Komatsu BR380JG-1E0, Shop Manual, Page: 46 / 841

SEN01344-00 00 Index and foreword
32
BR380JG-1E0
Standard tightening torque table 1
1. Table of tightening torques for bolts and nuts
a
Unless there are special instructions, tighten metric nuts and bolts to the torque below. (When using
torque wrench)
a
The following table corresponds to the bolts in Fig. A.
a
The following table corresponds to the bolts in Fig. B.
a Fig. A a Fig. B
Thread diameter of bolt Width across flats Tightening torque
mm mm Nm kgm
6 10 11.8 – 14.7 1.2 – 1.5
8 13 27 – 34 2.8 – 3.5
10 17 59 – 74 6.0 – 7.5
12 19 98 – 123 10.0 – 12.5
14 22 153 – 190 15.5 – 19.5
16 24 235 – 285 23.5 – 29.5
18 27 320 – 400 33.0 – 41.0
20 30 455 – 565 46.5 – 58.0
22 32 610 – 765 62.5 – 78.0
24 36 785 – 980 80.0 – 100.0
27 41 1,150 – 1,440 118 – 147
30 46 1,520 – 1,910 155 – 195
33 50 1,960 – 2,450 200 – 250
36 55 2,450 – 3,040 250 – 310
39 60 2,890 – 3,630 295 – 370
Thread diameter of bolt Width across flats Tightening torque
mm mm Nm kgm
6 10 5.9 – 9.8 0.6 – 1.0
8 13 13.7 – 23.5 1.4 – 2.4
10 14 34.3 – 46.1 3.5 – 4.7
12 27 74.5 – 90.2 7.6 – 9.2