AKM21G-CKCNEM-00 Kollmorgen
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The Kollmorgen AKM21G-CKCNEM-00 is part of the AKM Synchronous Servo Motors series and features a 58mm frame dimension. This servo motor includes two SpeedTec Ready connectors, comes with an open keyway shaft, and uses an alternative Flange Variant C configuration. The design is without a brake and is designated with winding type G.
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Product Description:
The AKM21G-CKCNEM-00 is a compact synchronous servo motor manufactured by Kollmorgen for the AKM Synchronous Servo Motors series. It functions as a precise torque source in closed-loop control systems, converting drive currents into controlled shaft rotation for pick-and-place axes, light packaging stations, and other coordinated automation tasks. Its compact housing supports direct installation in multi-axis gantries and robotic joints where available space is limited. The motor also provides the responsive motion required for frequent acceleration, deceleration, and positioning cycles.
With a 58 mm frame dimension, the motor fits into space-constrained machines while accommodating the magnetic stack associated with its rotor length. The stator has winding designation G, which indicates a coil pattern with back-EMF and current characteristics suitable for pairing with compatible AKD drives. Mechanical attachment uses alternative flange variant C, allowing the housing to bolt to gearboxes or mounting plates that share the same footprint. Power and feedback circuits connect through two SpeedTec Ready connectors, allowing the corresponding cables to be secured quickly without tools. The unit is supplied without a brake, which eliminates brake drag during operation. Applications that require a stationary vertical load must provide holding force through the drive or an external mechanism.
The internal rotor has rotor length index 1, which is the shortest magnetic stack available for this frame size. Its low rotor inertia supports rapid acceleration and responsive changes in shaft speed, while its continuous torque capacity remains suitable for modest loads. Output torque is transferred through an open keyway on the shaft, providing positive engagement with compatible pulleys, gears, or rigid hubs. This shaft arrangement helps prevent relative rotation at the coupling when torque changes rapidly. Integrated feedback and thermal monitoring connections allow a compatible servo drive to regulate motion and respond to motor temperature. The motor is intended for coordinated automation systems that need accurate speed, torque, and position control within a compact mechanical envelope.
