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AC Servo Motor Spec Table
AC Servo Motor Specifications — 16 sizes
JIS C 4034-1
A servo motor with encoder feedback for precise position, speed, and torque control. Core component of industrial robots, machine tools, and automation.
Practical Notes
- Higher encoder resolution = better position accuracy. General use: 17-bit; high precision: 20-bit+.
- Inertia ratio (load/motor) should be within 5:1 for stability. Exceeding causes vibration or slow response.
Selection Guide
Encoder-feedback control for high-speed, high-precision, high-torque performance. Used in CNC machines, industrial robots, and semiconductor equipment. More expensive than steppers but superior in responsiveness and speed range.
JISAC Servo Motor
8 sizesRatings follow JIS C 4034-1, but the power, torque and dimensions in the table are manufacturer catalog values.
| Nominal | Type | Frame | Torque | Volt/Current | Use |
|---|---|---|---|---|---|
| 100W | AC Servo Motor | - | 0.32 | AC200 | SmallPrecision |
| 200W | AC Servo Motor | - | 0.64 | AC200 | SmallAutomation |
| 400W | AC Servo Motor | - | 1.27 | AC200 | General Automation |
| 750W | AC Servo Motor | - | 2.39 | AC200 | MediumAutomation |
| 1kW | AC Servo Motor | - | 3.18 | AC200 | Industrial Robot |
| 2kW | AC Servo Motor | - | 6.37 | AC200 | LargeAutomation |
| 3kW | AC Servo Motor | - | 9.55 | AC200 | Machine |
| 5kW | AC Servo Motor | - | 15.90 | AC200 | Large Machine |
Key Features
- Encoder feedback closed-loop; switchable between position, speed, and torque control modes
- Rated speed 2000–3000 rpm; instantaneous peak torque up to 300% of rated
- 17/23-bit absolute encoder; remembers position after power-off (battery-less)
Key Applications
CNC machine servo axes, industrial robot joints, semiconductor wafer transfer, injection machine e-drive, electron beam steering
FAQ
Most important servo motor selection parameters?
Continuous torque, peak torque, rated speed, and rotor inertia are key. Keep inertia ratio (load/motor) within 5:1.