Product Description:

The AKM21C-EFMN2-01 is a compact synchronous servo motor produced by Kollmorgen within the AKM Synchronous Servo Motors series. It belongs to the broader AKM product family used for general industrial servo applications. The motor is intended for precise torque and speed control in automated equipment such as indexing tables, pick-and-place axes, and light material-handling stations. Its compact format suits installations where space is limited but repeatable motion is still required. This type of motor is commonly used where accurate starts, stops, and speed changes must be maintained over repeated machine cycles.

It is supplied without a brake, so any required holding force must come from external mechanics or static drive torque after power is removed. A shaft seal is installed, expressed as with a shaft seal, to help keep lubricant in place and protect the front bearing from splash. Position data comes from an optical encoder that provides 2048 lines/rev; when interpolated by the drive, this resolution supports tight velocity loops. The sensing hardware is the Kollmorgen Comcoder, a combined commutation and incremental device that reduces cabling and simplifies the motor feedback connection. Internally, the encoder uses single-turn optical sensing, which suits axes that home at startup and need full 360-degree position information during motion.

The encoder channel carries the Kollmorgen identifier EPC 15T, which helps the drive use the correct signal levels and interpolation factors. Mechanically, the motor has a frame size of 58 mm, allowing installation on compact gearboxes and machine faces while retaining enough thermal mass for continuous duty. Stator length follows the manufacturer’s scale, and this model uses rotor length index 1, the shortest magnetic stack for the 58 mm frame; the reduced inertia supports rapid reciprocating moves. Electrical behavior is fixed by winding designation C, which sets the coil turns, resistance, and rated voltage for drives that supply moderate current at standard DC bus levels.