Standard Tightening Torque - Komatsu WB140-2N Shop Manual

FOREWORD
12

STANDARD TIGHTENING TORQUE

STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS
The following charts give the standard tightening torques of bolts and nuts. Exceptions are given in DISASSEMBLY AND
ASSEMBLY.
Thread diameter of bolt
mm
6
8
10
12
14
16
18
20
22
24
27
30
33
36
39
Thread diameter of bolt
mm
6
8
10
12
00-10
Width across flats
mm
10
13
17
19
22
24
27
30
32
36
41
46
50
55
60
Width across flats
mm
10
13
14
27
STANDARD TIGHTENING TORQUE
Nm
13.2 ±1.4
31.4 ±2.9
65.7 ±6.8
112 ±9.8
177 ±19
279 ±29
383 ±39
549 ±58
745 ±78
927 ±98
1320 ±140
1720 ±190
2210 ±240
2750 ±290
3280 ±340
Nm
7.85 ± 1.95
18.6 ± 4.9
40.2 ± 5.9
82.35 ± 7.85
WB140-2N, WB150-2N
00
00
kgm
1.35 ±0.15
3.20 ±0.3
6.70 ±0.7
11.5 ±1.0
18 ±2.0
28.5 ±3
39 ±4
56 ±6
76 ±8
94.5 ±10
135 ±15
175 ±20
225 ±25
280 ±30
335 ±35
kgm
0.8 ± 0.2
1.9 ± 0.5
4.1 ± 0.6
8.4 ± 0.8