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Aerospool WT-9 Dynamic - 3.9 Mechanisms adjustments

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TECHNICAL DESCRIPTION, OPERATING, MAINTENANCE AND REPAIR MANUAL
3.9 Mechanisms adjustments
3.9.1 Torque moments
Strength class
Metric thread
4D 5D 4S 6E 5S 5R 6S 8G 10K 12K
M4
N.m
Kg.m
1,67
0,17
M5
N.m
kg.m
3,45
0,35
M6
N.m
kg.m
4,31
0,44
4,90
0,50
5,39
0,55
5,88
0,60
6,86
0,70
7,84
0,80
8,33
0,85
9,80
1,00
13,72
1,40
16,67
1,70
M7
N.m
kg.m
5,88
0,60
7,84
0,30
8,82
0,90
9,80
1,00
10,78
1,10
11,76
1,20
12,74
1,30
14,70
1,50
20,59
2,10
25,49
2,60
M8
N.m
kg.m
8,33
0,85
10,78
1,10
12,74
1,30
13,72
1,40
15,69
1,60
17,65
1,80
19,61
2,00
22,55
2,30
32,36
3,30
38,24
3,90
M10
N.m
kg.m
16,18
1,65
21,57
2,20
24,51
2,50
27,45
2,80
31,38
3,20
34,32
3,50
37,26
3,80
44,12
4,50
61,78
6,30
73,54
7,50
M12
N.m
kg.m
27,45
2,80
36,28
3,70
42,16
4,30
47,07
4,80
52,95
5,40
58,83
6,00
63,74
6,50
74,53
7,60
104,93
10,70
125,52
12,80
M14
N.m
kg.m
43,14
4,4
58,83
6,00
66,68
6,80
73,54
7,50
78,54
8,00
93,16
9,50
98,06
10,00
117,67
12,00
164,75
16,80
196,13
20,00
M16
N.m
kg.m
60,80
6,20
78,45
8,00
93,13
9,5
98,06
10,00
107,87
11,50
127,48
13,00
131,29
14,00
164,75
16,80
225,55
23,00
274,58
28,00
M18
N.m
kg.m
88,25
9,00
117,67
12,0
137,29
14,00
156,90
16,00
171,61
17,50
196,13
20,00
205,93
21,00
245,16
25,00
343,23
35,00
411,87
42,00
M20
N.m
kg.m
117,67
12,00
156,90
16,00
176,51
18,00
196,13
20,00
225,55
23,00
245,16
25,00
274,58
28,00
313,81
32,00
441,29
45,00
539,36
55,00
M22
N.m
kg.m
147,09
15,00
196,13
20,00
225,55
23,00
245,16
25,00
284,39
29,00
313,81
32,00
33,42
34,00
392,26
40,00
558,97
57,00
676,65
69,00
M24
N.m
kg.m
205,93
21,00
274,58
28,00
313,81
32,00
353,03
36,00
392,26
40,00
441,29
45,00
470,71
48,00
549,17
56,00
755,11
77,00
970,85
99,00
Ultimate strength
37 50 37 - 50 - 60 80 100 120
ϑ in %
25 22 14 - 7 - 8 12 8 8
Yield point
21 28 32 36 40 45 48 64 90 108
Torque moment formula ( valid for all bolt size ) :
d . σ . S
M
kmax
= 1,065 x
m
Legend:
M
k ……..
Torque moment
kg.cm
d…………...
Bolt shank diameter
cm
σ…………..
Minimum yield point
kg/cm
2
m…………. Safety factor
( m = 1,25 pre σ<50 kg/mm
2
,
m = 1,43 pre σ>50 kg/mm
2
)
S.…………..
Lead of helix
cm
Date: 01.03.2002 WT-9 Dynamic Section 3 Page 3 - 17

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