Operation Manual

69
English
2000
1600
1200
800
400
0
020406080100 120 140
200
160
120
80
40
0
a
kgf·cm N·m
Nut
Fig. 27
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. 28
M16 × 55 F10T (tighening time 3 sec)
When full recharged
When completely discharged
<For WR12DM2>
<For WR9DM2>
Fig. 29
kgf·cm
1600
1200
800
400
0
0 20 40
60 80 100 120 140 160
N·m
160
120
80
40
0
a
Tightening torque
Number of tightenings (PCS)/charging
When full recharged
When completely discharged
M14 × 50 High tention bolt
(tighening time 3 sec)