Schneider AEG CGD21-TB Servo Motor
Schneider AEG CGD21-TB
The CGD21-TB is a brushless servo motor launched by Schneider Electric (formerly AEG Modicon), belonging to the high-performance Series 21 servo product line. Widely applied in industrial automation, robotics, CNC machine tools and high-precision positioning systems, this model maintains low temperature rise and high torque density during high-speed operation, thanks to its high thermal efficiency, compact structure and reliable closed-loop control performance.
Key Technical Specifications
Product Features
- Brushless structure – Eliminates brush wear, ensuring long service life and low maintenance requirements
- High thermal efficiency – Adopts high thermal conductivity materials and optimized heat sinks to maintain low temperature rise under full-load operation, ideal for continuous working conditions
- Compact & lightweight – Small shaft diameter and overall weight below 0.5 kg, easy to install in space-constrained equipment
- High torque density – Permanent magnet rotor combined with precision control algorithms enables rapid acceleration/deceleration and high positioning accuracy
- Multiple interfaces – Supports digital communication protocols of standard servo drives, easy to integrate into PLC and motion control systems
- Modular design – Separate design of motor body, encoder and connection terminals for convenient replacement and maintenance
Structure & Components
- Stator: Aluminum alloy or steel frame with internal three-phase copper windings; low-impedance design for enhanced efficiency
- Rotor: Embedded neodymium iron boron (NdFeB) permanent magnet structure delivering strong magnetic flux, paired with high-precision bearings for low-friction rotation
- Encoder: Generally incremental optical or magnetic encoder with resolution above 1,000 ppr, directly mounted at the motor rear end
- Heat dissipation system: Housing with heat sinks or optional air/water cooling accessories to ensure long-term high-load operation
- Terminal block: Standardized protective junction box compatible with IEC 60320 / M12 interfaces, facilitating on-site wiring
- Protection class: IP54 (dustproof and splash-proof); some models offer IP65 protection for harsh industrial environments
Typical Application Fields
| Application Scenario | Description |
|---|---|
| Robot joints | High torque density and fast response meet motion requirements of multi-DOF robotic arms |
| CNC machine tools | Precise position control and low inertia suitable for high-speed cutting, milling, drilling and other machining processes |
| Packaging & printing | Provides reliable closed-loop drive for high-speed conveying and positioning systems |
| Automated assembly lines | Coordinates with PLC and Modicon controllers to realize synchronous multi-axis motion |
| Aerospace test platforms | Compact, lightweight and low-noise performance ideal for ground simulation test benches |
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ABB 丨 GE 丨Allen Bradley 丨 Honeywell 丨 Emerson 丨 Bently Nevada 丨 Westinghouse
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