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HANGCHA CPD20-A - Bolt Tightening Torque Specifications

HANGCHA CPD20-A
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67
Table for bolts tightening torque
Unit: N·m
Bolt’s
diameter
Grade
4.6
5.6
6.6
8.8
6
4~5
5~7
6~8
9~12
8
10~12
12~15
14~18
22~29
10
20~25
25~31
29~39
44~58
12
35~44
44~54
49~64
76~107
14
54~69
69~88
83~98
121~162
16
88~108
108~137
127~157
189~252
18
118~147
147~186
176~216
260~347
20
167~206
206~265
245~314
369~492
22
225~284
284~343
343~431
502~669
24
294~370
370~441
441~539
638~850
27
441~519
539~686
637~784
933~1244
Note:
Use entirely 8.8 grade bolt in the important joint position.
Bolt‟s grade can be found in the head of the bolt, if it can‟t be found, the grade is 8.8.