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Kollmorgen AKM33H-ACMNR-0

Product Description & Working Principle:​
A 3-phase permanent-magnet (NdFeB) synchronous AC servo motor with very low cogging torque. The rotor magnetic field interacts with stator windings energized by a servo drive to produce precise torque/speed. Rotor position is sensed by an integral resolver for commutation and closed-loop control.
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Electrical & Mechanical Parameters (typical @ 320 VDC bus, 100 °C rise):
  • Rated (Continuous) Torque (Stall):​ 2.88 Nm
  • Rated (Continuous) Current:​ 5.62 A RMS
  • Peak Torque:​ 10.22 Nm
  • Peak Current:​ 22.5 A RMS (short duration)
  • Maximum Speed:​ 8000 rpm
  • Rated Speed @ Nominal Power:​ varies with load; typical no-load max 8000 rpm
  • Winding Voltage (DC Bus Nom.):​ 320 VDC (suitable for 230 VAC 3-phase driven drives)
  • Number of Poles:​ 8 poles (4 pole pairs)
  • Torque Constant (Kt):​ ~0.51 Nm/A (RMS)
  • Back-EMF Constant (Ke):​ ~34 V/krpm (line-line)
  • Rotor Inertia:​ ~0.85 × 10⁻⁴ kg·m² (0.85 kg·cm²)
Physical & Construction:
  • Shaft:​ 14 mm dia., smooth (no keyway) — “N” in ACMNR-0 denotes smooth shaft
  • Flange:​ IEC metric, 4 × M6 bolts on 75 mm PCD (pilot Ø60 mm)
  • Motor Length (body):​ approx. 106 mm (excl. shaft)
  • Weight:​ approx. 2.9 kg
  • Housing Material:​ Aluminum with black epoxy coating
  • Insulation Class:​ H (180 °C)
  • Feedback Device:​ 2-pole resolver (accuracy ±8 arc-min), mounted internally
  • Temperature Sensor:​ PTC thermistor (KTY84 or equivalent)
  • Brake:​ None (“0” = no holding brake)
Connectors:
  • Power: M23 angled SpeedTec™ connector, rotatable
  • Feedback: M23 angled SpeedTec™ connector, rotatable
Environmental:
  • Protection:​ IP54 standard (IP65 with shaft seal option)
  • Ambient Temp.:​ 0 to +40 °C (motor surface); winding -25 to +155 °C
  • Cooling:​ Natural convection / frame conduction
Installation & Notes:
  • Align coupling carefully to avoid side loads > specified radial/axial limits (typically axial ≤ 20 N, radial at shaft end ≤ 80 N for this size).
  • Use correct pinout for resolver and power connectors per AKM manual.
  • Ensure drive is configured for resolver feedback and correct motor parameters loaded (WorkBench auto-identifies AKM motors).
  • Do not paint or insulate motor mounting surface — needed for frame grounding.
Applications:​ Pick-and-place, labeling, converting equipment, semiconductor handlers, small CNC axis.

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