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Technical Data
Small electric motors are available in both AC and DC types. DC motors offer certain advantages over AC units. They are typically more compact, have a higher power to weight ratio and speed can be controlled by varying the supply voltage.
Several years ago, Igarashi developed an AC motor program based on the design of a DC motor. These motors have the same compact construction as the DC motors and are sometimes even available with an internal rectifying system.
The final specifications can be adapted to customers needs to produce an ideal solution. An individual characteristic curve is provided for each motor based on the operating voltage.
There are 4 curves shown in the diagram:
 The speed curve (N) that is a straight line and can be shifted parallel to the original curve by increasing or reducing the voltage. The point where the speed curve intersects the xaxis represents the stall torque.
 The current consumption curve (I) is also a straight line and gives the current consumption from no load to stall.
 The output power curve (W) shows the power over the torque range.
 The efficiency curve (%) is a curve that can be calculated as a quotient of the output power and the power consumption over the torque range.
Torque Conversions

Equals 
gf cm 
kgf cm 
oz in 
lb in 
lb ft 
mNm 
Ncm 
Nm 
g cm 
1.0000

1.0000 
0.0010 
0.0139 
0.0009 
0.0001 
0.0981 
0.0098 
0.0001 
kgf cm 
1.0000

1000.0000 
1.0000 
13.8874 
0.8680 
0.0723 
98.0665 
9.8067 
0.0981 
oz in 
1.0000

72.0081 
0.0720 
1.0000 
0.0625 
0.0052 
7.0616 
0.7062 
0.0071 
lb in 
1.0000

1152.1292 
1.1521 
16.0000 
1.0000 
0.0833 
112.9849 
11.2985 
0.1130 
lb ft 
1.0000

13825.5506 
13.8256 
192.0000 
12.0000 
1.0000 
1355.8183 
135.5818 
1.3558 
mNm 
1.0000

10.1972 
0.0102 
0.1416 
0.0089 
0.0007 
1.0000 
0.1000 
0.0010 
Ncm 
1.0000

101.9720 
0.1020 
1.4161 
0.0885 
0.0074 
10.0000 
1.0000 
0.0100 
Nm 
1.0000

10197.2000 
10.1972 
141.6119 
8.8507 
0.7376 
1000.0000 
100.0000 
1.0000 