Bonus tolerance in LMC 1

[mousepotato]

Hi,

I have heard that we get a Bonus tolerance for both MMC & LMC.

It is perfectly clear to me how a Bonus tolerance gets added to the position tolerance of a hole, while it starts to "get bigger" from MMC towards LMC.

But how is this possible with LMC of a hole (See the attached excerpt)?
Beats me...

Any help would be appreciated.

Thanks in advance.

 

[mousepotato]

Thanks friends,
Finally the LMC condition makes sense to me on the thin wall scenario.
Correct me if I'm wrong:
If the locating is not important, and the hole and shaft merely need to fit together, I would go for mmc on hole.
If I'm concerned with a hole in a tube which shouldn't get big enough to "eat" the surrounding wall,I would put an LMC on the hole.This ensures a bigger hole "stays" in place while smaller hole can "move around" (like a planetary gear).
If locating is important for a hole and a shaft, then the "play" between them can be arrested by an Lmc modifier.

Any additional scenarios, which call for mmc & lmc?
What do you mean when you give zero tolerance at mmc?
Any examples for RFS condition?

Thanks in advance.