5.2 Specifications and Ratings
5.2.4 Ratings of Servomotors without Gears for the SGM7A-15 to -70
5
Specifications, Ratings, and Exter
nal Dimensions of SGM7A Servomotors
5-7
5.2.4
Ratings of Servomotors without Gears
for the SGM7A-15 to -70
Note: Refer to the following section for footnotes *2 to *7 and *9.
Notes for the Ratings of Servomotors without Gears
Voltage
200 V
Model SGM7A-
15A
20A
25A
30A
40A
50A
70A
Rated Output
*7
kW
1.5
2.0
2.5
3.0
4.0 5.0 7.0
Rated Torque
*2
,
*7
N
m
4.90 6.36
7.96
9.80 12.6
15.8
22.3
Instantaneous Maximum
Torque
*7
N
m
14.7
19.1
23.9
29.4
37.8
47.6
54.0
Rated Current
*7
Arms
9.3
12.1
15.6
17.9
25.4
27.6
38.3
Instantaneous Maximum Cur-
rent
*7
Arms
28
42
51
56
77
84
105
Rated Motor Speed
*7
min
-1
3000
Maximum Motor Speed
*7
min
-1
6000
*9
Torque Constant
N
m/Arms
0.590 0.561
0.538
0.582
0.519
0.604
0.604
Motor Moment of Inertia
×
10
-4
kg
m
2
2.00
2.47
3.19
7.00
9.60
12.3
12.3
With Holding
Brake
2.25
2.72
3.44
9.20
11.8
14.5
−
With Batteryless
Absolute Encoder
2.00
2.47
3.19
7.00
9.60
12.3
12.3
Rated Power Rate
kW/s
120
164
199
137
165
203
404
With Holding
Brake
106
148
184
104
134
172
−
Rated Angular Acceleration
Rate
rad/s
2
24500
25700
24900
14000
13100
12800
18100
With Holding
Brake
21700
23300
23100
10600
10600
10800
−
Heat Sink Size (aluminum)
mm
300
×
300
×
12
400
×
400
×
20
Protective Structure
*3
Totally enclosed, self-cooled, IP67
Totally
enclosed,
sepa-
rately
cooled
(with fan),
IP22
Holding
Brake
Specifica-
tions
*4
Rated Voltage
V
24 VDC
−
Capacity W
12
10
Holding Torque
N
m
7.84
10
20
Coil Resistance
Ω
(at 20
°
C)
48
59
Rated Current
A (at 20
°
C)
0.5
0.41
Time Required to
Release Brake
ms
170
100
Time Required to
Brake
ms
80
Allowable Load Moment of Inertia
(Motor Moment of Inertia Ratio)
10 times
5 times
With External Regenerative
Resistor and External Dynamic
Brake Resistor
*5
20 times
15 times
Allowable
Shaft
Loads
*6
LF
mm
45
63
Allowable Radial
Load
N
686
980
1176
Allowable Thrust
Load
N
196
392
+10%
0
