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The Mitsubishi HG-H903 Servo Motor is a 9.0 kW high-capacity AC servo motor from the HG-H series, designed for large CNC machines, high-load axes, and heavy industrial automation systems requiring very high torque and precision.
Key Specifications (HG-H903)
Specification
Value
Series
HG-H Series
Rated Output
9.0 kW
Rated Torque
28.6 N·m
Maximum Torque
85.8 N·m
Rated Speed
3000 rpm
Maximum Speed
5000 rpm
Rated Current
41 A
Maximum Current
134 A
Encoder
22-bit absolute encoder (≈ 4,194,304 pulses/rev)
Protection
IP67 (shaft excluded)
Frame Type
Large-frame industrial servo motor
Insulation Class
Class F
Cooling
Fully enclosed self-cooled
Compatible Drives
Mitsubishi MDS-EH / MDS-E series CNC servo amplifiers
(Source: Mitsubishi Electric HG-JR/HG series servo motor specification data)
Features
Very high power output (9 kW class) for heavy-duty CNC applications
High torque capability for cutting, milling, and large-axis motion
22-bit high-resolution encoder for extremely precise positioning
Strong overload capacity for demanding machining cycles
IP67-rated protection for harsh industrial environments
Optimized for Mitsubishi CNC control systems (MDS drives)
Typical Applications
Large CNC machining centers (heavy X/Y/Z axes)
High-power milling and turning machines
Industrial robotics with heavy payloads
Press machines and forming systems
Large-scale material handling and automation lines
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