DIN3021标准弹簧卡箍docxWord文档格式.docx
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System:
springbandclamp/hose/spigot
AnnexesAandBareforinformation.
Warningremarksaboutapplication
Thisstandarddraftissubmittedtothepublicforcheckingandcomments.Sincetheintendedstandardmaydifferfromthepresentversion,applicationofthisdraftshallbeagreeduponinaspecialform.PleaserefercommentstoNormenausschussEisen-,Blech-undMetallwaren（NAEBM）inDIN,KaiserswertherStr.135,D-40474Duesseldorf.
1Fieldofapplication
Thisstandardisapplicabletospringbandclampsmadefromannealedstripsteelusedtoattachhosestomobileandstationaryplantsforapplicationinatemperaturerangefrom-40°
Cto+150°
C,insuchfieldsas:
-coolantcirculationandservosystemupto300kPa（3bar）overpressure,
-fuelsystemupto700kPa（7bar）overpressure,
-airintakesystemunderpressure,
-airchargesystemupto200kPa（2bar）overpressure,
tosealthehose/spigotconnection.
Thespringbandclamp,hoseandspigotisasystem.PleaseseeAnnexAfordesignnotes.
2Referencestostandards
Thisstandardcomprisesdatedorundatedreferences,definitionsfromotherpublications.Thesereferencestostandardsarequotedattherelevantlocationsinthetext,andtheotherpublicationsarelistedbelow.Inthecaseofdatedreferences,lateramendmentsorrevisionsofthispublicationsbelongtothisstandardonly,iftheyhavebeenworkedintothetextbywayofamendmentorrevisions.Inthecaseofundatedreferencesthelatestissueofthepublicationsreferredtoshallapply.
DIN3021-2
Hoseclamps-springbandclamps-Part2:
Technicaldeliveryconditions.
DIN3021-3
Hoseclamps-springbandclamps-Part3:
springbandclampshosespigots
DIN6784
Workpieceedges-terms,drawingdetails
DINEN10052
Termsforheattreatmentofferrousmaterials;
GermanlanguageversionEN10052:
1993
DINISO2768-1
Generaltolerances-Part1:
Tolerancesforlengthsandangulardimensionswithoutindividualtolerancesbeingentered.IdenticaltoISO2768-1:
1989.
Tobecont.Page2to8
Normenausschu?
Eisen-,Blech-undMetallwaren（NAEBM）imDINDeutschesInstitutfiirNormungeV
3Dimensions,marking
Dimensionsinmillimetres
Generaltolerances:
ISO2768-m
Thespringbandclampsneednotcorrespondtothepictorialrepresentation;
onlythedimensionsspecifiedmustbemaintained.
Figure2:
FormB
MarkingofaspringbandclampFormAwithnominaldiameterdn=32mmandaclampwidthof12mm
ClampDIN3021-A-32x12
Designation
DINstandardnumber
Form
Nominaldiameterdn
Clampwidthc
Table1:
DimensionsforFormA,c=12mm
Nominaldiameter
Deliverydiameter
Fullyopeneddiameter
Materialthickness
Clampwidth
a
b
e
g
h
Gapdimen.
dn1
damax.
domin.
s±
0.4
c±
0.34）
max.
5）max.
±
0.7
丄6）
tmax.
13
12
14.2
14
13.3
15.8
15
16.5
16
14.9
17.5
0.8
17
15.6
18.5
18
19
17.8
20.2
40
20
18.4
21.6
21
19.4
22.5
22
20.5
24.2
1.3
23
24.7
24
26
25
23.5
26.8
24.3
28
27
25.2
29
0.09
26.1
30.2
31.5
30
32.5
1.7
32
29.5
34.5
34
30.6
36.4
35
38
9
10
7
5.8
60
36
39
41.5
35.5
42.5
42
37.5
44.5
43
37.9
45.5
44
38.5
46.5
46
40.5
48.5
47
50
2.1
0.12
49
52
43.5
53
51
54
55.8
72
55
58
51.5
63
65
57.5
68
70
61.5
73
75
66
78
2.6
0.15
80
83
85
74
88
110
90
79
93
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