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MR-J4W2-77B

The MR-J4W2-77B is a 7.7kW waterproof servo amplifier-motor set from Mitsubishi's MR-J4W Series, designed for harsh environment operation with IP67 protection. This integrated system combines a servo drive and HG-KR motor with 22-bit absolute encoder, delivering exceptional performance in wet/dusty conditions.

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TEL：400-887-3214
Mail：jilineasyyi@outlook.com
Q Q：615739355
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Key Specifications
Component Specification
Amplifier Model MR-J4W2-77B
Rated Output 7.7 kW
Peak Current 33 A
Motor Model HG-KR77BJ (included)
Motor Torque 36.7 N·m (rated) / 110 N·m (peak)
Encoder 22-bit absolute (multi-turn)
Protection Class IP67 (drive & motor)
Cooling Method Natural convection (sealed)
Communication SSCNET III/H (fiber optic)
Ambient Temp. 0°C to +40°C (non-freezing)
Weight Drive: 4.5 kg / Motor: 22 kg
System Features
✔ Complete Waterproofing – No external enclosure required
✔ Corrosion Resistance – Stainless steel screws & special coating
✔ High-Precision – 0.00004° encoder resolution
✔ Vibration Suppression – Adaptive filter with mechanical analysis
✔ Safety Compliant – STO (Safe Torque Off) SIL3/PL e