Appendix
A
−
8
Appendix 4 Unit conversion table
The correspondence of the conventional unit symbols used in this manual and the international unit
system (SI) is as follows.
Name of weight
Conventional
unit symbol
SI unit and symbols of
units used commonly
Conversion value
Weight/load
(To express mass)
kgf
−−
The values are the same
Mass
−−
kg
Weight/load (The
concept for force)
kgf
N
1 kgf = 9.80665N
Force
kgf
N
1 kgf = 9.80665N
Torque
kgf
⋅
cm
N
⋅
m
1 kgf
⋅
cm = 9.80665
×
10
–2
N
⋅
m
Inertia (J)
kgf
⋅
cm
⋅
S
2
kg
⋅
m
2
1
kgf
⋅
cm
⋅
S
2
= 9.80665
×
10
–2
kg
⋅
m
2
GD
2
kgf
⋅
cm
2
−−
J =
GD
2
4g
(g : Gravitational acceleration 980cm/S
2
)