Allowance* is defined as *smallest hole* to *largest shaft* not *smallest shaft* . Also looks like a mistake at @11:00 subtraction it should be 1.4984. Your tutorials videos are much appreciated. Thanks a million!
New question: Are there tables or online tools for mixed materials? For example, a steel cased bearing in a 6061-T6 hole? Or a steel 1045 shaft with a A36 component (hole)? I realize the steel differences in expansion rate are less than for various steels vs steel / aluminum, but surely there is a tool to allow you to pick the materials, the nominal size, the one that is easier to machine to tolerance, or is fixed in size (e.g. bearing), and return close values for what should work for various types of fits.
What should I use for parts designed in millimeters to be produced by people used to fractional inches? Should I translate the metric sizes and specify the ANSI tolerance/fit names? I am supplying solidworks files for CAM, but don't want to confuse machinists.
Hi, I would calculate the fits with ASME B4.2 (Metric Fits) and then convert them to decimal inches for the drawing. It is not advised by ASME to put the type of fit on the drawing. Only the dimensions and tolerances are necessary on the drawing.
i m trying to design an upright in which we press fit the bearing ( ID = 25 , OD =47) , to calculate the tolerance i need to give for the design of the upright , can we use this method?
I am purchasing a pin that already has a specified tolerance from the manufacturer. I need to manufacture a hole that will achieve an FN1 fit with that pin. How do I go about using the tables when I only need to find the tolerance for the hole and not the shaft?
For anyone wondering, Table 8a is on page 653 of the 31st edition of machinery's handbook.
Great video! Thanks for providing such good explanations.
Thanks for providing this info!
@0:24 Professor I think *Allowance* is defined as *smallest hole* to *largest shaft* not *smallest shaft* . Also looks like a mistake at @11:00 subtraction it should be 1.4984. Your tutorials videos are much appreciated. Thanks a million!
Hi, thanks for the input! Someday I’ll redo this video.
@@RDeanOdell much appreciated
The teachers like you are the best of best
Educating free and putting so much efforts
We support you sir good work continue
From india Mumbai🎉🎉🎉
Excellent excellent explanation
..i never understood this until i saw this video..
Thanks so much! I know some textbooks make it seem harder than it is.
clear, informative and to the point. you're a legend.
Thanks for the videos professor, you have no idea of how useful they are. Question: Do we always start by picking the shaft and then calculating?
Thanks so much! No, you can start with either. All that matters is the limits of size after the calculations are finished.
Great video and explanation of the topic. Thanks!
Thanks so much!
New question: Are there tables or online tools for mixed materials?
For example, a steel cased bearing in a 6061-T6 hole? Or a steel 1045 shaft with a A36 component (hole)?
I realize the steel differences in expansion rate are less than for various steels vs steel / aluminum, but surely there is a tool to allow you to pick the materials, the nominal size, the one that is easier to machine to tolerance, or is fixed in size (e.g. bearing), and return close values for what should work for various types of fits.
Hi sir,
thank you this video and fan of your work.
You’re welcome! Thanks for watching & commenting.
Is an H7 hole in imperial the same as an H7 hole in metric?
Edit: Also is an RC3 hole the same in metric and imperial? Is that a term used in both?
Hi what version of machinery's handbook did you used?
It’s the 30th edition. The info is the same, but the page numbers are different.
0:29 if I'm not wrong MMC Shaft = largest of shaft
Thank you. You are awesome ❤
Thanks so much!
a question, is the diagrams actually shows the tolerance range or visual representation of the diameter and shaft it self?
What should I use for parts designed in millimeters to be produced by people used to fractional inches? Should I translate the metric sizes and specify the ANSI tolerance/fit names? I am supplying solidworks files for CAM, but don't want to confuse machinists.
Hi,
I would calculate the fits with ASME B4.2 (Metric Fits) and then convert them to decimal inches for the drawing. It is not advised by ASME to put the type of fit on the drawing. Only the dimensions and tolerances are necessary on the drawing.
@@RDeanOdell Thanks for the reply!
i m trying to design an upright in which we press fit the bearing ( ID = 25 , OD =47) , to calculate the tolerance i need to give for the design of the upright , can we use this method?
Where can get limi and fit table???
I am purchasing a pin that already has a specified tolerance from the manufacturer. I need to manufacture a hole that will achieve an FN1 fit with that pin. How do I go about using the tables when I only need to find the tolerance for the hole and not the shaft?
Hi, can you share the basic size and tolerance for the pin? I can make a video where I explain the calculation for the FN1 fit.
@@RDeanOdell The pin is listed as .3125”diameter, +/- .0001”.
Thanks!
@@jeremiahmoeller6047 Hi, I made a video to address your question:
Calculating FN1 Fit with Purchase Part
th-cam.com/video/IY-3YY46KVk/w-d-xo.html
At 11:00 you substract the LMC of the hole and of the shaft, the result is 2.7 but it is supposed to be 2.6 ? Am i making a mistake ?
No, Jeremie, the mistake is on the whiteboard - an arithmetic error in subtraction. The bottom right-hand figure should read 1.4984, and not 1.484.
Thanks ❤️
You’re welcome!
Sir, for solving the maximum shaft 1.5000-0.0016 = 1.4984. But you wrote 1.484.
👍
Were we partners on a project at hvcc? We made an rc car.
Maybe, I graduated the HVCC MECT program in 2016
pg 630 is Spur gearing in my edition😂....22nd edition its pg 1530
👍
Thanks ❤
Welcome!