TIGHTENING TORQUE OF SCREWS AND NUTS
The tightening torque in the table are valid approximately for the following conditions :
-
Hexagonal- head screws (UNI 5737 type), cylindrical-head screws (UNI 5931 and UNI 6107 type).
- The tightening torque must be applied slowly with dynamometric wrenches.
-
The diagram is based on a static coefficient of friction µ = 0.14. For a different friction coefficient µx, the
value of the clamping force detected by the diagram must be multiplied
for the correction factor.
x
k
µ
14
.
0
=
1 Nm = 0,102 kg m
The data in the table refer to Regulation DIN 267
Ø bolt
hexagon
coarse
fine
coarse
fine
coa rse
f ine
coarse
fine
mm
mm
mm
Nm
Nm
Nm
Nm
Nm
Nm
M8
13
1,25
1,0
25
27
35
38
42
46
M10
17
1,5
1,25
50
53
70
74
84
89
M12
19
1,75
1,5
85
89
119
125
143
150
M14
22
2,0
1,5
135
148
190
208
228
250
M16
24
2
1,5
212
226
298
318
357
382
M18
27
2,5
2,0
290
310
402
436
490
523
M20
30
2,5
2,0
413
436
580
614
697
736
M22
34
2,5
2,0
568
597
798
840
958
1.008
M24
36
3,0
2,0
714
781
1.004
1.098
1.204
1.317
M27
41
3,0
2,0
1.050
1.139
1.477
1.602
1.772
1.923
M30
46
3,5
2,0
1.429
1.590
2.009
2.236
2.411
2.648
M33
50
3,5
2,0
1.941
2.136
2.729
3.004
3.275
3.605
M36
55
4,0
3,0
2.497
2.652
3.511
3.730
4.213
4.476
NORM
8.8
10.9
12.9
Metric Thread
Metric Thread
Met ric Thread
Metric Thread
20
Summary of Contents for RH 12
Page 1: ...ROTARY CRUSHER RH 12 INSTRUCTIONS MANUAL...
Page 2: ...2...
Page 19: ...HYDRAULIC SCHEMATIC 19...
Page 21: ...I I RH12 TI 21...
Page 25: ...25...
Page 26: ...STANDARD 26...
Page 28: ...OPTIONAL _1 28...
Page 32: ...Memo 33...
Page 33: ......
Page 34: ......