4
Bolting
REMARKS:
Strength
Grade
4
.
8
6
.
8
8
.
8
10
.
9
Min
breaking
strength
392MPa
588MPa
784MPa
941MPa
Material
Q235
(
SS41
)
35
(
S35C
)
35CrMo
(
SCM3
)
42CrMo
(
SCM4
)
Thread
22
7
69
10
98
14
137
17
165
24
10
98
14
137
21
206
25
247
27
14
137
21
206
29
284
35
341
30
18
176
28
296
41
402
58
569
32
23
225
34
333
55
539
78
765
36
32
314
48
470
70
686
100
981
41
45
441
65
637
105
1029
150
1472
46
60
588
90
882
125
1225
200
1962
50
75
735
115
1127
150
1470
210
2060
55
100
980
150
1470
180
1764
250
2453
60
120
1176
180
1764
220
2156
300
2943
65
155
1519
240
2352
280
2744
390
3826
70
180
1764
280
2744
320
3136
450
4415
75
230
2254
350
3430
400
3920
570
5592
80
280
2744
420
4116
480
4704
670
6573
85
360
3528
530
5149
610
5978
860
8437
90
410
4018
610
5978
790
7742
1100
10791
95
510
4998
760
7448
900
8820
100
580
5684
870
8526
1100 10780
105
660
6468
1000
9800
1290 12642
110
750
7350
1100
10780
1500 14701
115
830
8143
1250
12250
1850 18130
120
900
8820
1400
13720
2250 22050
130
1080
10584
1650
16170
2500 24500
145
1400
13720
2050
20090
155
1670
16366
2550
24990
175
2030
19894
3050
29890
mm
1. All recommendations above are in accordance with the Germany standard (DIN).
2.The figures above represent the maximum bolt torque; the recommended torque is
12
.
9
1176MPa
40
GrNiMoA
(
SNCM
)
23
225
36
363
49
480
69
680
93
911
120
1176
180
1764
240
2352
250
2450
300
2940
370
3626
470
4606
550
5390
680
6664
850
8330
1050 10290
1350 13230
14
16
18
20
22
24
27
30
33
36
39
42
45
48
52
56
60
64
68
72
76
80
85
90
100
110
120
M
KGM
N
.
m
KGM
N
.
m
KGM
N
.
m
KGM
N
.
m
KGM
N
.
m
Torque values
Torque values Torque values
Torque values
Torque values
FORM 1
BOLTING TIGHTENING FORCE RECOMMENTED CHART
80% of these chart figures.
3.The recommended tightening torque is 80% of the chart figure above. For example;
for bolt M52 the strength grade is 8.8 therefore, the torque is 4704*80% = 3763Nm
4.The recommended loosening torque is 150% of the tighting torque. For example; the
tightening torque is 3763*150%(200%) = 5645(7526) Nm.
Содержание 10MXTA series
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