YASKAWA USAHEM-01-TL31 AC Servo Motor | Σ-II Series Motion Control Platform
Engineering Background
The YASKAWA USAHEM-01-TL31 is a compact AC servo motor designed for the YASKAWA Σ-II (Sigma-II) series servo drive platform — one of the most widely deployed motion control architectures in precision manufacturing. Built to YASKAWA’s stringent motion engineering standards, this motor delivers high torque density, low cogging, and exceptional velocity stability across demanding duty cycles. Note: The USAHEM-01-TL31 and USAHEM-01-TL41 share the same frame and mounting interface; verify the encoder resolution suffix when cross-referencing part numbers.
Product Positioning
Targeted at procurement engineers and maintenance teams sourcing OEM-equivalent replacements for Σ-II servo axes, the USAHEM-01-TL31 is the preferred choice for applications requiring sub-millisecond torque response, high repeatability, and seamless integration with SGDH/SGDS series amplifiers. Konmask supplies verified OEM units with full traceability documentation.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | YASKAWA Electric Corporation |
| Part Number | USAHEM-01-TL31 |
| Series | Σ-II (Sigma-II) |
| Motor Type | AC Servo Motor (Brushless Permanent Magnet) |
| Rated Output Power | 100 W (0.1 kW) |
| Rated Torque | 0.318 N·m |
| Rated Speed | 3,000 rpm |
| Maximum Speed | 5,000 rpm |
| Encoder Type | Incremental encoder (2,000 P/R) |
| Voltage Supply | 200 VAC, 3-phase / single-phase |
| Insulation Class | Class F (155°C) |
| Protection Rating | IP55 (shaft seal standard) |
| Mounting | Flange mount (IEC standard) |
| Shaft Type | Straight shaft with key |
| Weight | Approx. 0.5 kg |
| Country of Origin | Japan |
| HS Code | 850152 |
| Compatible Amplifier | SGDH-01AE, SGDS-01A (Σ-II series) |
Proven Application Environments
- CNC Machining Centers — Axis feed drives on vertical/horizontal machining centers requiring ±1 arc-second repeatability
- Semiconductor Wafer Handling — Pick-and-place gantries and wafer transfer robots demanding ultra-low vibration
- Electronic Assembly (SMT) — High-speed PCB placement machines with multi-axis synchronization
- Packaging Machinery — Servo-driven cam replacement on form-fill-seal and cartoning lines
- Textile & Winding Equipment — Tension-controlled winding axes with real-time torque feedback
- Medical Device Manufacturing — Precision dispensing and assembly cells requiring cleanroom-compatible IP55 sealing
- Laser Cutting & Engraving — High-dynamic XY positioning stages
Engineering Advantages
- High Torque-to-Inertia Ratio — Enables rapid acceleration/deceleration without overshooting, critical for short-stroke indexing
- Low Cogging Torque — Smooth velocity at low speeds; ideal for constant-velocity scanning and inspection applications
- Σ-II Native Integration — Plug-compatible with SGDH/SGDS amplifiers; no parameter remapping required on replacement
- IP55 Sealing — Resists coolant mist and fine particulate ingress in machine tool environments
- Compact Frame — 40 mm flange size minimizes machine footprint while delivering full 100 W output
- Thermal Stability — Class F insulation supports continuous duty in elevated ambient temperatures up to 40°C
- Proven MTBF — YASKAWA Σ-II motors are documented at >50,000 hours MTBF in controlled industrial environments
System Architecture & Signal Flow
The USAHEM-01-TL31 operates within the YASKAWA Σ-II closed-loop servo architecture as follows:
- Command Input — Motion controller (e.g., MP2000 series, third-party PLC) issues pulse-train or analog ±10 V velocity/torque reference to the SGDH/SGDS amplifier
- Amplifier Processing — SGDH amplifier executes position/velocity/torque control loops at 2 kHz bandwidth; outputs 3-phase PWM drive to motor windings
- Motor Actuation — USAHEM-01-TL31 converts electrical energy to mechanical torque; rotor position fed back via 2,000 P/R incremental encoder
- Feedback Loop — Encoder signals (A/B/Z differential) return to amplifier for real-time position correction; closed-loop bandwidth typically 200–400 Hz
- Safety Monitoring — Amplifier monitors motor thermistor (embedded in winding) for over-temperature protection; triggers fault relay on exceedance
Replacement note: When substituting USAHEM-01-TL31 for a failed unit, verify encoder cable pinout and amplifier parameter Pn002 (motor code) matches the replacement motor’s encoder resolution.
Sourcing & Quality Verification
- OEM Traceability — All units supplied with YASKAWA factory label, date code, and serial number intact; no remarked or refurbished units
- Pre-shipment Testing — Each motor undergoes no-load run-in test (3,000 rpm, 30 min), insulation resistance check (>100 MΩ at 500 VDC), and encoder signal verification
- Packaging — Original YASKAWA anti-static foam packaging or equivalent ESD-safe packaging for shaft and encoder connector protection
- Documentation — Certificate of conformity, test report, and packing list provided with every shipment
- Warranty — 12-month warranty against manufacturing defects from date of shipment
- Export Compliance — ECCN classification and export documentation available on request for international procurement
Procurement Process
- Submit RFQ — Email support@konmask.com with part number USAHEM-01-TL31, required quantity, and delivery timeline
- Quotation — Receive formal quotation with unit price (HKD/USD), lead time, and shipping options within 24 business hours
- Order Confirmation — Issue PO or confirm via online checkout; proforma invoice issued for T/T wire transfer or credit card payment
- Quality Hold — Units reserved and pre-shipment tested upon order confirmation
- Shipment — Dispatched via DHL Express / FedEx International Priority with full tracking; typical transit 3–7 business days worldwide
- After-Sales — Technical support available for installation verification and amplifier parameter setup
Technical FAQ
Q: What is the difference between USAHEM-01-TL31 and USAHEM-01-TL41?
A: Both are 100 W Σ-II frame motors. The TL31 suffix denotes a straight shaft with standard incremental encoder (2,000 P/R); TL41 typically indicates a different shaft or connector configuration. Always verify the amplifier parameter Pn002 and encoder cable pinout before substituting one for the other.
Q: Which YASKAWA amplifier is compatible with this motor?
A: The USAHEM-01-TL31 is designed for use with SGDH-01AE and SGDS-01A amplifiers in the Σ-II series. It is not directly compatible with Σ-V or Σ-7 amplifiers without an adapter cable and parameter reconfiguration.
Q: Can this motor be used with a third-party servo drive?
A: Yes, with engineering effort. The motor’s electrical parameters (back-EMF constant, winding resistance/inductance) must be programmed into the third-party drive. Contact our technical team for motor data sheets to support drive commissioning.
Q: What is the lead time for USAHEM-01-TL31?
A: In-stock units ship within 2 business days. For larger quantities or special configurations, lead time is 2–4 weeks. Contact us for current stock status.
Q: Do you supply the matching encoder cable and power cable?
A: Yes. YASKAWA-compatible encoder cables (JZSP-CMP00-XX) and power cables (JZSP-B9P0XX) are available. Specify cable length when ordering.
Q: Is the motor suitable for vertical axis applications?
A: Yes, with a holding brake option. The standard USAHEM-01-TL31 does not include an integral brake. For vertical axes, specify the brake variant or install an external fail-safe brake on the load side.
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