AKM21G-CKGN2-00 Kollmorgen
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The AKM21G-CKGN2-00 is a synchronous servo motor manufactured by Kollmorgen as part of the AKM Synchronous Servo Motors series. It features a 58 mm frame, open keyway shaft, and two SpeedTec Ready connectors. The motor uses a single-turn, optical Comcoder feedback system with a feedback resolution of 2048 lines per revolution and an alternative Flange Variant C.
Internal Product Review
The AKM21G-CKGN2-00 is a Kollmorgen AKM synchronous servo motor with a standard customization level. The Comcoder feedback system with 2048 lines/rev supports precise motion control and dependable position feedback. Two SpeedTec Ready connectors and an open keyway simplify integration, making the motor a strong choice for compact servo axes.
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Product Description:
The AKM21G-CKGN2-00 is a rotary servo motor produced by Kollmorgen as part of the AKM Synchronous Servo Motors series. It is intended for precise position and velocity control in automated machinery, packaging lines, and semiconductor placement tools. Its compact frame and G-class winding suit low-power drive stages that need a balanced combination of inertia, continuous torque, and installation flexibility. This makes it suitable for feeders, indexing tables, and compact transfer modules where axis spacing is limited.
This model is supplied without a brake, so holding torque must be provided by the drive or an external locking device when power is removed. The motor uses two SpeedTec Ready connectors for quick-latch power and feedback cabling, which simplifies routing in confined installations. Rotor position is measured with a resolution of 2048 lines/rev, supporting smooth velocity control in mid-speed ranges. The integrated feedback device is a Comcoder, which combines resolver-style robustness with digital incremental outputs for drives that expect encoder-style signals. The 58 mm frame keeps the motor envelope small for dense multi-axis assemblies. That arrangement is common on axes that do not require load holding after shutdown.
The feedback stack uses a single-turn optical design, so absolute position is available within one rotation without battery-backed revolution counting. Code EPC 15T identifies the sensor's electrical pattern and matches Kollmorgen AKD and S700 controllers. Mounting follows Alternative Flange Variant C, which places the pilot features for legacy metric gearheads and custom plates. The shaft has an open keyway, allowing a standard DIN6885 key to be fitted for torque transfer to pulleys or couplings without extra machining. This layout supports straightforward coupling to common transmission elements used on small servo axes.
