Overview
The Yaskawa SGMAH-04A1A2C is a compact 400W brushless AC servo motor from the Sigma II product line. Rated for 2.8A continuous current and 3000 RPM base speed, this motor delivers precise torque and rapid acceleration for industrial automation applications. The unit is used condition, fully functional and ready for immediate deployment in retrofit or replacement applications.
Key Features
- 400W continuous power rating with 2.8A rated current
- 3000 RPM base speed for balanced torque-speed performance
- Low-inertia rotor design enabling fast acceleration and settling
- Compact NEMA frame footprint for space-constrained installations
- Sigma II series compatibility with SGDH servo amplifiers
- Brushless AC servo technology for maintenance-free operation
Technical Specifications
Key operating parameters for integration planning:
- Power Rating: 400W
- Continuous Current: 2.8A
- Base Speed: 3000 RPM
- Motor Type: Brushless AC Servo (BLAC)
- Series: Sigma II (SGMAH)
- Rotor Design: Low-inertia
- Encoder: 16-bit absolute or incremental (verify with unit)
- Condition: Used, fully functional
- Mounting: NEMA flange available
- Peak Torque: Up to 1,010 oz-in (frame dependent)
Typical Applications
The SGMAH-04A1A2C servo motor is well-suited for demanding motion control tasks including:
- Robotics & Automation: Joint actuators and arm servo drives requiring precise positioning
- Material Handling: Conveyor indexing, sorting, and transfer systems
- Packaging & Assembly: High-speed pick-and-place, wrapping, and labeling equipment
- Machine Tools: Spindle and axis drive retrofits where legacy servo compatibility is required
- Test Equipment: Dynamic load simulation and controlled motion testing
Compatibility & Replacements
Compatible With
- SGDH Sigma II servo amplifiers (recommended drive)
- Yaskawa Sigma II motion control architecture
- EtherCAT and CANopen network integration (via compatible drive)
- Multiple programming platforms and industrial controllers
- Horizontal and vertical mounting orientations
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The SGMAH-04A1A2C may replace other SGMAH-04 frame variants with matching flange and encoder specifications. Consult Yaskawa documentation or your controls engineer for confirmed cross-references.
Works With
- SGDH-series servo drives (SGDH-04FE and compatible models)
- Yaskawa Sigma II system software
- Standard servo motor connectors and pre-wired cable assemblies
- Absolute and incremental encoder feedback systems
- Industrial automation platforms requiring low-latency servo control



