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Kollmorgen AKM21C-ANM2C-0

Basic Identification

  • Full Model Number: AKM21C-ANM2C-0
  • Brand: Kollmorgen
  • Product Line Series: AKM Small Frame Permanent Magnet Synchronous Servo Motor
  • Product Category: Brushless AC Servo Rotary Motor
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Detailed content

Product Overview

AKM21C-ANM2C-0 belongs to AKM 21 frame micro high-dynamic servo motor, optimized for ultra-small footprint, low rotor inertia, and rapid acceleration/deceleration response. Designed to pair with AKD series servo drives for high-precision compact automation axes, equipped with multi-turn absolute encoder feedback and standard IP65 shaft sealing structure, supporting continuous high-speed operation up to 8000 RPM.

Technical Performance Parameters

  1. Electrical Rated Specs (100°C Winding Temperature Rise)
    • Continuous Stall Torque: 0.48 N·m
    • Peak Torque (3x overload): 1.47 N·m
    • Continuous Rated Current: 1.58 Arms RMS
    • Peak Current: 6.3 Arms RMS
    • Maximum Allowable DC Bus Voltage: 320 VDC
    • Rated Mechanical Power Output: 320W
    • Maximum Mechanical Speed: 8000 RPM
  2. Mechanical Rotor Specs
    • Rotor Moment of Inertia: 0.000028 kg·m²
    • Shaft Standard: Smooth solid shaft, no keyway, 8mm shaft diameter
    • Radial Shaft Load (Continuous): 90N; Axial Shaft Load (Continuous): 45N
  3. Feedback Code Definition (ANM2C Suffix)

    Multi-turn SFD smart absolute feedback, single cable power+feedback integrated wiring

  4. Mechanical Mount Standard (C Suffix)

    IEC standard 40mm square flange mounting

Functional Feature Set

  1. Ultra-low cogging torque magnetic circuit design (<1% rated torque ripple) for vibration-free micro-positioning
  2. Single-cable SFD feedback architecture reduces on-site wiring quantity by 50%
  3. Class F high-temperature resistant enamel winding wire, long service life under continuous high-load operation
  4. Optional integrated 24VDC holding brake (this model non-brake variant, suffix 0 = no brake)
  5. Standard IP65 shaft sealing; IP67 full motor housing optional via custom suffix
  6. Compatible with all AKD digital servo drives for one-click auto-tuning and motor parameter auto-recognition

Material & Structural Composition

  • Stator Housing: Die-cast aluminum alloy with black hard anodized anti-corrosion coating
  • Rotor Core: Silicon steel laminated stack with high-energy neodymium iron boron permanent magnets
  • Shaft Material: 4140 alloy steel, precision grinding surface treatment
  • Bearing: Double sealed deep-groove ball bearing, industrial high-temperature lithium grease lubrication
  • Terminal Connector: Rotatable IP65 metal circular connector, PA66 flame-retardant insulation
  • Weight: 0.78kg total motor mass

Working Principle

Three-phase sinusoidal PWM current output from paired AKD drive energizes stator windings to generate rotating magnetic field. High-performance permanent magnet rotor follows rotating field synchronously. SFD absolute encoder continuously transmits real-time rotor angle, speed, and multi-turn position data back to drive for closed-loop position control. Optimized thin lamination silicon steel minimizes eddy current loss, enabling ultra-fast acceleration response for short-stroke high-cycle automation cycles.

Competitive Advantages

  1. Class-leading torque density in 40mm micro frame size; delivers higher output torque than competitor motors with identical mounting dimensions
  2. Minimal rotor inertia achieves sub-10ms full acceleration from standstill to rated speed
  3. Single-cable feedback drastically reduces cabinet wiring cost and assembly labor time
  4. Over 500,000 standard configurable variants to match any mechanical integration requirement without custom machining
  5. Low noise operation (<52dB at rated speed) for medical and laboratory quiet environment applications

Applicable Industry Segments

Medical diagnostic equipment, laboratory automation stages, desktop CNC engraving machines, electronic component pick-and-place robots, micro packaging equipment, optical inspection positioning stages, semiconductor small transfer axes.

Installation Technical Requirements

  1. Flange mounting surface flatness tolerance ≤0.02mm; four mounting screws torque tightened to 1.8 N·m evenly
  2. Shaft coupling coaxial alignment error ≤0.05mm radial offset to eliminate bearing premature wear
  3. Ambient operating temperature: -20°C to +40°C; storage temperature -25°C to +70°C
  4. Maximum continuous vibration exposure limit: ≤0.3g; isolate from punch press high-vibration equipment
  5. Cable bending radius minimum 8× cable outer diameter; avoid repeated sharp bending of single-cable assembly
  6. Do not apply axial impact force directly to motor shaft during mechanical assembly

Operation & Maintenance Rules

  1. No lubrication maintenance required for bearings; design service life 20,000 continuous operating hours under rated load
  2. Prevent liquid, metal dust, and chemical vapor intrusion into connector interface
  3. If motor overheat fault triggers, inspect load inertia matching and check for mechanical binding of driven load
  4. Disconnect drive power before plugging/unplugging motor feedback/power connector to avoid encoder circuit burnout
  5. Annual inspection of connector cable sheath abrasion; replace damaged cables immediately to prevent short-circuit failure

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