YASKAWA SGM7E - Page 47

3.2 Specifications and Ratings
3.2.2 Ratings
3-8
SGM7D-  I and -  J
*1. The rated torques are the continuous allowable torque values at a surrounding air temperature of 40˚C with an
aluminum heat sink of the dimensions given in the table.
*2. If you use an SGD7S-120A008 SERVOPACK and SGM7D Servomotor together, use the ratios given on the bot-
tom line.
*3. The thrust loads and moment loads that are applied while a Servomotor is operating are roughly classified into
the following patterns. Design the machine so that the thrust loads or moment loads will not exceed the values
given in the table.
The allowable load is for a static load in one direction.
When designing the system, multiply the allowable load by the following safety coefficient depending on the
type of load.
• Smooth load with no shock: 1/3
• Light repetitive load: 1/5
• Shock load: 1/10
Voltage 200 V
SGM7D- 28I 70I 1ZI 1CI 2BI 2DI 06J 09J 18J 20J 38J
Rated Output W 264 440 628 817 691 754 75 113 226 251 358
Rated Torque
*1
Nm 28.0 70.0 100 130 220 240 6.00 9.00 18.0 20.0 38.0
Instantaneous
Maximum Torque
Nm 50.0 100 150 200 300 400 8.00 15.0 30.0 45.0 60.0
Stall Torque Nm 28.0 70.0 100 130 220 240 6.00 9.00 18.0 20.0 38.0
Rated Current Arms 5.2 5.6 5.5 5.0 5.6 4.8 4.0 3.4 3.0 2.2 3.1
Instantaneous
Maximum Current
Arms 14.1 10.6
Rated Motor Speed
min
-1
90 60 30 120 90
Maximum Motor Speed
min
-1
108 72 60 48 144
Torque Constant
Nm/
Arms
6.90
13.9 20.8 27.8 41.5 54.4 1.71 3.29 6.62 9.88 13.3
Motor Moment of
Inertia
×10
-4
kgm
2
1800 2000 2300 2850 3400 4000 150 210 240 260 330
Rated Power Rate kW/s 4.36 24.5 43.5 59.3 142 144 2.40 3.86 13.5 15.4 43.8
Rated Angular
Acceleration Rate
rad/s
2
156 350 435 456 647 600 400 429 750 769 1150
Heat Sink Size mm 550 × 550 × 30
Allowable Load Moment of Iner-
tia (Motor Moment of Inertia
Ratio)
50
times
125
times
*2
100
times
250
times
*2
90
times
230
times
*2
80
times
200
times
*2
100
times
150
times
350
times
700
times
*2
250
times
600
times
*2
240
times
550
times
*2
220
times
550
times
*2
180
times
450
times
*2
With External Regenera-
tive Resistor and
Dynamic Brake Resistor
800
times
2,000
times
2,500
times
3,000
times
100
times
150
times
700
times
900
times
2,500
times
2,000 times
Allow-
able
Loads
*3
Allowable
Thrust
Load
Forward
N
4 × 10
4
3 × 10
4
Reverse
N
2 × 10
4
1 × 10
4
Allowable
Moment Load
Nm 400 200
Rigidi-
ties
Thrust Dis-
placement
Rigidity
Forward
mm/N
2 × 10
-6
3 × 10
-6
Reverse
mm/N
3 × 10
-6
4 × 10
-6
Moment Dis-
placement
Rigidity
rad/N  m
4 × 10
-7
2 × 10
-6