AC Synchronous Servo Motor

SM Series Permanent Magnet Synchronous Servo Motor

High-torque, high-response precision motion in a compact frame

Frame sizes
40 / 60 / 80 / 110 / 130 / 180 mm
Encoder
Incremental / absolute, up to 23-bit
Max speed
Up to 6000 rpm
Protection
IP65 standard, up to IP67 customizable
Price
? — On Request
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Overview

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.

Key Features

High-Energy Rare-Earth Magnets

Outstanding torque density in a compact, lightweight package for space-constrained machine designs.

Smooth Low-Speed Operation

Optimized electromagnetic design delivers low torque ripple and cogging for stable, precise motion.

Fast Dynamic Response

Low-inertia rotor with a high torque-to-inertia ratio for high-acceleration positioning cycles.

High-Precision Feedback

Incremental and absolute encoder options up to 23-bit resolution for exact speed and position control.

Wide Speed Range

Maximum speed up to 6000 rpm depending on model, covering both high-speed and low-speed applications.

Rugged Protection

IP65 protection as standard with shaft oil seal, customizable up to IP67; Class F insulation for thermal reliability.

Six Frame Sizes

40 / 60 / 80 / 110 / 130 / 180 mm flanges, each available in standard or holding-brake versions.

Matched System Pairing

Designed to operate as a complete matched servo system with EURA DRIVES SD20/SDE20 series drives.

Specifications

General

Motor typePermanent magnet synchronous servo motor (PMSM)
Frame / flange sizes40 / 60 / 80 / 110 / 130 / 180 mm
VariantsStandard and with electromagnetic holding brake
Rated power50 W – 6 kW class (frame dependent)
Max speedUp to 6000 rpm (model dependent)

Performance & Construction

Magnet materialHigh-performance rare-earth permanent magnet
Encoder optionsHigh-resolution incremental or absolute, up to 23-bit
Insulation classClass F
Protection classIP65 standard (with shaft oil seal); up to IP67 customizable
Brake optionElectromagnetic holding brake for vertical axes and safety holding

Applications

Semiconductor equipment Photovoltaic equipment Lithium battery equipment Industrial robots CNC machine tools Packaging machinery Printing machinery Textile machinery Food & beverage Medical equipment Logistics & conveying Automated production lines

Models & Ordering

Model family SM + frame size: SM40, SM60, SM80, SM110, SM130, SM180 — twelve standard configurations (each frame size in standard and with-brake versions). Matched motor families for the SD20 drive series include SMS (3000/2500 rpm), SMM (2000/1500 rpm) and SML (1000 rpm) with 60–180 mm flanges.

Not sure which model fits your machine? Contact us with your application details — our team will recommend the right drive, motor and options.

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