YASKAWA SGM7J-A5A, Technical Supplement

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Direct Drive Servo Motors
SGMCS (Small Capacity, Coreless or Medium Capacity, with Core)
242
Medium-Capacity Servo Motors with Cores: Ratings
*1. These values are for operation in combination with a SERVOPACK when the temperature of the armature winding is
20°C. These are typical values.
*2. The rated torques are the continuous allowable torque values at a surrounding air temperature of 40°C with a steel
heat sink of the dimensions given in the table.
*3. The thrust loads and moment loads that are applied while a Servo Motor is operating are roughly classified into the fol-
lowing patterns. Design the machine so that the thrust loads or moment loads will not exceed the values given in the
table.
Note: For the bearings used in these Servo Motors, the loss depends on the bearing temperature. The amount of heat loss
is higher at low temperatures.
Voltage 200 V
Model SGMCS- 45M 80M 1AM 80N 1EN 2ZN
Rated Output
*1 W 707 1260 1730 1260 2360 3140
Rated Torque
*1, *2 N•m 45.0 80.0 110 80.0 150 200
Instantaneous Maximum Torque
*1 N•m 135 240 330 240 450 600
Stall Torque
*1
N•m 45.0 80.0 110 80.0 150 200
Rated Current
*1
Arms 5.8 9.7 13.4 9.4 17.4 18.9
Instantaneous Maximum Current
*1
Arms 17.0 28.0 42.0 28.0 56.0 56.0
Rated Motor Speed
*1
min
-1
150 150
Maximum Motor Speed
*1
min
-1
300 300 250
Torque Constant N  m/Arms 8.39 8.91 8.45 9.08 9.05 11.5
Motor Moment of Inertia 
10
-4
kg•m
2 388 627 865 1360 2470 3060
Rated Power Rate
*1 kW/s 52.2 102 140 47.1 91.1 131
Rated Angular Acceleration Rate
*1
rad/s
2 1160 1280 1270 588 607 654
Heat Sink Size mm 750

750

45
Allowable
Load
*3
A mm 33 37.5
Allowable Thrust Load N 9000 16000
Allowable Moment Load N•m 180 350
F F
L
F
L
Where F is the external force,
Thrust load = F + Load mass
Moment load = 0 Where F is the external force,
Thrust load = F + Load mass
Moment load = F × L Where F is the external force,
Thrust load = Load mass
Moment load = F × (L + A)
A (Refer to the
values in the
table.)