Kollmorgen AKM42E-EKGNR-01

Kollmorgen AKM42E-EKGNR-01

Product Introduction
The Kollmorgen AKM42E-EKGNR-01 is a high-performance synchronous brushless servo motor belonging to the globally renowned AKM series. As part of Kollmorgen’s flagship motion control product line, this motor is engineered to deliver exceptional torque density, smooth operation, and precise motion control for demanding industrial automation applications. The AKM series is optimized for seamless integration with Kollmorgen AKD servo drives, forming a complete high-performance motion control system. The AKM42E specifically represents the 42mm frame size with an “E” stack length designation

Request Quote
Category:

Description

Kollmorgen AKM42E-EKGNR-01

Technical Specifications

  • Brand: Kollmorgen (Regal Rexnord Group)
  • Model: AKM42E-EKGNR-01
  • Product Type: Synchronous Brushless Servo Motor
  • Series: AKM Series (1st Generation)
  • Frame Size: 42 mm
  • Rated Torque: 2.0 Nm
  • Rated Speed: 3000 rpm
  • Rated Power: 600 W
  • Shaft Diameter: 22 mm
  • Supply Voltage: 24-48V DC (low-voltage winding variant)
  • Power Consumption: ≤100W (standby/idle)
  • Dimensions: 110mm × 110mm × 110mm
  • Weight: 3 kg
  • Protection Rating: IP65 (with Teflon shaft seal option)
  • Insulation Class: Class F (155°C)
  • Ambient Temperature: -40°C to +40°C (standard); extended range available

Functional Features

  • High torque density design delivering 2.0 Nm continuous torque in a compact 42mm frame
  • Low cogging torque architecture ensuring exceptionally smooth motion at low speeds
  • EnDat 2.2 absolute encoder feedback (indicated by “G” in model code) providing high-resolution position data
  • Keyed shaft design (indicated by “K” in model code) preventing feedback device misalignment during maintenance
  • Open keyway shaft configuration (indicated by “N” in model code) for secure mechanical coupling
  • Standard international mounting flange (indicated by “A” in model code) compatible with global machinery standards
  • 24V DC brake option (indicated by “2” in model code) for vertical axis holding applications
  • IP65 environmental protection rating with Teflon shaft seal resisting dust and water ingress
  • Compatible with Kollmorgen AKD, S200, S300, and S600 series servo drives
  • Plug-and-play feedback system with electronic motor nameplate enabling automatic drive configuration
  • Global voltage winding options supporting 53V to 480V AC bus operations
  • Modular connector system with rotatable IP65-rated power and feedback connectors

Application Scenarios

  • Industrial Robotics: Joint actuation in articulated robots requiring precise torque and position control
  • CNC Machine Tools: Spindle drives, axis feeds, and tool changers in milling and turning centers
  • Packaging Machinery: High-speed filling, capping, labeling, and case packing operations
  • Printing and Converting: Web tension control, registration systems, and print cylinder drives
  • Food and Beverage Processing: sanitary-duty applications with IP65/IP67 washdown-rated variants
  • Semiconductor Manufacturing: Wafer handling robots, precision positioning stages, and inspection equipment
  • Medical Equipment: Surgical robots, diagnostic imaging systems, and laboratory automation
  • Textile Machinery: Yarn winding, weaving, and fabric handling systems
  • AGV/AMR Systems: Wheel drive and steering actuation in autonomous mobile robots

Performance Parameters

  • Continuous Torque Output: 2.0 Nm at rated speed
  • Peak Torque Capability: Approximately 3× rated torque (dependent on drive and thermal conditions)
  • Rated Speed: 3000 rpm continuous operation
  • Maximum Speed: Up to 8000 rpm (winding and bearing dependent)
  • Efficiency: Up to 95% energy conversion efficiency
  • Positioning Accuracy: ±0.1° (system-dependent with closed-loop control)
  • Encoder Resolution: EnDat 2.2 absolute encoder (multi-turn or single-turn depending on variant)
  • Thermal Time Constant: Optimized for continuous duty cycle operation
  • Acceleration Capability: High torque-to-inertia ratio enabling rapid dynamic response
  • Torque Ripple: Minimized through optimized stator/rotor design for smooth low-speed operation

Material Composition

  • Stator Core: Laminated silicon steel sheets for reduced eddy current losses
  • Rotor: High-energy neodymium-iron-boron (NdFeB) permanent magnets
  • Stator Windings: Copper wire with Class F (155°C) thermal insulation rating
  • Shaft: Hardened alloy steel with precision-ground bearing journals
  • Housing: Aluminum alloy frame with machined mounting surfaces and cooling fins
  • Bearings: Deep-groove ball bearings with lifetime lubrication (standard); reinforced bearing options available
  • Connector Housing: Thermoplastic or metal IP65-rated circular connectors
  • Shaft Seal: Teflon (PTFE) lip seal for IP65 environmental protection
  • Encoder Assembly: Optical or magnetic absolute encoder module with glass or polymer code disk
  • Terminal Box: Aluminum or engineered plastic housing for power and feedback connections

Structural Features

  • Compact 42mm square frame size with optimized stack length for space-constrained installations
  • Modular feedback system supporting multiple encoder technologies (incremental, absolute, resolver)
  • Rotatable connector orientation allowing flexible cable routing in tight installations
  • Integrated thermal protection via embedded thermistors or thermocouples (optional)
  • Keyed shaft design preventing encoder disorientation during shaft coupling maintenance
  • Precision-machined mounting flange with standardized bolt circle dimensions
  • Cooling fin design on housing exterior enhancing natural convection heat dissipation
  • Sealed bearing arrangement protecting internal components from contamination
  • Electronic motor nameplate embedded in feedback device for automatic drive identification
  • Optional holding brake integrated into rear housing for vertical axis applications

Working Principle
The AKM42E-EKGNR-01 operates as a three-phase permanent magnet synchronous motor (PMSM). When the Kollmorgen AKD servo drive supplies three-phase AC current to the stator windings, a rotating magnetic field is generated. This rotating field interacts with the permanent magnets mounted on the rotor, producing electromagnetic torque that causes the rotor to rotate synchronously with the stator field. The EnDat 2.2 absolute encoder continuously monitors the rotor’s angular position and transmits this data to the servo drive via a digital serial interface. The drive uses this real-time position feedback to precisely commutate the stator currents, ensuring optimal torque production and accurate position control. The closed-loop control system continuously adjusts the current magnitude and phase to maintain the desired speed, position, or torque setpoint, compensating for load disturbances and maintaining high dynamic performance.

Related products