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TILSPÆNDINGSMOMENT
Den kraft, der kræves til at stramme en bolt, er forskellig, alt efter boltens materiale og dens størrelse tillige
med, hvilket materiale bolten anvendes med. Vælg længden af tilspændingstid i overensstemmelse
hermed.
Referenceværdier står anført herunder.
(Disse kan være forskellige alt efter tilspændingsforholdene).
FAKTORER DER PÅVIRKER TILSPÆNDINGSMOMENTET
Tilspændingsmomentet påvirkes af mange forskellige faktorer, inklusive de følgende. Efter tilspænding bør til-
spændingsmonentet altid kontrolleres med en momentnøgle.
1) Spænding
Når batteriet er næsten afladet, falder spændingen, og tilspændingsmomentet bliver mindre.
Tilspændingsforhold for bolte
M8, M10, M12, M14 x 25 mm standardbolt
(Boltstørrelse: Millimeter)
Tilspændingsmoment
19,6
(200)
39,2
(400)
58,8
(600)
78,5
(800)
98,1
(1000)
N·m
(kgf-cm)
Tilspændin
g
stid
(
sek.
)
0,1 0,25 0,5 1 2 3
M8
M10
M12
127,4
(1300)
117,7
(1200)
M14
Spændeskive
Spændeskive
Fjederskive
Tykkelse af
stålplade 10 mm (3/8")
Bolt
Møtrik
Tilspændingsforhold
* Følgende bolte anvendes:
Standardbolt: Styrketype 4,8
Høj trækkraft-type: 12,9
Forklaring af styrketype
4,8
Trækstyrke for bolt 588 N/mm
2
(60 kgf/mm
2
)
Strækgrænse for bolt
(80% af trækstyrke)
471 N/mm
2
(48 kgf/mm
2
)
EY6535(EU).book Page 61 Tuesday, March 1, 2005 9:36 AM
61


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