YASKAWA SGMG-13V6W-YG11 AC Servo Motor 1.3 kW for CNC and Automation Smooth and Precise Motion Control

YASKAWA SGMG-13V6W-YG11 AC Servo Motor – 1.3 kW Medium-Inertia Workhorse for CNC and Automation

The YASKAWA SGMG-13V6W-YG11 is a 1.3 kW, 200 V AC servo motor from the SGMG medium-inertia family, widely used in CNC routers, machining centers and other precision automation systems. This motor combines a robust mechanical design with smooth torque output and precise position control, making it a strong choice for machine upgrades, retrofits and new OEM designs.

Key Technical Specifications

Note: Exact mechanical details such as shaft key form, connector style, and encoder resolution should be confirmed in the official Yaskawa datasheet for SGMG-13V6W-YG11 before final design.

Designed for Medium-Inertia, High-Torque Jobs

The SGMG-13V6W-YG11 sits right in the sweet spot for many machine axes: 1.3 kW of power, 1500 rpm rated speed and 8.34 N·m rated torque.

That spec profile is ideal when:

• The axis carries a substantial load (tables, gantries, fixtures) and needs stable, vibration-free motion.

• The machine performs frequent start-stop cycles and rapid indexing, where a higher-inertia rotor helps dampen oscillations.

• Precise contouring is needed, such as in CNC routing, milling or complex packaging motions.

Medium-inertia motors like the SGMG series provide extra rotational inertia in the rotor, which acts like a mechanical “low-pass filter” for disturbances. You trade a tiny bit of acceleration speed for very smooth, controllable behavior — a swap that is often worthwhile on heavier axes or in processes where surface finish and path quality matter.

Part of Yaskawa’s Σ (Sigma) Servo Ecosystem

The SGMG motors are used in Yaskawa Σ-series servo systems (often paired with SGDB/SGDH or similar SERVOPACK drives).

That means:

• Proven compatibility with Yaskawa servo amplifiers designed for 200 V class Sigma-series.

• Access to a mature tuning environment and motion libraries through Yaskawa tools.

• Easier retrofit of older Σ-series machines by swapping a like-for-like SGMG motor.

For OEMs and machine rebuilders, this ecosystem aspect matters: when you pick SGMG-13V6W-YG11, you also get decades of field experience and documentation around Σ-series servo systems.

Where the SGMG-13V6W-YG11 Works Best

Because of its power/torque combination and medium inertia, SGMG-13V6W-YG11 is commonly found in:

• CNC routers and woodworking machinery – For X/Y gantry axes or heavy Z axes, especially on Routech and similar CNC platforms.

• Metalworking equipment – Indexing tables, feed axes, rotary positioning units.

• Packaging and material handling – Intermittent motion, seal jaws, pushers and feeders.

• General industrial automation – Any medium-load axis where precise positioning and repeatable torque are required.

If your axis needs more torque than a small frame Sigma servo, but you don’t want to jump to a big, heavy motor, this 1.3 kW class is often the “just right” option.

Performance and Control Characteristics

Key performance aspects you can expect from a well-tuned SGMG-13V6W-YG11 system include:

• Smooth low-speed operation
  The brushless synchronous design and encoder feedback allow precise control at low speeds, minimizing cogging and improving contour accuracy.

• Good dynamic response
  Paired with a modern Σ-series drive, SGMG motors benefit from improved motor constants and fast current loops, reducing settling time and improving following error during rapid moves.

• Stable behavior with high inertia loads
  Medium-inertia design makes it easier to tune difficult axes where load inertia is not perfectly matched, reducing hunting and reducing the risk of mechanical resonance.

• Repeatable position accuracy
  The incremental encoder and tight servo loop provide accurate indexing and path tracking, essential for CNC and precision automation.

Integration, Wiring and Commissioning Notes

When integrating a Yaskawa SGMG-13V6W-YG11 into a system, pay attention to:

1. Drive compatibility
   Use a Yaskawa servo amplifier designed for 200 V class Σ-series motors and sized for at least 16.7 A rated current with sufficient overload margin.

2. Encoder wiring and shielding
   Follow Yaskawa’s wiring diagrams for σ-series motors. Encoder cables should be well shielded and properly grounded to avoid noise issues in high-EMI environments.

3. Brake and I/O (if present)
   Some servo systems recommend a dedicated 24 VDC supply for motor brakes to avoid noise coupling into logic lines. This practice is referenced in Yaskawa documentation for similar servo products.

4. Mechanical mounting and coupling
   Ensure the flange is mounted on a flat, rigid surface and the shaft coupling is properly aligned. Misalignment quickly kills bearings, especially on high-precision servo axes.

5. Tuning and vibration suppression
   Use the drive’s built-in auto-tuning and vibration suppression features (where available). Even a few minutes of tuning makes a noticeable difference in contour quality and noise.

Upgrade and Retrofit Advantages

For machine builders and maintenance teams, SGMG-13V6W-YG11 has several practical advantages:

• Drop-in replacement for existing SGMG 1.3 kW axes
  If your legacy CNC or automation platform already uses SGMG motors, this model can often be installed with minimal mechanical changes.

• Balanced performance vs. cost
  The 1.3 kW torque/price ratio is attractive for mid-range axes where oversizing to a 2–3 kW motor would add cost and inertia without real benefit.

• Broad availability in the secondary market
  Because SGMG motors are widely used, there is a healthy supply of new, surplus and refurbished units, which can be useful for maintenance strategies that rely on fast replacement.

• Long-term ecosystem support
  Yaskawa’s Σ families have extensive documentation, conversion guides to newer generations (Sigma-5, Sigma-7), and a clear migration path when you eventually decide to modernize the drive side.

Summary

The YASKAWA SGMG-13V6W-YG11 AC servo motor is a 1.3 kW, 1500 rpm, 8.34 N·m medium-inertia unit engineered for reliable, precise motion in CNC and industrial automation environments. Its 200 V, 3-phase architecture integrates cleanly into Σ-series servo systems, offering stable performance on heavier axes, smooth low-speed control, and robust torque output.

For projects where you need a proven, medium-inertia Yaskawa solution with strong global availability and a mature drive ecosystem, SGMG-13V6W-YG11 is a very defensible choice from both an engineering and maintenance perspective.