Yaskawa SGM7G-44APK-YR11 – High-Torque AC Servo Motor | Sigma-7 Platform
Engineering Background: The Yaskawa Sigma-7 (Σ-7) series represents the pinnacle of Yaskawa Electric’s servo technology, engineered for demanding industrial motion control applications where precision, torque density, and reliability are non-negotiable. The SGM7G sub-series is specifically designed as a large-inertia, high-torque motor optimized for heavy-load axes including gantry systems, large-format CNC tables, and industrial robots.
Product Positioning: The SGM7G-44APK-YR11 is a 4.4 kW, 200 V class, flange-mount AC servo motor with keyed shaft and special-order suffix YR11, sourced directly through verified Yaskawa distribution channels. Konmask.com supplies this unit to procurement engineers who require documented authenticity, fast lead times, and technical pre-sales support.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | SGM7G-44APK-YR11 |
| Series | Sigma-7 (Σ-7) / SGM7G Large-Inertia |
| Rated Output Power | 4.4 kW |
| Voltage Class | 200 V AC (3-phase) |
| Rated Torque | ~28.0 N·m (refer to Yaskawa datasheet) |
| Rated Speed | 1500 rpm |
| Maximum Speed | 3000 rpm |
| Encoder Type | 23-bit absolute encoder (standard Sigma-7) |
| Mounting Style | Flange mount (IEC / NEMA compatible) |
| Shaft Configuration | Keyed shaft (K suffix) |
| Protection Rating | IP67 (shaft seal standard on SGM7G) |
| Insulation Class | Class F |
| Ambient Temperature | 0 °C to +40 °C (operating) |
| Country of Origin | Japan |
| HS Code | 8501.52 |
| Approximate Weight | 560 g (shipping weight; motor weight per datasheet) |
| Compatible Servo Drive | SGD7S / SGD7W Sigma-7 series SERVOPACKs |
Proven Application Environments
- CNC Machining Centers – High-torque axis drives for heavy-duty milling and turning
- Industrial Robots – Joint actuators on 6-axis articulated arms requiring large inertia matching
- Semiconductor & FPD Equipment – Precision stage positioning with absolute encoder feedback
- Injection Molding Machines – Clamp and injection axis servo drives
- Printing & Packaging Lines – Register control and web tension management
- Automated Guided Vehicles (AGV) – Drive wheel servo systems
- Laser Cutting Systems – High-dynamic gantry axis control
Engineering Advantages
- 23-bit Absolute Encoder – 8,388,608 pulses/rev resolution; no homing required after power cycle
- Large-Inertia Design (SGM7G) – Optimized rotor inertia ratio for direct coupling to heavy loads without gearbox
- Vibration Suppression – Sigma-7 SERVOPACK supports 3-mode notch filter and model-following control
- Auto-Tuning – One-parameter tuning via SigmaWin+ software reduces commissioning time by up to 90%
- IP67 Shaft Seal – Suitable for coolant-splash environments in machine tool applications
- Safety Compliance – STO (Safe Torque Off) function available via compatible SGD7S SERVOPACK
- Global Certification – CE, UL, cUL, KC marked; RoHS compliant
System Architecture & Signal Flow
The SGM7G-44APK-YR11 operates within the Yaskawa Sigma-7 closed-loop architecture:
- Controller (PLC/CNC) → EtherCAT / MECHATROLINK-III / Pulse-train command → SGD7S SERVOPACK → 3-phase 200 V power + encoder feedback → SGM7G-44APK-YR11 Motor
- Encoder cable: Yaskawa JZSP-CVP series (absolute, battery-backed or batteryless)
- Power cable: Yaskawa JZSP-B series (motor power + brake if equipped)
- Tuning & monitoring: SigmaWin+ v7 via USB or Ethernet to SERVOPACK
Sourcing & Quality Verification
Konmask.com applies a 4-step verification protocol to every Yaskawa unit shipped:
- Origin Traceability – Serial number cross-referenced against Yaskawa factory batch records
- Physical Inspection – Label integrity, connector condition, shaft runout, and encoder connector seating verified
- Functional Bench Test – Motor spun under no-load conditions with compatible SERVOPACK; encoder communication confirmed
- Documentation Package – CE declaration, RoHS certificate, and packing list provided with every shipment
Procurement Process
- Submit RFQ – Email [email protected] with quantity, delivery address, and required lead time
- Receive Quotation – Formal quotation with unit price, shipping cost, and ETA within 24 business hours
- Order Confirmation – Pro-forma invoice issued; payment via T/T, PayPal, or trade finance
- Shipment & Tracking – DHL / FedEx / UPS express with real-time tracking number provided
- After-Sales Support – 12-month warranty; technical support via email and WhatsApp
Technical FAQ
Q: What SERVOPACK is compatible with the SGM7G-44APK-YR11?
A: The SGD7S-370A (37A rated) or SGD7S-470A (47A rated) Sigma-7 SERVOPACKs are the primary matches for 4.4 kW at 200 V. Confirm with Yaskawa’s capacity selection tool or contact Konmask for a matched drive recommendation.
Q: Does this motor include a holding brake?
A: The base model SGM7G-44APK-YR11 does not include a holding brake (no “B” suffix). If a brake is required, please inquire about the SGM7G-44APKB-YR11 variant.
Q: Is the YR11 suffix a standard or special-order designation?
A: YR11 is a Yaskawa special-order suffix indicating specific mechanical or electrical customization. Konmask maintains stock of this variant; contact us to confirm current availability.
Q: What is the lead time for this model?
A: In-stock units ship within 3–5 business days. For out-of-stock scenarios, standard lead time is 4–8 weeks from Yaskawa factory. Konmask will advise exact availability upon RFQ.
Q: Can you provide a Certificate of Conformance (CoC)?
A: Yes. A CoC, CE declaration, and RoHS certificate are included with every shipment at no additional charge.
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