PMSM construction
Permanent-magnet synchronous AC servo platform for responsive speed, torque and position control.
Precision AC motion platforms
AC Servomotors
Compact permanent-magnet AC servo motor families for accurate speed, torque and position control—configured with matched feedback, drive electronics, gearbox and mechanical interfaces.
AS Series permanent-magnet platform
AC Servo Motor Range
Seven frame platforms provide high-response servo motors for matched motion systems. Motor, feedback and drive are selected together for the required speed, torque and positioning duty; final ratings are confirmed against the operating cycle.
AS Series configuration capability
Technical Features Across the Range
Available features vary by frame, winding and manufacturer platform and are confirmed with the selected motor and servo drive.
High-resolution feedback
Incremental or absolute encoder options, including applicable 17-bit to 23-bit absolute feedback platforms.
Holding brake
Optional 24 V holding brake on applicable models for vertical axes and controlled holding duties.
Shaft configuration
Keyed or plain shaft options selected around the coupling, gearbox and equipment interface.
Ingress protection
Typical IP65 to IP67 configurations, subject to shaft, connector and mounting exclusions.
Thermal design
Natural convection cooling on many smaller and medium frames, with enhanced cooling for applicable larger outputs.
Peak performance
Peak torque commonly around 2.5–3.5 times rated torque for short-duration acceleration, subject to motor-drive matching.
Voltage classes
200/230 V and 400 V winding classes according to frame size, speed class and required output.
Representative selection data
Typical Technical Data by Frame Size
Use the frame and performance values below to identify the appropriate family before detailed application review.
| Frame | Typical supply | Typical rated power | Rated speed | Rated torque | Peak torque | Typical max. speed | Typical protection |
|---|---|---|---|---|---|---|---|
| 40 mm | 100–230 VAC | 50–200 W | 3,000 rpm | 0.16–0.64 N·m | 0.48–2.0 N·m | 4,500–7,150 rpm | IP65–IP67 |
| 60 mm | 200–230 VAC | 200–750 W | 3,000 rpm | 0.64–2.4 N·m | 1.9–7.2 N·m | 4,500–7,150 rpm | IP65–IP67 |
| 80 mm | 200–230 / 400 VAC | 400 W–1.0 kW | 2,000–3,000 rpm | 1.27–4.5 N·m | 4–13.5 N·m | 4,500–6,700 rpm | IP65–IP67 |
| 90 mm | 200–230 VAC | 750 W–1.5 kW | 2,000–3,000 rpm | 2.4–6 N·m | 7–18 N·m | 3,000–5,000 rpm | IP65 typical |
| 110 mm | 200–230 / 400 VAC | 0.8–2.0 kW | 2,000–3,000 rpm | 4–10 N·m | 12–30 N·m | 4,000–5,000 rpm | IP65 typical |
| 130 mm | 200–230 / 400 VAC | 1.0–3.0 kW | 1,500–3,000 rpm | 5–15 N·m | 14–40+ N·m | 3,000–5,000 rpm | IP65–IP67 |
| 142 mm | 400 VAC class | Approx. 3–10+ kW* | 1,500–5,000 rpm | 10–30+ N·m | 30–75+ N·m | 3,000–6,000 rpm | IP65–IP67 |
Selection note: Frame size is the square mounting-flange dimension, not motor body length. Values are representative family envelopes across motor lengths, windings and speed classes; rated power, peak torque and maximum speed are not one simultaneous operating point. Final continuous and peak duty is confirmed with the matched servo drive. *142 mm output depends strongly on motor length, voltage and cooling.
AC Servo Motor Technical DatasheetDownload the AS Series frame, torque, speed, feedback and motor-drive integration information.
Technical PDFRequest Technical Datasheet →Matched servo electronics
Servo Motor & Drive Integration
A servo motor achieves its commanded motion through a correctly matched drive, feedback device and control architecture. SDT selects the motor and drive together around the supply, motion profile, peak duty, feedback resolution and machine interface.
Control matched to the application
From motor selection to controlled machine motion
The servo drive regulates motor current and uses feedback to close the control loops required by the machine. Correct pairing supports stable response, repeatable positioning and reliable protection across the operating cycle.
- Speed, torque or position-control modes
- Encoder or resolver feedback matching
- Current, velocity and position-loop tuning
- Controlled acceleration and deceleration
- Configurable I/O and industrial communications
- Electrical, overload and thermal protection
Available functions, communications and safety features vary by drive platform and are confirmed during application review.
Performance-led servo selection
Servo Performance & Integration Capability
Selection extends beyond frame size and rated power. The motor, feedback, drive and mechanical interface are matched as one system around the required motion profile.
Dynamic performance
Applicable platforms provide peak torque around 300% of rated torque and peak speed up to 5,000 rpm for rapid acceleration and controlled deceleration.
Feedback & drive matching
Incremental or multi-turn absolute feedback can be paired with matched 220 V or 400 V servo drives for speed, torque or position control.
Machine-ready configuration
Shaft variants, keyed or tapped ends, oil seals, holding brakes, connectors and matched cables support practical OEM integration.
Capability varies by series and frame size. Peak duty, feedback, protection and drive pairing are confirmed during application review.
Feedback
Encoder or resolver selected for commutation, speed and position-control accuracy.
Matched servo drive
Current, voltage, control mode and protection matched to the chosen winding and duty.
Gearbox integration
Planetary or application-specific gearbox selected for ratio, backlash and output loading.
Mechanical interface
Shaft, flange, connectors and mounting details adapted to the equipment envelope.
Brake & holding
Fail-safe holding brake and release voltage configured where the axis requires it.
Production supply
Verified motor-drive configuration documented for repeatable OEM production.
Define Your AC Servo Requirement
Share the load, speed profile, supply, feedback, gearbox and installation constraints.