What are the deviations for 145H8/d9 based on tolerance tables?

Click For Summary

Homework Help Overview

The discussion revolves around understanding the deviations for the designation 145H8/d9 based on tolerance tables, specifically in the context of mechanical design and engineering tolerances.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to clarify the meaning of the notation 145H8/d9 and its implications for nominal values and tolerances. Questions are raised about whether the nominal value of 145 applies equally to both H8 and d9.

Discussion Status

Some participants have provided insights into the notation, indicating that capital letters refer to sockets or holes while lowercase letters refer to shafts. There is ongoing exploration of how the nominal value relates to the different designations.

Contextual Notes

One participant notes the relevance of the inner diameter of the socket being equal to the outer diameter of the shaft, suggesting a relationship between the two designations. There is also a mention of the appropriateness of the forum for this type of question.

teng125
Messages
416
Reaction score
0
Determine, by using the attached tolerance tables,the deviations for 145H8/d9 .

for only 145H8 ,i know what i mean but 145H8/d9 what does it mean??

pls help
thanx
 
Physics news on Phys.org
I don't have the formal definition with me, but for quick reference here we go:

Capital letter refers to sockets or holes, while small letter refers to shafts. Remember this form: Socket/Shaft
 
ok...but then for 145H8/d9 , do u mean the nominal=145 is the same for H8 and d9??

bacause normally i know how to solve 145H8 but for 145H8/d9 which there appears a /d9, what should i do with it??
 
This is because

"Inner diameter of the socket (tube) = 145 unit = outer diameter of the shaft."

Hence, there is no point repeating 145 twice.

By the way, why are you posting machine design problem here in Advanced Physics forum?:smile:
 
because i post on the other forum,and got little replies,so i try it out here
 

Similar threads

Replies
2
Views
16K
  • · Replies 11 ·
Replies
11
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
5
Views
958
  • · Replies 10 ·
Replies
10
Views
1K
  • · Replies 16 ·
Replies
16
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
Replies
4
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 64 ·
3
Replies
64
Views
7K