0.1–110 kW
SD20-E Bus-Type Servo Drive System
Third-generation bus servo performance with built-in EtherCAT

High-torque, high-response precision motion in a compact frame
The SM Series permanent magnet synchronous servo motor is a high-performance motion solution, engineered to pair seamlessly with EURA DRIVES servo drives to form a complete, tightly integrated servo system. Built around high-energy rare-earth permanent magnets, the SM Series delivers exceptional torque density and efficiency in a compact, lightweight frame.
Advanced electromagnetic design minimizes torque ripple and cogging for smooth, stable operation even at low speeds, while the optimized low-inertia rotor provides the fast dynamic response demanded by high-acceleration positioning cycles. High-resolution encoder feedback — available in incremental or absolute versions — ensures precise speed and position control for exacting automation tasks.
With six flange sizes from 40 mm to 180 mm, each offered in standard and holding-brake versions, the SM Series covers a broad spectrum of automation loads. Rugged IP65 construction with shaft oil seal and Class F insulation guarantees a long, reliable service life even in harsh industrial environments.
Outstanding torque density in a compact, lightweight package for space-constrained machine designs.
Optimized electromagnetic design delivers low torque ripple and cogging for stable, precise motion.
Low-inertia rotor with a high torque-to-inertia ratio for high-acceleration positioning cycles.
Incremental and absolute encoder options up to 23-bit resolution for exact speed and position control.
Maximum speed up to 6000 rpm depending on model, covering both high-speed and low-speed applications.
IP65 protection as standard with shaft oil seal, customizable up to IP67; Class F insulation for thermal reliability.
40 / 60 / 80 / 110 / 130 / 180 mm flanges, each available in standard or holding-brake versions.
Designed to operate as a complete matched servo system with EURA DRIVES SD20/SDE20 series drives.
| Motor type | Permanent magnet synchronous servo motor (PMSM) |
|---|---|
| Frame / flange sizes | 40 / 60 / 80 / 110 / 130 / 180 mm |
| Variants | Standard and with electromagnetic holding brake |
| Rated power | 50 W – 6 kW class (frame dependent) |
| Max speed | Up to 6000 rpm (model dependent) |
| Magnet material | High-performance rare-earth permanent magnet |
|---|---|
| Encoder options | High-resolution incremental or absolute, up to 23-bit |
| Insulation class | Class F |
| Protection class | IP65 standard (with shaft oil seal); up to IP67 customizable |
| Brake option | Electromagnetic holding brake for vertical axes and safety holding |
Not sure which model fits your machine? Contact us with your application details — our team will recommend the right drive, motor and options.
0.1–110 kW
Third-generation bus servo performance with built-in EtherCAT
0.1–45 kW
High-response, full-featured servo control from 100 W to 45 kW
0.2–1.8 kW
1.2 kHz high-response precision servo in a slim single-board design