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Geometric
dimensioning and geometric tolerancing training
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Part
II : Introduction to
Maximum
and Minimum metal condition
Geometric tolerancing
MMC , LMC
 MMC
, Maximum metal condition
Maximum
material condition ( MMC ) may be considers as the condition when
the part weights the most. The MMC of a shaft is at the maximum
size of the tolerance and the MMC of the hole is at the minimum
size of the hole. For instance, the MMC of the hole of Dia. 4+/-
0.02 mm is Dia. 3.98mm. MMC of shaft of Dia.10 +0/-0.005 mm is Dia.
10.00 mm.
LMC
, Minimum metal condition
Least
material condition ( LMC ) may be considers as the condition when
the part weights the least. The LMC of a shaft is at the minimum
size of the tolerance and the LMC of the hole is at the maximum
size of the hole. For instance, the LMC of the hole Dia. 4+/- 0.02
is Dia. 4.02 mm. LMC of shaft Dia. 10+0/-0.005 is Dia. 9.995 mm.
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