English
17
Tightening torque
Tightening torque
Tightening torque
Tightening time: sec
(Steel plate thickness
t = 3/8” (10 mm))
Fig. 7
Tightening time: sec
(Steel plate thickness
t = 3/8” (10 mm))
Fig. 8
Tightening time: sec
(Steel plate thickness
t = 1” (25 mm))
Fig. 9
0
0
1
2
3
200
(14)
400
(29)
600
(43)
800
(58)
1000
(72)
kg-cm
(ft-lb)
5/16”
×
1-3/6”
(M8
×
30)
High tension bolt
Ordinary bolt
0
0
1
2
3
0
200
(14)
400
(29)
600
(43)
800
(58)
1000
(72)
kg-cm
(ft-lb)
3/8”
×
1-3/6”
(M10
×
30)
High tension bolt
Ordinary bolt
0
1
2
3
0
200
(14)
400
(29)
600
(43)
800
(58)
1000
(72)
1200
(86)
kg-cm
(ft-lb)
15/32”
×
1-3/4”
(M12
×
45)
High tension bolt
Ordinary bolt
Nut
Bolt
Steel plate thickness t
Explanation of hardness division:
4 — Yield point of bolt: 45,000 psi (32 kgf/mm
2
)
8 — Pulling strength of bolt: 56,900 psi (40 kgf/mm
2
)
*The following bolt is used.
Ordinary bolt: Hardness division 4.8
High tensile bolt: Hardness division 12.9
(
)
Fig. 10
Содержание WH 8DH
Страница 65: ...Español 65 ...
Страница 66: ...Español 66 ...