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Kollmorgen AKM73M-ACCNR-00
Product Name: AKM7 Series 188 mm Flange Brushless Servo Motor, Stack 3, M-Winding, Resolver, No Brake
Product Overview:
Housed permanent-magnet synchronous servo motor, 188 × 188 mm IEC square flange, mid-long stack, medium-voltage “M” winding for 400/480 VAC lines, 16-bit resolver feedback, keyed shaft, no holding brake.
Detailed content
Technical Specifications:
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Frame: AKM7 (188 mm)
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Stack: 3 (mid-long)
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Winding: M (400 V class, max bus 640 VDC)
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Stall Torque: 42 Nm
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Rated Torque: 26 Nm
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Rated Speed: 1940 rpm (400 V), 2220 rpm (480 V)
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Rated Power: ≈ 7.7 kW (640 VDC bus)
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Rotor Inertia: 0.00921 kg·m²
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Shaft: 38 mm diameter, keyway
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Feedback: Resolver (16-bit class), “R” in code
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Brake: None (“N”)
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Connectors: 2 × rotatable M23 (power + feedback)
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Ingress: IP65
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Insulation: Class F (155 °C), 100 °C winding rise
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Weight: ≈ 28 kg
Construction & Materials:
Laminated silicon-steel stator, epoxy-sealed copper windings, sintered NdFeB rotor magnets, deep-groove ball bearings both ends, aluminum end caps, steel flange, resolver on rear stub.
Working Principle:
3-phase stator field rotates synchronously with rotor permanent field; resolver feeds rotor angle to AKD/S700 for field-oriented control; torque proportional to q-axis current.
Features: Low cogging, high torque density, direct bolt-in to AKM7 mechanical footprint, resolver immune to noise.
Applications: CNC feed axes, press transfer, robot shoulder/elbow, large-format printer carriage, winder/unwinder.
Installation & Notes:
Support shaft only through coupling; never radial-load keyway beyond bearing spec. No brake → hold vertical load mechanically. Resolver alignment factory-set; do not disassemble rear cap.
