Product Short Description
Product Name: Mitsubishi CNC Meldas HC Series AC Servo Motor
Product Introduction: The HC703BS-E51 is a high-power AC servo motor from Mitsubishi’s CNC Meldas HC series, featuring a built-in electromagnetic brake and a high-resolution incremental encoder for precision CNC machine tool applications.
Technical Specifications (HC703 base model with -E51 detector and -BS brake):
Description
- Motor Type: HC Series AC Servo Motor
- Output Capacity: 7.0 kW
- Rated Speed: 3000 r/min
- Rated Current: 30.5 A
- Stall Current: 67.2 A
- Rated Torque: 22.3 N·m
- Stall Torque: 49.0 N·m
- Max. Torque: 105 N·m
- Rated Output Power: 7.0 kW
- Armature Resistance (phase, 20°C): 0.025 Ω
- Armature Inductance (20° between wires): 0.9 mH
- Torque Constant: 7.9 kgf·cm/A (±10%)
- Inductive Voltage Constant: 46.8 mV/rpm (20°C, ±10%)
- Motor Inertia (J): 170 kg·cm²
- Static Friction Torque: 0.50 N·m
- Magnetic Brake: With (BS = Brake, Straight shaft)
- Shaft Type: Straight
- Detector: Incremental (INC), 1,000,000 pulses/revolution (E51)
- Protection Type: IP65 (IP67 structure available)
- Armature Insulation Class: Class F
- Weight: 32 kg (without brake) / 38 kg (with brake)
Functional Features: Fully closed, self-cooling structure; high overload capacity; instantaneous angle acceleration of 6566 rad/sec²; electrical time constant 15.4 msec; mechanical time constant 2.0 msec; recommended motor shaft conversion load inertia rate 5 times or less of motor inertia.
Application Scenarios: High-power CNC machine tools, machining centres, large-axis precision positioning systems, and industrial automation requiring high torque at 3000 r/min.
Installation Requirements: Use hexagon socket head bolts for installation; friction coupling (spun ring, etc.) to connect with load; 4-φ13.5 installation holes; overall length (L) 345 mm for HC703BS variant; ensure proper alignment with load to avoid mechanical stress.
Usage Notes: The max. current and max. torque values are achieved when combined with the appropriate amplifier; ensure amplifier compatibility; maintain armature coil temperature below 100 °C upper limit; follow environmental conditions per section 3-1-1 of the manual.
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