Hitachi WH 12DM Instructions De Sécurité Et Mode D'emploi page 19

<For WH9DM>
kgf·cm 5/16"×1-3/6"
N·m
(in-lbs) (M8×30)
100
1000
(868)
80
800
High strenge bolt
(694)
60
600
(521)
40
400
(347)
200 20
(174)
Ordinary bolt
0 0
0 1
Tightening time: sec
(Steel plate thickness
t = 3/8" (10 mm))
Bolt
Nut
kgf·cm
N·m
(in-lbs)
1000
(868)
800
(694)
600
(521)
400
(347)
200
(174)
0
2 3
Tightening time: sec
(Steel plate thickness
t = 1" (25 mm))
Steel plate
thickness t
3/8"×1-3/6"
(M10×30)
100
80
High strenge bolt
60
40
Ordinary bolt
20
0
0 1 2 3
Fig. 14
*The following bolt is used.
Ordinary bolt: Strength grade 4.8
High tensile bolt: Hardness division 12.9
(
Explanation of strength grade:
4 — Yield point of bolt: 45,500 psi (32 kgf/mm
8 — Pulling strength of bolt: 56,900 psi (40 kgf/mm
Fig. 15
kgf·cm 15/32"×1-3/4"
N·m
(in-lbs) (M12×45)
120
1200
(1042)
High strenge bolt
100
1000
(868)
80
800
(694)
60
600
(521)
40
400
Ordinary bolt
(347)
200 20
(174)
0 0
0 1 2
Tightening time: sec
(Steel plate thickness
t = 1" (25 mm))
English
3
)
2
)
2
)
19