AKM42H-BKCNAB-00
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The AKM42H-BKCNAB-00 is a high-performance synchronous servo motor with a continuous stall torque of 3.54 n-m and an ambient temperature rating of 40°C. Manufactured by Kollmorgen as part of the AKM Synchronous Servo Motors series, it supports a maximum speed of 2890 rpm at 120 VAC and offers a peak stall torque of 11.6 n-m.
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Product Description:
Kollmorgen manufactures the AKM42H-BKCNAB-00. For precise motion control, the Kollmorgen AKM42H-BKCNAB-00 synchronous servo motor will not experience thermal runaway when held in place and can maintain a constant rotating force. It can produce 3.54 Nm of stall torque. The electrical demand under these conditions is determined by the corresponding continuous stall current of 6 A, and the configuration of the drives and power supply is based on this current-to-torque relationship. For applications where constant mechanical resistance is required, sustaining preload in linear actuators or controlling tension in coordinated motion systems, stability is achieved by aligning torque needs with electrical capacity. By limiting internal copper losses to acceptable operating margins, this alignment prevents thermal drift in the control system.
The motor is electromechanically tuned to run at 120 VAC and can run up to 2890 RPM. Rotational speed and torque production are controlled by the stator’s electromagnetic field, which is determined by the applied voltage. The motor’s stall torque drops to 2.83 Nm at high winding temperatures (60°C thermal rise), showing the effect of thermal expansion and higher resistance on magnetic coupling efficiency. In applications where duty cycles or environmental conditions may raise winding temperature, thermal derating is a design issue since it affects the motor’s stall torque production and may require active cooling or heat dissipation systems. Such operating restrictions ensure the motor’s insulation integrity and mechanical performance over time. A peak stall current of 24 A and a peak stall torque of 11.6 Nm is the dynamic load response. When accelerating quickly or decelerating suddenly, these numbers show the motor’s transient ability to handle resistive peaks or inertial loads.
The motor controller and drive electronics must provide this amount of instantaneous power throughput to handle this current spike without tripping overcurrent protection or overheating. In terms of materials, the motor’s 510 W rated power is related to magnetic field strength, rotor dynamics and thermal dissipation; the 0.000145 kg·m² rotor inertia allows for fast response. For high-speed automation, the low inertia reduces latency in speed changes and improves positioning accuracy. In feedback-driven control loops, the back EMF constant of 38.3 V/krpm affects the velocity estimate, and the torque constant of 0.59 Nm/A RMS is the motor’s mechanical output per unit of current. In continuous or high-frequency applications, the motor’s phase-to-phase resistance of 1.65 ohms at 25°C is a moderate electrical impedance that affects temperature increase and copper loss. These are important for long-term operational efficiency and thermal stability.
Frequently Asked Questions about AKM42H-BKCNAB-00:
Q: What is the continuous stall torque of the AKM42H-BKCNAB-00 servo motor?
A: The AKM42H-BKCNAB-00 delivers a continuous stall torque of 3.54 Newton-meters, which means it can sustain that torque level during steady-state operation without overheating. This makes it suitable for applications requiring consistent and reliable force output over time.
Q: What is the peak stall torque and why is it important?
A: The peak stall torque is 11.6 Nm. This is the highest torque the motor can provide momentarily, allowing it to handle short bursts of high load without stalling. It’s essential in operations involving sudden starts or stops.
Q: What is the maximum operating speed of this motor?
A: At 120 VAC, the motor can reach up to 2890 rpm. If operated at 240 VAC, it can go up to 5780 rpm. These high-speed capabilities support precise and fast motion control in automated systems.
Q: What role does rotor inertia play in motor performance?
A: The rotor inertia of 0.000145 kg-m² contributes to how quickly the motor can accelerate or decelerate. Lower inertia allows for quicker response to control inputs, making it ideal for tasks requiring fast and accurate positioning.
Q: How much power does this motor produce?
A: The motor has a rated power output of 510 watts when operating at 120 VAC. At 240 VAC, it increases to 1170 watts. This range supports a broad spectrum of industrial automation needs where energy efficiency and high output are both necessary.
