61
English
2000
1600
1200
800
400
0
0
20
40
60
80
100
120
140
200
160
120
80
40
0
a
kgf·cm
N·m
2000
1500
1000
500
0
0
1
2
3
200
150
100
50
0
M10
×
30
kgf·cm
N·m
2000
1500
1000
500
0
0
1
2
3
200
150
100
50
0
M12
×
45
kgf·cm
N·m
2000
1500
1000
500
0
0
1
2
3
200
150
100
50
0
M14
×
50
kgf·cm
N·m
Tightening time: sec
(Steel plate thickness
t = 10 mm)
Tightening time: sec
(Steel plate thickness
t = 25 mm)
Tightening time: sec
(Steel plate thickness
t = 25 mm)
Tightening torque
Tightening torque
Tightening torque
Fig. 23
<WR12DM2>
Nut
Fig. 24
Explanation of strength grade:
4 — Yield point of bolt: 32 kgf/mm
2
8 — Pulling strength of bolt: 40 kgf/mm
2
* The following bolt is used.
Ordinary bolt: Strength grade 4.8
High tensile bolt: Strength grade 12.9
)
(
Bolt
Steel plate thickness t
Tightening torque
Number of tightenings (PCS)/charging
Fig. 25
M16
×
55 F10T (tighening time 3 sec)
Ordinary bolt
High tension bolt
Ordinary bolt
High tension bolt
Ordinary bolt
High tension bolt
When full recharged
When completely discharged
Содержание WH 12DM2
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