Industrial Motion Control Solution – Mitsubishi HG-KN73BJ-S100 | MR-J4 MELSERVO Series
Where This Product Is Used
The Mitsubishi HG-KN73BJ-S100 is a 750W AC servo motor from the MELSERVO-J4 (MR-J4) HG-KN Series, engineered for precision motion control in demanding industrial environments. Engineers and system integrators specify this model across the following application sectors:
- CNC Machine Tools – Axis feed drives on milling centers, lathes, and grinding machines requiring sub-micron positioning repeatability.
- Robotic Assembly Lines – Joint actuation in SCARA and articulated robots where compact form factor and high torque density are critical.
- Packaging Machinery – High-speed pick-and-place, form-fill-seal, and cartoning lines demanding synchronous multi-axis coordination.
- Semiconductor & Electronics Manufacturing – Wafer handling, PCB drilling, and SMT placement equipment requiring ultra-low vibration and clean-room compatibility.
- Printing & Converting Equipment – Register control and tension management in web-fed offset and flexographic presses.
- Material Handling & Conveyors – Precision indexing tables, AGV drive units, and automated storage/retrieval systems (AS/RS).
- Textile & Winding Machines – Spindle drives and traverse mechanisms requiring constant tension control.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | HG-KN73BJ-S100 |
| Series | MELSERVO-J4 / HG-KN |
| Rated Output Power | 750 W |
| Rated Torque | 2.39 N·m |
| Rated Speed | 3,000 rpm |
| Maximum Speed | 6,000 rpm |
| Encoder Type | 22-bit Absolute Encoder (built-in battery-less) |
| Encoder Resolution | 4,194,304 pulses/rev |
| Voltage | 3-phase / Single-phase 200–240 VAC |
| Inertia Moment (Rotor) | 0.277 × 10⁻⁴ kg·m² |
| Frame Size | 80 mm square flange |
| Shaft Type | Straight shaft with key (S100 suffix) |
| IP Rating | IP65 (shaft seal standard) |
| Ambient Temperature | 0 – 40 °C (operating) |
| Compatible Drive | MR-J4-70B / MR-J4-70A / MR-J4-70GF |
| Weight (approx.) | 2.5 kg |
| Country of Origin | Japan |
Why Engineers Specify This Model
- Battery-less Absolute Encoder – Eliminates encoder battery maintenance and replacement costs; retains absolute position through power cycles without a backup battery.
- High Resolution (22-bit) – 4.19 million pulses per revolution delivers exceptional positioning accuracy, reducing mechanical compensation requirements.
- Compact HG-KN Frame – 80 mm flange footprint with high power density enables integration into space-constrained machine designs.
- Plug-and-Play with MR-J4 Drives – Auto-tuning, vibration suppression, and one-touch tuning features of the MR-J4 amplifier are fully exploited with this motor.
- S100 Shaft Suffix – Straight shaft with keyway provides secure coupling to gearboxes, pulleys, and couplings without shaft slippage under dynamic loads.
- IP65 Sealing – Suitable for environments with coolant mist, dust, and wash-down exposure common in machining and food processing applications.
Complete System Bill of Materials
For a fully operational servo axis using the HG-KN73BJ-S100, the following components are typically required:
- Servo Amplifier: MR-J4-70B (SSCNET III/H) or MR-J4-70A (pulse/analog)
- Servo Cable (Power): MR-PWS1CBL03M-A2-L (0.3 m) or equivalent length
- Encoder Cable: MR-J3ENCBL2M-A2-L or MR-ENCBL2M-A2-L
- Regenerative Resistor: MR-RB032 (if duty cycle demands)
- Controller: Mitsubishi MELSEC iQ-R / iQ-F series PLC with Motion CPU (e.g., RD77MS4)
- 24 VDC Power Supply: For control circuit and I/O
- Circuit Breaker / EMC Filter: Per local electrical code requirements
Compliance & Industry Standards
- CE Marking – EMC Directive 2014/30/EU & Low Voltage Directive 2014/35/EU
- UL Listed – UL 1004 (Rotating Electrical Machines)
- RoHS Compliant – Restriction of Hazardous Substances Directive 2011/65/EU
- ISO 9001:2015 – Manufactured under Mitsubishi Electric’s certified quality management system
- SEMI S2 / S8 – Suitable for semiconductor equipment safety requirements
Quality Assurance & Sourcing
All units supplied by Konmask.com undergo the following verification process before dispatch:
- Visual inspection for physical damage, label integrity, and connector condition
- Serial number and date-code verification against manufacturer records
- Encoder communication check (where test equipment permits)
- Anti-static packaging with desiccant for moisture-sensitive components
- Traceability documentation available upon request (COO, test reports)
We source exclusively from authorized distributors and verified industrial surplus channels. Counterfeit-free guarantee backed by our sourcing policy.
How to Source This Part
To place an order or request a quotation for the Mitsubishi HG-KN73BJ-S100:
- Online: Add to cart directly on this page for in-stock units.
- RFQ / Bulk Orders: Email support@konmask.com with quantity, required delivery date, and destination country.
- Lead Time: In-stock units ship within 1–3 business days. Special-order units: 4–8 weeks (subject to manufacturer availability).
- Export: We ship globally. DDP/DAP Incoterms available. HS Code: 8501.52 for customs clearance.
- Phone / WhatsApp: +0086 19859288691
Application-Specific FAQ
Q: Is the HG-KN73BJ-S100 compatible with older MR-J3 amplifiers?
A: No. The HG-KN series uses the MR-J4 encoder interface. It is not backward-compatible with MR-J3 drives. For MR-J3 systems, specify the HG-KN73J instead.
Q: What does the “S100” suffix indicate?
A: The S100 suffix denotes a straight shaft with a keyway (key included). The standard model without suffix has a plain straight shaft. Specify S100 when using keyed couplings or pulleys.
Q: Can this motor be used in a vertical axis application?
A: Yes, with appropriate counterbalance or brake. The HG-KN73BJ-S100 does not include a built-in holding brake. For vertical axes, pair with the MR-J4-70B amplifier’s dynamic brake function or add an external brake module.
Q: What is the encoder battery backup requirement?
A: None. The 22-bit absolute encoder in the HG-KN73BJ-S100 is battery-less. Absolute position is retained through a capacitor-backed internal circuit, eliminating periodic battery replacement.
Q: Is this motor suitable for food & beverage or washdown environments?
A: The IP65 rating provides protection against dust ingress and low-pressure water jets, making it suitable for light washdown. For full washdown (IP67/IP69K), consult Mitsubishi’s HG-SN or HG-RN series with stainless shaft options.
Q: What communication protocol does the MR-J4-70B amplifier use?
A: SSCNET III/H (high-speed optical fiber network) at 150 Mbps, enabling synchronous multi-axis control with Mitsubishi Motion CPUs. The MR-J4-70A variant supports pulse train and analog command interfaces.
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