Kollmorgen AKM42E-EKGNR-01

Product Overview

AKM42E-EKGNR-01 is a medium-frame industrial servo motor engineered for high dynamic positioning, rapid acceleration, and continuous precision motion control. It integrates high-energy rare-earth permanent magnet rotor, F-class insulated windings, and a 16-bit absolute digital encoder, delivering consistent torque output under variable load conditions for automated machinery.
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Description

Core Technical Specifications

  1. Frame Flange Dimension: 84 mm × 84 mm NEMA standard mounting flange
  2. Rated Power Output (640 V DC Bus): 1.14 kW (1.53 HP)
  3. Continuous Rated Torque: 3.72 N·m
  4. Peak Stall Torque: 11.16 N·m (300% overload for 3 seconds maximum)
  5. Rated Operating Speed: 4000 RPM
  6. Maximum Mechanical Speed: 8000 RPM
  7. Bus Voltage Compatibility: 75 V DC, 320 V DC, 560 V DC, 640 V DC
  8. Continuous Rated Armature Current: 2.74 A
  9. Feedback Encoder: 16-bit single-turn absolute HIPERFACE DSL digital encoder
  10. Insulation Class: F (155 °C maximum winding temperature)
  11. Ingress Protection Rating: IP67 (shaft seal, housing, connector mating surfaces)
  12. Cooling Method: Natural convection air cooling (no auxiliary fan required)
  13. Shaft Configuration: Smooth solid shaft with standard keyway, closed shaft seal
  14. Connector Type: Dual M23 straight circular metal connectors (power + feedback separated)
  15. Net Weight: 2.8 kg
  16. Operating Ambient Temperature: -20 °C to +40 °C (continuous rated operation)
  17. Certifications: UL 508, CE, cURus

Functional Features

  1. Low-inertia rotor design enabling ultra-fast acceleration/deceleration cycle response
  2. Single-cable HIPERFACE DSL feedback architecture reduces wiring quantity by 50%
  3. Built-in temperature thermistor embedded within stator windings for real-time overheat protection
  4. Optional holding brake mechanical lock compatible with identical mounting footprint
  5. Fully configurable electronic commutation matching all Kollmorgen AKD servo drive platforms
  6. Built-in EMC shielding to suppress radiated and conducted electromagnetic noise

Working Principle

Three-phase alternating current from servo drive generates rotating magnetic field within stator windings. Rare-earth permanent magnet rotor synchronously follows the rotating field to produce continuous rotational torque. The integrated absolute encoder outputs real-time rotor position and speed data to the servo drive for closed-loop position, velocity, and current triple-loop control. Embedded thermal sensors transmit winding temperature signals to trigger automatic derating or fault shutdown upon overtemperature.

Material & Structural Characteristics

  • Stator core: Silicon steel laminated low-loss electromagnetic sheet
  • Rotor magnet: Sintered neodymium rare-earth permanent magnet
  • Motor housing: Die-cast aluminum alloy with black hard anodized anti-corrosion coating
  • Shaft material: High-strength carbon steel with surface quenching anti-wear treatment
  • Sealing components: Fluorosilicone rubber oil-resistant IP67 shaft seals
  • Terminal connectors: Nickel-plated metal M23 circular connectors with integral cable strain relief

Core Advantages & Highlights

  1. Class-leading torque density within 84 mm frame size, reducing machine footprint
  2. IP67 full-body sealing permits direct installation in washdown manufacturing environments
  3. 16-bit absolute encoder eliminates homing sequence required for incremental encoder systems
  4. F-class winding insulation extends service life under high-duty-cycle continuous operation
  5. Full mechanical interchangeability with all AKM42 frame variant models

Applicable Industries

CNC machine tools, packaging automation, textile machinery, semiconductor wafer handling equipment, robotics joint actuators, printing presses, food processing automated lines, laser cutting motion platforms

Installation Mandatory Requirements

  1. Mount flange surface flatness tolerance ≤0.02 mm; use flat mounting gasket to eliminate axial vibration
  2. Shaft coupling radial runout ≤0.05 mm to prevent bearing premature wear
  3. Maintain minimum 10 mm clearance around motor housing for natural convection heat dissipation
  4. Torque M23 connector locking ring to specified 3 N·m tightening torque to retain IP67 sealing integrity
  5. Ground motor housing via dedicated PE protective earth wire to suppress EMC interference

Operation & Maintenance Precautions

  1. Do not exceed 3-second peak overload torque duty cycle to avoid permanent magnet demagnetization
  2. Prevent chemical cleaning solvents from contacting shaft seal and connector rubber components
  3. Perform bearing lubrication maintenance every 8,000 operating hours under continuous high-speed duty
  4. Avoid prolonged storage at temperatures below -25 °C which hardens rubber sealing elements
  5. Disconnect drive power before detaching M23 connectors to prevent encoder circuit damage
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