Product Description:

The AKM21I-ANMN2-02 servo motor is manufactured by Kollmorgen as part of the AKM Synchronous Servo Motors series. It supplies tightly regulated torque and speed for compact automation axes in packaging, electronics assembly, and inspection equipment, where repeatable motion and fast cycle times are required. Using a permanent-magnet synchronous design, the unit works with Kollmorgen drives to support precise rotary movement through an integrated encoder interface. Its compact format also suits short-travel axes where responsive motion and stable control are important.

The square flange measures 58 mm, so the housing bolts directly to IEC gearheads and mounting plates. A smooth shaft is supplied for clamp or compression couplings, which helps avoid the stress concentrations associated with a keyway. The rotor is built without a brake, which saves length and inertia when static holding force is unnecessary. Rotor position is reported by a Comcoder, a resolver-based device with digital interpolation that provides 2048 lines/rev of incremental resolution. The chosen winding designation I matches low-to-medium bus voltages typical of 230 V class servo drives. This combination suits compact mechanisms that need quick starts, stops, and repeatable speed control.

The feedback system is single-turn optical, so its position data repeats after one mechanical revolution. Its coding follows EPC 15T, which uses a connector pinout and signal timing intended for Kollmorgen digital drives. The flange follows IEC accuracy N, helping keep the pilot diameter and bolt pattern within standard concentricity tolerances during installation. Rotor length is identified as index 1, indicating the shortest magnetic core used for this frame size. The short rotor helps reduce inertia during rapid start-stop duty while preserving the continuous torque class of the motor frame.