Yaskawa SGMGH-55DA
SGMGH
Lifecycle & replacement
Yaskawa defines this status as: “Legacy products can still be purchased, but are not intended for new applications.”
- SGM7GListed under “Retrofit / Upgrade Product”IAC note: Joined to matrix row: SGMGH; successor column: Retrofit / Upgrade Product
- Applies to Yaskawa America (the Americas)
- Yaskawa support matrix: replacement available, factory repair available, exchange not listed
On a servo axis the amplifier, motor, encoder and cables are a matched set. When a legacy component fails, the manufacturer's current generation usually does not pair with the rest of the original set, so the whole axis typically has to be upgraded together: drive, motor and cables, and often controller parameters or firmware. Replacing only the failed unit is rarely possible. Before ordering, talk to us: we can quote a like-for-like legacy spare or exchange unit to keep the existing installation running, or engineer a matched upgrade path for the axis.
IAC stocks legacy spares and exchange units and quotes upgrade paths. Send us the nameplate details and we will confirm a compatible replacement.
Source: Yaskawa America Support By Product - Servomotors, retrieved 2026-09-01.
Technical specifications
Ratings
| System Voltage | 400V AC |
| Rated Output 1 - kW (hp) | 5.5 (7.4) |
| Rated Torque 1 - N • m | 35 |
| Rated Torque 1 - lb • in (kg • cm) | 310 (357) |
| Instantaneous Peak Torque * - N • m | 87.6 |
| Instantaneous Peak Torque * - lb • in (kg • cm) | 775 (894) |
| Rated Current 1 - A RMS | 21 |
| Instantaneous Maximum Current 1 - A RMS | 55 |
Ratings [SGMAH Sigma II]
| System Voltage | 400V AC |
| Torque Constant - lb•in/A RMS (N•m/A RMS ) | 15.6 (1.76) |
| Moment of Inertia - lb•in•s 2 x 10 -3 | 78.8 |
| Moment of Inertia - kg•m 2 x 10 -4 | 89 |
| Holding Brake (at 20°C) - Capacity - W | 23.5 |
| Holding Brake (at 20°C) - Torque - N • m | 72.6 |
| Holding Brake (at 20°C) - Coil Resistance - W | 24.5 |
| Holding Brake (at 20°C) - Rated Current - A | 0.98 |
| Holding Brake (at 20°C) - Additional Inertia - lb•in•s 2 x 10 -3 | 7.75 |
| Rated Angular Acceleration * - rad/s 2 | 3930 |
| Inertia Time Constant - ms | 1.4 |
| Inductive Time Constant - ms | 14.4 |
Ratings [SGMGH]
| System Voltage | 400V AC |
| Torque Constant | 15.6 (1.76) |
| Moment of Inertia | 89 |
| Holding Brake (at 20°C) - Capacity | 23.5 |
| Holding Brake (at 20°C) - Torque | 72.6 |
| Holding Brake (at 20°C) - Coil Resistance | 24.5 |
| Holding Brake (at 20°C) - Rated Current | 0.98 |
| Holding Brake (at 20°C) - Additional Inertia | 7.75 |
| Rated Angular Acceleration * | 3930 |
| Inertia Time Constant | 1.4 |
| Inductive Time Constant | 14.4 |
Documentation & CAD
Files hosted by Yaskawa; links open the official document or download page. 3D CAD requires a free Yaskawa login.
Manuals
2D drawings
Get a quote for a replacement
Industrial Automation Co. stocks, sources, and repairs Yaskawa parts — new, refurbished, or exchange units with warranty.
Specifications compiled from official Yaskawa product documentation. Always confirm against the datasheet for your exact unit and revision.