4
SJME-01A SJME-02A SJME-04A SJME-08A
Torque (
N m
)Torque (
N m
)Torque (
N m
)Torque (
N m
)
0 0.25 05.057.000.1
0
3000
4000
2000
1000
5000
A
B
A
B
3000
4000
2000
1000
5000
0
0 0.5 0.15.10.2
A
B
3000
4000
2000
1000
5000
0
01234
3000
4000
2000
1000
5000
0
A
B
02 468
Motor speed
(
RPM
)
Motor speed ( RPM )
Motor speed
(
RPM
)
Motor speed ( RPM )
Holding Brake Specifications
Speed/Torque Characteristics
Voltage 100/200 VAC
Servo motor Model SJME-
A 01 02 04 08
Applicable Servo Amplifier SJDE- A 01 02 04 08
Rated output *
1
W 100 200 400 750
Rated torque *
1,
*
2
Nm 0.318 0.637 1.27 2.39
Instantaneous peak torque *
1
Nm 0.955 1.91 3.82 7.16
Rated current *
1
A
rms
0.84 1.1 2.0 3.7
Instantaneous max. current *
1
A
rms
2.5 3.3 6.0 11.1
Rated speed *
1
RPM 3000 (for 200V models)
*3
Max. speed *
1
RPM 4500 (for 200V models)
*3
Torque constant Nm/A
rms
0.413 0.645 0.682 0.699
Rotor moment of inertia kg•m
2
0.0634 x 10
-4
0.330 x 10
-4
0.603 x 10
-4
1.50 x 10
-4
Rated power rate *
1
kW/s 16.0 12.3 26.7 38.1
Rated angular
acceleration *
1
rad/s
2
50200 19300 21100 15900
Time rating Continuous
Thermal class B
Vibration class 15 μm or below
Withstand voltage 1500 VAC for one minute
Insulation resistance 500 VDC, 10 MW min.
Enclosure Totally enclosed, self-cooled, IP55 (excluding shaft opening and connectors)
Impact resistance
Impact acceleration: 490 m/s
2
in three directions – vertical, side to side, and front to back.
Impact occurrences: 2
Vibration resistance Vibration acceleration: 49 m/s
2
in three directions – vertical, side to side, and front to back.
Servo motor Model SJME-
A
01 02 04 08
Rated voltage 24 VDC ± 10%
Holding brake moment of inertia * kg •m
2
x 10
-4
0.0075 0.064 0.171
Capacity W 6 6.9 7.7
Minimum holding torque (Static
friction torque)
Nm 0.318 1.27 2.39
Coil resistance W (at 20 °C) 96 83 75
Rated current A (at 20 °C) 0.25 0.29 0.32
Brake release time ms 80 max.
Rise time for holding torque ms 100 max.
*1 These items and speed/torque characteristics quoted in combination with a SJDE servo amplifier are at an armature winding temperature of 100 °C. Other values are at 20 °C.
*2 The rated torques listed here are the values for the continuous allowable torque at 40 °C with an aluminium heatsink (250 mm x 250 mm x 6 mm) attached.
*3 Refer to the Speed/Torque Characteristics for rated speed and maximum speed for 100V models.
* To obtain the motor moment of inertia with a brake, add the holding brake moment of inertia to the rotor moment of inertia. The rated power rate and angular acceleration
of the motor will change according to the motor moment of inertia.
Notes:
1 The holding brake is only used to hold the load and cannot be used to stop the servo motor.
2 Do not use the holding brake when the servo is on. Failure to observe this caution may result in an over load of the servo amplifier or a decrease of brake life.
Note: Solid lines show the torque/speed characteristics of the servo motor at 200V and the broken lines show them at 100V.
Ratings and Specifications
Junma Servo Motors
A: Continuous Duty Zone B: Intermittent Duty Zone
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