Mitsubishi HG-SN102J-S100 – High-Inertia AC Servo Motor | MELSERVO-J4 Series
Engineering Background
The HG-SN series represents Mitsubishi Electric’s high-inertia servo motor lineup, purpose-engineered for demanding motion control applications where load inertia mismatch is a critical design constraint. Paired exclusively with the MR-J4 servo amplifier family, these motors form the backbone of Mitsubishi’s fourth-generation MELSERVO platform — a system trusted in precision manufacturing across automotive, semiconductor, and heavy-duty machine tool sectors worldwide.
Product Positioning
The HG-SN102J-S100 is a 1 kW, 3000 rpm AC servo motor with a high-inertia rotor design, making it the preferred choice for applications with large-inertia loads such as rotary tables, conveyors, and winding machines. The -S100 suffix denotes a straight shaft with key configuration, optimized for direct coupling to mechanical loads. This unit is sourced, inspected, and dispatched by Konmask.com — a specialist distributor of industrial automation components serving global procurement engineers.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | HG-SN102J-S100 |
| Manufacturer | Mitsubishi Electric |
| Series / Platform | MELSERVO-J4 / HG-SN (High-Inertia) |
| Rated Output Power | 1.0 kW (1000 W) |
| Rated Speed | 3000 rpm |
| Rated Torque | 3.18 N·m |
| Peak Torque | 9.55 N·m |
| Rotor Moment of Inertia | 2.39 × 10⁻³ kg·m² |
| Encoder Type | 22-bit absolute encoder (built-in battery-less) |
| Encoder Resolution | 4,194,304 pulses/rev |
| Power Supply Voltage | 3-phase / single-phase 200–240 VAC |
| Insulation Class | Class F (155°C) |
| Protection Rating | IP65 (shaft-through seal) |
| Shaft Configuration | Straight shaft with key (-S100) |
| Frame Size | 130 mm sq. flange |
| Weight | Approx. 4.5 kg |
| Compatible Amplifier | MR-J4-10A / MR-J4-10B / MR-J4W series |
| Operating Temperature | 0°C to +40°C (non-condensing) |
| Storage Temperature | -15°C to +70°C |
| Vibration Resistance | 49 m/s² (X, Y, Z axes) |
| Country of Origin | Japan |
| HS Code (Reference) | 8501.52 |
Proven Application Environments
- CNC Machine Tools – Spindle orientation and rotary axis control requiring high inertia tolerance
- Rotary Indexing Tables – Precise angular positioning with heavy fixture loads
- Winding & Unwinding Machines – Tension control with variable inertia loads
- Conveyor & Transfer Systems – High-cycle start/stop with consistent torque delivery
- Injection Molding Machines – Clamp and ejector axis control
- Semiconductor Handling Equipment – Smooth, vibration-free motion for wafer transport
Engineering Advantages
- High-Inertia Rotor Design – Inertia ratio tolerance up to 100:1, eliminating the need for mechanical flywheels in most applications
- Battery-Less Absolute Encoder – 22-bit resolution with no battery maintenance; retains position data via capacitor backup during power-off
- Vibration Suppression (Advanced) – MR-J4 adaptive filter suppresses mechanical resonance up to 4500 Hz
- IP65 Sealing – Full dust-tight and water-jet protection; suitable for wash-down and coolant-splash environments
- Plug-and-Play with MR-J4 – Auto-tuning, one-touch tuning, and drive recorder functions reduce commissioning time significantly
- Energy Efficiency – Regenerative energy recovery via MR-J4 amplifier reduces net energy consumption by up to 30% vs. previous generations
System Architecture & Signal Flow
The HG-SN102J-S100 integrates into a standard MELSERVO-J4 closed-loop architecture as follows:
- Controller Layer: Mitsubishi MELSEC iQ-R / iQ-F PLC or CNC C70/C80 → SSCNET III/H fiber optic bus (150 Mbps)
- Amplifier Layer: MR-J4-10A/B servo amplifier → receives position/speed/torque commands; manages current loop at 62.5 µs cycle
- Motor Layer: HG-SN102J-S100 → 22-bit encoder feedback to amplifier; power cable (U/V/W + PE) from amplifier output
- Feedback Path: Absolute position retained without battery; position data transmitted via encoder cable (MR-J3ENCBL series recommended)
Sourcing & Quality Verification
- Origin: Genuine Mitsubishi Electric product, manufactured in Japan
- Traceability: Each unit ships with original manufacturer label, date code, and serial number
- Inspection: Pre-shipment functional check — encoder communication, insulation resistance (≥100 MΩ @ 500 VDC), and shaft runout verification
- Packaging: Original OEM packaging or equivalent anti-static foam-lined export carton
- Warranty: 12-month Konmask warranty against manufacturing defects; DOA replacement within 7 days
Procurement Process
- Confirm Part Number – Verify HG-SN102J-S100 against your BOM or Mitsubishi selection guide (SH-030098)
- Request Quote – Contact [email protected] with quantity, delivery port, and Incoterms requirement
- Order Confirmation – Pro-forma invoice issued within 1 business day; payment via T/T, PayPal, or credit card
- Lead Time – In-stock units ship within 3–5 business days; EXW Xiamen or FOB Xiamen available
- Documentation – Commercial invoice, packing list, CO (if required), and test report provided with shipment
Technical FAQ
Q: Is the HG-SN102J-S100 compatible with MR-J3 amplifiers?
A: No. The HG-SN series uses a 22-bit battery-less absolute encoder that is only compatible with MR-J4 and MR-J5 series amplifiers. MR-J3 uses a different encoder protocol.
Q: What is the difference between HG-SN102J and HG-SN102J-S100?
A: The -S100 suffix specifies a straight shaft with key. The base model HG-SN102J has a straight shaft without key. Confirm your coupling or pulley bore requirement before ordering.
Q: Can this motor operate in a vertical axis application?
A: Yes, with appropriate brake option. The HG-SN102J-S100 does not include a built-in brake. For vertical axes, specify the HG-SN102JB-S100 (with electromagnetic brake) to prevent load drop on power-off.
Q: What encoder cable length is supported?
A: Standard MR-J3ENCBL series cables support up to 50 m. For longer runs, use the MR-J3ENCBL□M-A2-L long-distance cable with MR-EN2ATH encoder relay unit.
Q: Is CE / UL certification available?
A: Yes. The HG-SN series carries CE marking (EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU) and UL recognition. Certification documents available upon request.
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