Komatsu PC20R-8 Shop Manual page 12

STANDARD TIGHTENING TORQUE
The following charts give the standard tightening torques of bolts and nuts. Exceptions are given in sections of «Di-
sassembly and Assembly».
1. STANDARD TIGHTENING TORQUE OF BOLTS AND NUT
Thread diameter Pitch of
of bolts bolts
(mm) (mm)
6 1
8 1.25
10 1.5
12 1.75
14 2
16 2
18 2.5
20 2.5
22 2.5
24 3
27 3
30 3.5
33 3.5
36 4
39 4
This torque table does not apply to bolts or nuts which have to fasten nylon or other parts non-ferrous metal washer.
. Nm (Newton meter): 1 Nm = 0.102 kgm
00-8
STANDARD TIGHTENING TORQUE
Width across flat
(mm)
10 5
13 6
17 8
19 10
22 12
24 14
27 14
30 17
32 17
36 19
41 19
46 22
50 24
55 27
60 Ð
kgm Nm
0.96w0.1 9.5w1
2.3w0.2 23w2
4.6w0.5 45w4.9
7.8w0.8 77w8
12.5w1 122w13 17.5w2
19.5w2 191w21
27w3 262w28
38w4 372w40
52w6 511w57
66w7 644w70
96w10 945w100
131w14 1287w140
177w20 1740w200
230w25 2250w250
295w33 2900w330
kgm Nm
1.3w0.15 13.5w1.5
3.2w0.3 32.2w3.5
6.5w0.6 63w6.5
11w1 108w11
172w18
27w3 268w29
37w4 366w36
53w6 524w57
73w8 719w80
92w10 905w98
135w15 1329w140
184w20 1810w190
250w27 2455w270
320w35 3150w350
410w45 4050w450
PC20R-8 PC27R-8