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The Mitsubishi HQ-H903 Servo Motor is a 9.0 kW high-power AC servo motor from the HQ-H series, designed for heavy-duty CNC machining centers and large industrial automation systems requiring very high torque, rigidity, and stable cutting performance.
Key Specifications (HQ-H903)
Specification
Value
Series
HQ-H Series
Rated Output
9.0 kW
Rated Torque
28.7 N·m
Maximum Torque
170 N·m
Stall Torque
70 N·m
Rated Speed
3000 rpm
Maximum Speed
3000 rpm
Rated Current
14.7 A
Maximum Current
92.7 A
Encoder
High-resolution absolute encoder (up to 67,108,864 pulses/rev depending on variant)
Frame Size
220 SQ class
Protection
IP67 (shaft excluded)
Cooling
Self-cooled industrial design
Compatible Drives
Mitsubishi MDS-E / MDS-EH series servo amplifiers
Features
High-power 9 kW output for large machine tool axes
Strong torque capacity for heavy cutting and rapid acceleration loads
Very high-resolution encoder for precision positioning in CNC systems
IP67 protection for harsh industrial environments
Designed for Mitsubishi CNC drive systems (MDS series integration)
Stable performance at high inertia loads
Typical Applications
Large CNC machining centers
Heavy-duty milling and turning machines
Industrial robots with high payload
Press machines and metal forming systems
Large automated transfer and handling systems
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