AKM42S-ANSN2-02 Kollmorgen
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The Kollmorgen AKM42S-ANSN2-02 is a synchronous servo motor from the AKM Synchronous Servo Motors series. It features a frame dimension of 84 mm and a smooth shaft with an IEC flange configuration and accuracy N. The motor includes a single turn optical feedback system with 2048 lines per revolution and uses a special connector arrangement.
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Product Description:
The AKM42S-ANSN2-02 is supplied by Kollmorgen within the AKM Synchronous Servo Motors series. Designed for closed-loop control, it transforms regulated three-phase current from a Kollmorgen drive into repeatable rotary motion for indexing tables, linear actuators driven through gearheads, and other position-critical axes in packaging or semiconductor equipment. The medium-frame unit fills the gap between lower-torque size 3 models and larger size 5 variants, providing a balanced option for responsive speed control and continuous-duty operation.
It is built on a frame that measures 84 mm across the mounting face, and the flange follows an IEC pattern with accuracy class N to maintain alignment tolerance without shims. A smooth shaft simplifies coupling because no keyway machining is required, and the rotor length index of 2 provides additional magnetic stack depth for higher torque than shorter versions in the family. Cable routing uses a special connector arrangement, providing flexibility when the motor is rotated inside a tight enclosure. Thermal and electrical behavior is tuned by a special winding that differs from standard winding options to match the voltage and current ratings of customized drive platforms. The unit is supplied without a brake, so an external holding device is needed when the application requires torque retention after power is removed.
For feedback, the motor integrates an incremental encoder with 2,048 lines per revolution and uses a Comcoder device. This sensor applies a single-turn optical scanning method in conjunction with an EPC 15T code wheel, delivering clean sine-cosine tracks that the servo drive can interpolate for high position resolution. The high line count supports smooth low-speed operation, while the optical section avoids the magnetic drift that can affect Hall-effect transducers. Feedback signals allow the drive to detect small changes in shaft position and correct motion errors during operation. The tailored winding and moderate rotor mass also support fast control-loop response for precise contouring and synchronized movement in demanding automation sequences.
