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Kollmorgen AKM22E-ANCNR-00

Product Brief

Small-frame low-inertia high-speed AC permanent magnet synchronous servo motor matching global 480VAC high-voltage industrial power grids; ANCNR suffix integrates high-resolution Sine/Cos analog encoder and 24VDC spring-applied holding brake, compatible with all AKD-P high-voltage servo drives for ultra-smooth low-speed precision motion control.

Detailed content

Technical & Performance Specifications

  • Stator Winding Rated Voltage: 480 VAC three-phase high-voltage industrial power grid matching
  • Continuous Rated Stall Torque: 1.8 Nm
  • Peak Overload Torque: 5.4 Nm (300% short-time overload capacity, max 8s continuous overload)
  • Max Rated Continuous Rotational Speed: 8000 RPM
  • Frame Size: AKM22 small compact frame, square front flange dimension 70 mm
  • Suffix ANCNR Hardware Definition:

    A = Standard 480VAC high-voltage stator winding

    N = Single cable power + encoder combined connector

    CN = High-resolution Sine/Cos analog incremental rotary encoder

    R = 24VDC spring-applied electromagnetic holding brake

  • Shaft & Seal Configuration: Smooth solid output shaft, double-lip fluorine rubber IP65 shaft sealing ring
  • Insulation Class: Class F (Max winding operating temperature 155°C)
  • Environmental Protection Rating: Motor main housing IP65, front shaft output end IP67
  • Shaft Static Axial Allowable Load: 180 N continuous static load
  • Shaft Static Radial Allowable Load: 260 N continuous static load
  • Operating Ambient Temperature Range: -5°C ~ +40°C full rated torque output; 6% torque derate per 1000 m altitude above sea level
  • Storage Temperature Range: -40°C ~ +85°C

Functional Features

  1. Low-inertia NdFeB rare-earth permanent magnet rotor delivers ultra-fast acceleration and deceleration dynamic response for short-cycle high-speed positioning equipment
  2. High-resolution Sine/Cos analog encoder achieves thousands of internal signal subdivisions to eliminate low-speed torque ripple and vibration
  3. R suffix integrated 24VDC spring-applied holding brake locks motor shaft upon brake power de-energized for zero-backlash static load positioning
  4. Double-lip fluorine rubber shaft sealing ring blocks workshop dust, coolant mist and light liquid splashing to protect internal bearing assembly
  5. Class F high-temperature insulation supports sustained full-load high-speed operation without winding thermal degradation
  6. Single combined power + encoder cable connector reduces wiring complexity and cabinet cable space occupation
  7. Optimized low cogging electromagnetic design ensures ultra-smooth vibration-free rotation at sub-10 RPM ultra-low operating speeds

Material Composition

  • Motor Housing: Thin die-cast aluminum alloy with radial cooling fin structure, black hard anodic anti-corrosion coating
  • Rotor Assembly: Stacked silicon steel core embedded with sintered NdFeB rare-earth permanent magnet rings
  • Stator Winding: Class F high-temperature enameled copper wire with vacuum epoxy impregnation insulation treatment
  • Output Shaft: 4340 quenched and tempered alloy steel shaft with surface wear hardening polishing treatment
  • Bearing Set: Double sealed light-duty angular contact ball bearings filled with high-temperature synthetic grease
  • Feedback Unit: Hermetically sealed metal alloy Sine/Cos analog encoder housing mounted on motor rear end cap
  • Brake Assembly: Cast aluminum alloy brake shell, wear-resistant metal friction disc, copper electromagnetic coil spring compression structure

Structural Characteristics

  1. Compact 70 mm square front flange mounting layout with four symmetrical fixing bolt holes for miniature automation fixture installation
  2. Full radial external cooling fin housing for passive natural convection heat dissipation during continuous high-speed operation
  3. Rear end cap fully enclosed encoder and brake compartment isolated from motor main cavity to prevent metal chip and dust contamination
  4. Single combined quick-disconnect connector on motor side wall integrating three-phase power output and analog encoder feedback signal pins
  5. Front double-lip fluorine rubber shaft sealing ring installed at shaft output end to upgrade environmental protection performance
  6. Standard smooth solid output shaft compatible with clamp-type elastic couplings and timing belt pulleys

Working Principle

  1. AKD-P series 480VAC high-voltage servo drive outputs three-phase sinusoidal variable-frequency AC current to motor stator winding coils
  2. Rotating electromagnetic field generated by stator windings interacts with rotor embedded NdFeB permanent magnet ring to produce continuous high-dynamic rotational torque output
  3. Rear-mounted high-resolution Sine/Cos analog encoder outputs orthogonal sine and cosine analog voltage signals corresponding to real-time rotor angular position, transmits feedback data back to matched AKD servo drive
  4. Servo drive subdivides analog sine/cosine signals to achieve ultra-high positioning resolution, executes triple closed-loop torque/velocity/position control algorithms for vibration-free precision motion
  5. When 24VDC brake release power supply is disconnected, built-in compression spring pushes brake friction disc to lock output shaft; energized brake coil pulls friction disc away to release free motor rotation

Advantage Highlights

  1. Ultra-low rotor inertia supports 8000 RPM maximum high-speed operation for short-cycle rapid positioning automation equipment
  2. Sine/Cos analog encoder enables ultra-fine signal subdivision to eliminate low-speed torque ripple, ideal for optical and semiconductor precision positioning applications
  3. Integrated spring holding brake maintains static positioning accuracy without continuous power draw, cutting standby energy consumption
  4. IP65 full housing + IP67 front shaft sealing adapts to light coolant mist and dusty workshop production environments
  5. Single combined power/encoder cable connector reduces wiring material cost and installation labor time
  6. Native plug-and-play compatibility with all AKD-P 480VAC high-voltage servo drives for automatic motor parameter identification and one-click load auto-tuning

Applicable Industries

Optical lens inspection rotary positioning stages, semiconductor wafer micro-transfer automation, ultra-precision laser engraving equipment, high-speed electronic component packaging machinery, miniature medical diagnostic positioning actuators, laboratory micro-displacement test equipment

Installation Requirements

  1. Mount motor via full-surface contact of 70 mm square front flange with rigid miniature metal fixture, evenly tighten four fixing bolts to specified torque value
  2. Install lightweight elastic clamp coupling between motor output shaft and mechanical load to absorb high-speed acceleration shock and eliminate radial bearing overload stress
  3. Reserve minimum 40 mm rear clearance for encoder and brake wiring harness routing and heat dissipation airflow circulation
  4. Use original Kollmorgen single combined shielded servo cable for power and analog encoder signal transmission with single-point shield grounding at cabinet earth bar
  5. Avoid mounting motor in direct coolant spray zones; install external lightweight plastic splash guard if operating near cutting fluid sources
  6. Ensure mounting fixture structural rigidity; thin flexible mounting plates induce resonance during 6000–8000 RPM high-speed operation

Usage Precautions

  1. Limit continuous 300% peak overload operation duration strictly under 8 seconds; prolonged high overload causes permanent demagnetization of rotor NdFeB rare-earth magnets
  2. Do not disassemble rear encoder housing on-site; factory calibrated encoder signal offset data is lost after disassembly, requiring factory recalibration
  3. Clean motor housing cooling fin dust accumulation every 3 months in metal processing workshops to prevent chip blockage of heat dissipation airflow
  4. Deploy forced air auxiliary cooling fan for continuous full-load operation at ambient temperature above 40°C with 10% continuous torque output derate
  5. Avoid axial impact shock to motor output shaft; impact force damages rear internal analog encoder sensing components

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