Medium inertia AC servo motor EM3G-18
Output power
1800 W
Rated speed
1500 rpm
Maximum speed
3000 rpm
Rated torque
11.5 Nm
Flange
130 mm
EM3G-18 series is a medium speed and medium inertia standard AC servo motor. Output power 1800 W delivers the same output torque as other models 2000 W, but with has a shorten length size. Motors available with optical 23-bit or magnetic 17-bit absolute encoder.
Technical data
Rated torque
11.5 Nm
Maximum torque
31.0 Nm
Rated current (200 V models EM3G-18A)
14.5 A
Rated current (400 V models EM3G-18D)
7.1 A
Maximum current (200 V models EM3G-18A)
42.0 A
Maximum current (400 V models EM3G-18D)
21.2 A
Motor inertia (motor without brake)
22.3 kg∙cm²
Motor inertia (motor with brake)
22.9 kg∙cm²
Allowable radial shaft load
980 N
Allowable axial shaft load
392 N
Optional brake holding torque
≥20 Nm
Optional brake voltage
24 VDC
Weight (motor without brake)
8.3 kg
Weight (motor with brake)
10.0 kg
Rated torque
11.5 Nm
Maximum torque
31.0 Nm
Rated current (200 V models EM3G-18A)
14.5 A
Rated current (400 V models EM3G-18D)
7.1 A
Maximum current (200 V models EM3G-18A)
42.0 A
Maximum current (400 V models EM3G-18D)
21.2 A
Motor inertia (motor without brake)
22.3 kg∙cm²
Motor inertia (motor with brake)
22.9 kg∙cm²
Allowable radial shaft load
980 N
Allowable axial shaft load
392 N
Optional brake holding torque
≥20 Nm
Optional brake voltage
24 VDC
Weight (motor without brake)
8.3 kg
Weight (motor with brake)
10.0 kg
Available motor models
| Motor model | Encoder | Brake | Servo driver | Input drive supply voltage |
| Absolute optic encoder, resolution 23-bit (8 388 608 ppr) | - | ED3L-20AMA ED3L-20AEA ED3L-20APA | Three phase AC 200V...240V | |
| EM3G-18ALA244 | ✓ | |||
| EM3G-18ATA224 | Absolute magnetic encoder, resolution 17-bit (131 072 ppr) | - | ||
| EM3G-18ATA244 | ✓ | |||
| EM3G-18DLA224 | Absolute optic encoder, resolution 23-bit (8 388 608 ppr) | - | ED3L-20DMA ED3L-20DEA ED3L-20DPA | Three phase AC 380V...440V |
| EM3G-18DLA244 | ✓ | |||
| EM3G-18DTA224 | Absolute magnetic encoder, resolution 17-bit (131 072 ppr) | - | ||
| ✓ |
Dimensions of AC servo motor EM3G-18
Speed-torque curves of AC servo motor EM3G-18
Description of AC servo motor EM3G-18
EM3G-18 series is a medium speed and medium inertia standard AC servo motor. Output power 1800 W delivers the same output torque as other models 2000 W, but with has a shorten length size. Motors are available with optical 23-bit or magnetic 17-bit absolute encoder. Optional 24VDC brake is available.
EM3G servo motor series is designed to provide increased operating speed range without reducing output power. This feature significantly expands the range of possible usage applications and in many cases allows excluding a gearbox, improving reliability and reducing overall cost.
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