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Key Technical Specifications
- Product Model: AKM42E-EKGNR-01
- Manufacturer: Kollmorgen
- Series: AKM™ (Advanced Kollmorgen Motor) – Size 42 (42 mm frame)
- Continuous Stall Torque: 0.64 Nm
- Peak Torque: 1.92 Nm
- Rated Speed: 3000 rpm
- Rotor Inertia: 0.027 kg·cm² (ultra-low for fast acceleration)
- Feedback Device: EnDat 2.2 absolute encoder (20-bit single-turn, battery-free multiturn via SFD option)
- Motor Type: Brushless AC servo, 3-phase
- Winding Voltage Constant (Ke): 48 V/krpm
- Thermal Protection: Built-in PTC thermistor
- Connector Type: Standard M23 hybrid connector (power + feedback in one)
- IP Rating: IP65 (dust-tight and protected against water jets)
Core Performance and Selection Advantages
The Kollmorgen AKM42E-EKGNR-01 delivers exceptional dynamic response in a compact footprint, making it ideal for applications demanding rapid start-stop cycles or precise trajectory tracking. Compared to legacy servo motors of similar size, it offers up to 25% higher torque density and significantly lower rotor inertia—key factors in reducing settling time and improving throughput. Its thermal design enables sustained operation at rated torque without derating in typical industrial ambient conditions.
A standout feature is the integrated EnDat 2.2 absolute encoder with Safe Functional Distance (SFD) multiturn capability, eliminating the need for external batteries or homing routines at power-up. This not only simplifies commissioning but also enhances machine safety and uptime. From a total cost of ownership (TCO) perspective, the motor’s plug-and-play compatibility with Kollmorgen AKD servo drives reduces engineering time, minimizes wiring errors, and accelerates system validation. The standardized M23 hybrid connector further cuts assembly labor and improves reliability by consolidating power and feedback into a single robust interface.
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Kollmorgen AKM42E-EKGNR-01
System Integration and Scalability
Integration of the AKM42E-EKGNR-01 is streamlined through Kollmorgen’s WorkBench software suite, which supports automatic motor recognition, auto-tuning, and real-time diagnostics when paired with an AKD drive. WorkBench runs on a standard PC and integrates with broader automation ecosystems via open APIs, facilitating digital twin development and predictive maintenance workflows.
In terms of networking, while the motor itself is driven via analog ±10 V or digital commands from the AKD drive, the AKD platform natively supports EtherCAT, CANopen, and Modbus TCP—enabling seamless connection to higher-level PLCs, SCADA systems, and even cloud-based analytics platforms using OPC UA or MQTT gateways. This makes the solution future-ready for Industry 4.0 initiatives.
Scalability is a key strength: the AKM family spans nine frame sizes (from AKM21 to AKM94), allowing engineers to use the same mechanical and electrical integration approach across multiple axes with different torque requirements. The AKM42E can be easily upgraded to AKM43 or downgraded to AKM41 within the same mounting envelope if load profiles change. Additionally, the system supports both standalone and multi-axis configurations using Kollmorgen’s modular drive architectures, including decentralized options like the AKD-NEXO for space-constrained machines.
