APPENDIX CONVERSION TABLE OF UNITS
This manual uses SI unit system and metric system.
If inch system is required, please convert the values to inch system by referring to the following
table.
In the texts and drawings in this manual, there are dimensions and other values
specific to inch specification machines. In the case of these specific dimensions and
values, converting the corresponding values for the metric specification machines into
inch system dimensions or values using the conversion table will not give the correct
dimensions or values.
<Example>
The dimensions and values specific to the inch system machines include cutting
feedrate per spindle revolution, manual jog feed rate, tool dimensions, zero point
(NC lathe only), and T-slot and pallet dimensions (machining center only).
For these values, refer to the values specified in the machine specification table. If the
required value is not found in the table, contact Mori Seiki.
Units and numerical values in ( ) in the SI column indicate the formal expression of the SI
unit system.
However, they are not used usually and the units described above the expression in ( ) are
used instead of the formal SI unit expression. These units are also approved as SI unit
system expression.
Quantity
Metric
SI
Yard/Pound
Remarks
Length
1 mm
1 mm
0.0394 in.
1 m
1 m
3.281 ft
Velocity
1 mm/min
1 mm/min (0.017 mm/s)
0.0394 in./min
1 m/min
1 m/min (0.017 m/s)
3.281 ft/min
Area
1 m
2
1 m
2
10.764 ft
2
1 mm
2
1 mm
2
0.0016 in.
2
Volume
1 L (liter)
1 L (liter) (1
×
10
-3
m
3
)
0.264 gal.
gal.: US gallon
Volumetric flow rate
1 L/min
1 L/min
(1.66666
×
10
-5
m
3
/s)
0.264 gpm
gal.: US gallon
Mass
1 kg
1 kg
2.2 lb.
Force
1 kgf
9.80665 N
2.2 lbf
Torque
1 kgf
•
m
9.80665 N
•
m
7.233 ft
•
lbf
Pressure
1 kgf/cm
2
9.80665
×
10
-2
MPa
14.22 psi (14.22 lbf/in.
2
)
1 MPa = 1000 kPa
1 kPa = 1000 Pa
1 ton/m
2
9.80665
×
10
3
Pa
204.4 lb./ft
2
ton: metric ton
Output
1 kW
1 kW
1.34 HP
Temperature
1
°
C
1
°
C (274.16 K)
33.8
°
F
°
F = (1.8
×
°
C) + 32
Temperature difference:
1
°
C = 1 K
Kinematic viscosity
1 cSt
1
×
10
-6
m
2
/s
1.076
×
10
-5
ft
2
/s
1 St = 100 cSt
Rotational speed
1 min
-1
(rpm)
1 min
-1
(1/60 s
-1
)
1 rpm
Angle
1
°
1
°
(
π
/180 rad)
1
°
(deg)
Degrees, minutes, and
seconds may also be used.
Work
1 kcal
4.186
×
10
3
J
1 kcal
1 kgf
•
m
9.80665 J
7.233 ft
•
lbf
Different from torque
Power
1 kcal/h
1.16 W
1 kcal/h
Acceleration
1 G
9.80665 m/s
2
1 G
CAUTION
NOTE
