The YASKAWA SGMRV-05ANA-YR11 is a compact AC servo motor from Yaskawa Sigma-5 platform, built for motion systems where repeatability, smooth low-speed control, and fast response matter more than raw brute force. In real machines, that usually means precise axes: indexing tables, pick-and-place mechanisms, small robotic joints, packaging equipment, automated test rigs, and general-purpose factory automation where you want accurate positioning without turning your control cabinet into a space heater.
What makes the SGMRV family attractive is the “industrial sweet spot”: enough torque to move real loads, small enough to package easily, and designed to work as part of a servo ecosystem (motor + drive + feedback + tuning tools). The SGMRV-05ANA-YR11 sits in the 0.45 kW (450 W) class, which is a very common power band for light-to-medium duty axes—stronger than tiny stepper-like servo solutions, but still controllable, efficient, and cost-effective.
One practical note for buyers and maintenance teams: this specific model is often listed as discontinued by the manufacturer in the aftermarket channel, which usually means it’s still widely used in the field and commonly stocked as surplus/new-old-stock or refurbished units.That makes traceability, condition, and correct matching to the servo drive especially important when you’re replacing a motor on a production line.
Technical Snapshot (Commonly Listed Specs)
The table below summarizes widely published specifications for SGMRV-05ANA-YR11 from industrial parts suppliers. Always verify against the motor nameplate and the matching servo drive documentation for your exact build and revision.
| Item | Value |
|---|---|
| Model | SGMRV-05ANA-YR11 |
| Product type | AC Servo Motor |
| Series / platform | Sigma 5 |
| Rated output power | 0.45 kW |
| Rated voltage | 200 V class |
| Rated current | 5.2 A |
| Rated torque | 2.86 N·m |
| Certification (as listed) | CE |
| Degree of protection (as listed) | IP20 |
| Ambient operating temperature (as listed) | 0 to 60 °C |
| Humidity (as listed) | Up to 80% non-condensing |
| Altitude (as listed) | Up to 1000 m without derating |
| Lifecycle note (commonly listed) | Discontinued by manufacturer |
Where SGMRV-05ANA-YR11 Fits Best
This motor is typically chosen when you need servo-level positioning (encoder feedback, closed-loop control, high stiffness, fast settling) without oversizing. Here’s a practical “fit map”:
| Application | Why this motor class is a good fit | Typical goal |
|---|---|---|
| Packaging axes (cut, seal, feed) | Fast accel/decel with repeatable stops | Short cycle times, less scrap |
| Pick-and-place modules | Stable positioning and quick response | Accuracy + throughput |
| Indexing tables / dial tables | Consistent torque, tight positioning | Repeatable index accuracy |
| Small robot joints / external axes | Smooth motion control under varying load | Path quality, less vibration |
| Lab automation / test fixtures | Controlled moves with predictable settling | Measurement repeatability |
| General machine retrofit | Common 200 V servo class simplifies integration | Faster restart after failure |
Integration Notes That Save Real Time
Servo motors are not “plug any motor into any drive” devices. The SGMRV-05ANA-YR11 is part of a Sigma-5 ecosystem, so the best outcomes come from treating it like a matched mechatronics set.
1) Drive matching (critical)
A servo motor must be paired with a compatible servo amplifier (servo drive) that supports:
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the correct voltage class (here, 200 V class is commonly listed)
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the feedback type and tuning methods used by the Sigma platform
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the right capacity range for a ~450 W motor so you don’t run into current limits under acceleration
If the original system used a Sigma-5 SERVOPACK, keep the same family whenever possible during replacement. Mixing generations can work, but it’s where commissioning time likes to explode.
2) Mechanical coupling and inertia reality
In the real world, many “servo problems” are mechanical problems wearing a servo mask. When installing or replacing the motor:
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Check coupling alignment and runout (misalignment creates periodic torque ripple and heats bearings)
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Confirm load inertia and backlash (too much backlash makes tuning look unstable)
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Inspect for stiction (sticky linear guides can cause hunting at low speed)
A 450 W servo can feel “too powerful” on a light axis if the mechanics are sloppy. The motor is doing what it’s told; the machine is just arguing back.
3) Cabling, grounding, and noise hygiene
Sigma-class servos can be sensitive to grounding and cable routing. Good practice:
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Separate motor power cables from encoder/feedback cables
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Use proper shielding termination and a defined ground strategy
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Keep cable lengths and routing similar to the original build when possible
This is boring work, but it prevents intermittent encoder alarms and “it only fails on humid days” ghost stories.
Commissioning Checklist (Replacement or New Install)
| Step | What to verify | Why it matters |
|---|---|---|
| Nameplate check | Model, voltage class, encoder/feedback, brake (if present) | Prevents mismatch failures |
| Drive parameter set | Correct motor model selected in drive | Enables correct commutation/tuning |
| Rotation direction | Axis positive direction matches controller | Avoids crashes on first jog |
| Auto-tuning / gain setup | Start conservative, then optimize | Fast settling without oscillation |
| Thermal check | Monitor motor and drive temps under load | Confirms sizing and airflow |
| Repeatability test | Run the same move 50–100 cycles | Proves stability, not just “it moved once” |
Reliability, Service, and Lifecycle Considerations
Because SGMRV-05ANA-YR11 is frequently sold through the aftermarket and is often labeled discontinued by the manufacturer, a smart purchasing process is half the product. When sourcing:
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Ask for photos of the exact nameplate and shaft condition
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Confirm whether the unit is new, unused surplus, or refurbished (and what “refurbished” actually means)
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Prefer sellers that provide test documentation or at least an explicit functional guarantee
A servo motor can look cosmetically perfect and still have issues (bearing wear, encoder faults, moisture ingress during storage). Conversely, a slightly scuffed body can run flawlessly for years. Condition is about measurements, not vibes.
Summary
The YASKAWA SGMRV-05ANA-YR11 is a Sigma-5 450 W / 200 V class AC servo motor designed for precise, responsive motion in compact industrial systems. Key published specs commonly list 0.45 kW output, 5.2 A rated current, and 2.86 N·m rated torque, making it a strong candidate for light-to-medium axes that need clean positioning and dependable cycle performance. With correct drive matching, sane mechanics, and careful commissioning, it’s the kind of motor that quietly does its job for years—and only gets noticed when someone forgets to tighten a coupling.
If you share the servo drive model used with this motor (for example, the exact SERVOPACK code), I can write a tighter “compatibility + replacement mapping” section without guessing.
