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

[teng125]

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

 

[Meson]

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

 

[teng125]

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??

 

[Meson]

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?

 

[teng125]

because i post on the other forum,and got little replies,so i try it out here