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HF-S81MK-S2

The HF-S81MK-S2 is a high-performance, medium-capacity AC servo motor from Mitsubishi's HF-S series, designed for industrial automation applications requiring precise motion control and high torque output. With an 800W (0.8kW) rating, this motor delivers exceptional dynamic response and smooth operation for demanding positioning tasks.

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Key Specifications
Mechanical Specifications:

Frame Size: 80mm square flange

Shaft Type: Keyed shaft (standard)

Mounting: Flange mounting

Protection Class: IP65 (dust-proof & oil-resistant)

Cooling Method: Natural cooling (fanless)

Electrical Performance:

Rated Output: 800W (0.8kW)

Rated Torque: 2.39Nm

Max. Torque: 7.16Nm

Rated Speed: 3000rpm

Max. Speed: 5000rpm

Encoder: 17-bit high-resolution (131,072 pulses/rev)

Insulation Class: Class F

Thermal Class: 155°C

3. Technical Features
✔ Optimized Torque Characteristics - Flat torque curve up to 3000rpm
✔ Precision Control - 17-bit encoder for accurate positioning
✔ Vibration Suppression - Smooth operation at all speeds
✔ Robust Construction - Heavy-duty bearings for industrial use
✔ Maintenance-Free - Brushless design with long service life

4. Compatible Drives
Servo Amplifiers:

MR-J4-70A/B (for 800W motors)

MR-JE-70A (economy series)

Control Modes:

Position control

Speed control

Torque control

5. Typical Applications
CNC machine tools

Industrial robots

Material handling systems

Packaging machinery

Printing equipment

Semiconductor manufacturing