Hitachi Koki WH 12DM2 Bedienungsanleitung Seite 16

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kgf·cm N·m
M10 × 30
2000 200
1500 150
High tension
bolt
1000
100
500 50
Ordinary bolt
0
0
0 1
Tightening time: sec
(Steel plate thickness
t = 10 mm)
Bolt
Nut
15
kgf·cm
2000
1500
1000
500
0
2 3
Steel plate thickness t
kgf·cm N·m M16 × 55 F10T (tighening time 3 sec)
2000 200
1600 160
When full recharged
1200 120
When completely
800 discharged
80
400 40
0 0
0 20 40
Number of tightenings (PCS)/charging
N·m
M12 × 45
200
High tension
bolt
150
100
50
Ordinary bolt
0
0 1 2 3
Tightening time: sec
(Steel plate thickness
t = 25 mm)
Fig. 23
*The following bolt is used.
Ordinary bolt: Strength grade 4.8
High tensile bolt: Strength grade 12.9
(
Explanation of strength grade:
4 — Yield point of bolt: 32 kgf/mm
8 — Pulling strength of bolt: 40 kgf/mm
Fig. 24
a
60 80 100 120
Fig. 25
kgf·cm N·m
M14 × 50
2000 200
High tension
bolt
1500
150
1000 100
500
50
Ordinary bolt
0 0
0 1
Tightening time: sec
(Steel plate thickness
t = 25 mm)
140
2 3
)
2
2