Product Description:

The AKM21C-ESB2C-02 is a Kollmorgen servo motor in the AKM Synchronous Servo Motors series. Designed for closed-loop axis control, it delivers precise torque and velocity for packaging, pick-and-place, and machine-tool positioning stages. Integrated with a compatible drive, the unit converts commanded current into mechanical rotation so that actuators and gear trains follow programmable motion profiles in industrial automation cells. Its compact profile permits installation inside constrained machinery spaces where low inertia and rapid response are required. This makes it well suited for compact rotary axes that need fast starts, short settling times, and repeatable positioning during frequent duty cycles.

The motor is equipped with a 24 V holding brake, allowing the shaft to stay locked when power is removed so suspended loads do not drift. Power and signal connections use two SpeedTec Ready connectors, a keyed design that supports quick cable attachment while maintaining seal integrity. Rotor position data are sent over 4 lines, which helps keep the cable light and flexible. The internal encoder uses the SFD protocol to deliver digital absolute data with error checking. A square frame dimension of 58 mm sets the mounting surface and aligns this model with other motors in the AKM product line. The connector arrangement also helps route motor and feedback cables through tight machine spaces.

The encoder is a single-turn inductive design, so position is retained for one mechanical revolution without batteries or optical components. Its housing is classified as Size 10/15/21, matching the feedback assembly to the motor diameter for consistent signal performance. Mechanical length is identified by rotor length index 1, which is the shortest stack available in the 21 frame and helps minimize mass for dynamic axes. The motor uses winding designation C, a coil set balanced for medium bus voltages and moderate current ratings. A special shaft machining is supplied to accept application-specific couplings without additional adapter sleeves. That shaft preparation suits compact motion systems that use custom couplings or integrated transmission parts.