Product Description:

The AKM21E-BNBN1-00 is a synchronous servo motor manufactured by Kollmorgen for the AKM Synchronous Servo Motors series. As a compact rotary actuator for industrial automation, it converts controlled drive current into precise torque and speed for positioning tables, pick-and-place heads, and indexing mechanisms. The product fits applications that need a standardized NEMA flange and high dynamic response from a lightweight 58 mm frame.

The motor terminates power and feedback through two SpeedTec-ready connectors. These keyed, half-turn couplings shorten installation time and maintain IP-rated sealing. Rotor position is measured by a 15-bit optical Comcoder that produces 1024 lines per revolution, giving the controller fine velocity and position resolution. The integrated feedback element is the Comcoder, implemented here as a single-turn optical code disk for applications where multi-turn data are not required. A NEMA flange pattern allows direct attachment to gearboxes or machinery built to this North American standard, while the 58 mm frame dimension limits mass and inertia for faster acceleration. The unit is classified as standard, and its rotor length index of 1 reflects the shortest active stack available for the 2 x 1 frame, balancing torque density with overall length.

The actuator is supplied without a brake, so holding torque must be provided electrically or through external mechanics when power is removed. Its feedback channel identifies positions with the EPC 15T code format, which simplifies parameter selection in compatible AKD drives. A smooth shaft eases coupling to clamp-style hubs and eliminates key stress concentrations in high-cycle duty. The stator windings follow winding designation E, which matches the voltage constant and rated current used with typical 230 VAC servo systems.