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FITS AND
CLEARANCES
Eva Novitalia
Modul 7 – Kamis,11 februari2016
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Today....•
Drill sizes for bolt oles, !lasses of "ts• !ommo# system of "ts a#d
$leara#$es
•%$edule of "ts a#d $leara#$es forair$raft a#d e#&i#es
• 'imits for bo( , t(ist a#d (ear
•%ta#dard metods for $e$)i#&safts, beari#&s a#d oter *arts
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%ystem of "tsShaftNominal Size
Tolerance
Reference LineDimension
Upper and Lower LimitsActual Size
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Trilo&y of+its
!leara#$e Tra#sitio#
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FITSFITS ALICATI!NS
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!ommo# system of "ts a#d$leara#$es
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Ty*e of "ts
• -'E /%ED%%TEM
%ize of ole is )e*t$o#sta#t, saft size
is varied to &etdi3ere#t "ts.
• %-+T /%ED%%TEM
%ize of saft is )e*t$o#sta#t, ole sizeis varied to &etdi3ere#t "ts.
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%imilarity
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Tolera#$e
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Tolerance onComponents
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LI"ITS#STE"
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/o( 'imit T(ist limit4ear 'imit
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%ta#dard metods for$e$)i#& safts, beari#&s a#doter *arts• Dial Test #di$ator• !e$)i#& Metod
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May as)
you....• -o( to de$ide tolera#$e5• 4y do you #eed "t a#d
$leara#$e5
• 4at te ris) of (ro#&"ts a#d $leara#$ei#stalled5
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$UESTI!NS%
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ASSI&N"ENT
