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Yaskawa SGM7J-02AFA21 Sigma-7 200W Medium-Inertia Servo Motor with Plain Shaft
| Place of Origin | USA |
| Brand Name | YASKAWA |
| Model Number | SGM7J-02AFA21 |
Product Overview
The Yaskawa SGM7J-02AFA21 is a 200 W Sigma-7 medium-inertia rotary servo motor for compact, high-precision motion systems. It produces a rated torque of 0.637 Nm at 3000 RPM and an instantaneous maximum torque of 2.23 Nm.
The motor uses a 24-bit incremental serial encoder and a straight shaft without a key. The final 21 specification does not include a holding brake or oil seal.
Main Features
- 200 W rated output for 200 VAC-class servo systems.
- Medium-inertia design for stable mechanical load matching.
- Rated torque of 0.637 Nm and peak torque of 2.23 Nm.
- Rated speed of 3000 RPM and maximum speed of 6000 RPM.
- 24-bit incremental serial encoder.
- Straight shaft without a keyway.
- Compact 60 mm flange-class construction.
- No holding brake or oil seal.
Technical Specifications
| Manufacturer | Yaskawa Electric |
| Series | Sigma-7 SGM7J |
| Model | SGM7J-02AFA21 |
| Motor Type | Medium-Inertia Rotary Servo Motor |
| Power Supply Class | 200 VAC |
| Rated Output | 200 W |
| Rated Current | 1.6 Arms |
| Instantaneous Maximum Current | 5.8 Arms |
| Rated Torque | 0.637 Nm |
| Instantaneous Maximum Torque | 2.23 Nm |
| Rated Motor Speed | 3000 RPM |
| Maximum Motor Speed | 6000 RPM |
| Encoder | 24-Bit Incremental Serial Encoder |
| Shaft End | Straight Without Key |
| Options | Without Holding Brake or Oil Seal |
| Flange Class | 60 mm |
| Protective Structure | IP67, Excluding Shaft Opening |
Compatible System and Applications
The SGM7J-02AFA21 is normally used with a compatible 200 VAC Sigma-7 SERVOPACK such as an SGD7S-1R6A capacity. Compatibility must be checked against the drive interface, controller, encoder cable, power cable and machine parameter file.
Typical applications include electronic assembly equipment, inspection machinery, feeders, labelling systems, compact packaging equipment, semiconductor machinery and small robotic positioning axes.
Maintenance and Replacement Notes
Confirm that the installed coupling is designed for a plain shaft without a keyway. The SGM7J-02AFA21 should not be mechanically substituted by a keyed-shaft SGM7J-02AFA61 without checking the coupling, shaft engagement and assembly method.
Verify the complete suffix, incremental encoder, flange dimensions, connector arrangement, SERVOPACK capacity, firmware and motor parameters. Models with a holding brake, oil seal or absolute encoder may require different wiring and configuration.
Related Models
Related models include SGM7J-02AFA61 with a keyed and tapped shaft, SGM7J-02AFA2C with a holding brake, SGM7J-01AFA21 in the 100 W class and SGM7J-04AFA21 in the 400 W class.
Inquiry and Supply Notes
Please provide the complete nameplate, installed SERVOPACK model, coupling information, motor cable, encoder cable and photographs of the shaft. Product condition and included components must be confirmed for each quotation.
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