AKM21C-ACM2LB-00 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen AKM21C-ACM2LB-00 is part of the AKM Synchronous Servo Motors series and has a 58mm frame dimension. It features a 24V holding brake and uses an EnDAT 2.1 multi-turn inductive encoder with feedback resolution of 16 or 32 lines per revolution. The servo motor is equipped with an IEC flange configuration with accuracy N and a keyway shaft detail.
Internal Product Review
The AKM21C-ACM2LB-00 is a Kollmorgen AKM synchronous servo motor with an IEC flange configuration and a keyway shaft. EnDAT 2.1 feedback and multi-turn inductive sensing support precise position control and dependable machine feedback. A 24V holding brake and compact frame make this motor a strong choice for tightly integrated servo axes.
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Product Description:
The AKM21C-ACM2LB-00 is a brushless synchronous servo motor manufactured by Kollmorgen for the AKM Synchronous Servo Motors series. It converts drive current from a matched amplifier into precisely controlled torque and position, making it suitable for indexing tables, compact pick-and-place axes, and light material-handling stages in automated machinery. Electronic commutation provides smooth rotation without the mechanical wear associated with brushes, supporting accurate operation during repetitive motion cycles.
The motor incorporates a 24 V holding brake, so the shaft is locked when power is removed and vertical loads remain stationary. Motion feedback is provided by an EnDat 2.1 encoder, and its base resolution of 16/32 lines/rev supports tight velocity and position loops without external interpolation. The square mounting face measures 58 mm, giving the motor a small footprint for closely packed equipment. Output torque is transmitted through a keyway cut into the shaft, enabling positive engagement with pulleys or rigid couplings. Internally, winding designation C is compatible with drive stages that deliver moderate current at elevated speeds, supporting responsive motion across the intended operating range.
The encoder retains absolute position over power cycles because it operates in an inductive multi-turn mode, with the turn count stored magnetically rather than maintained by a battery. An integrated EQI1130/1331 sensor head combines this multi-turn function with digital position data, allowing motion to begin without a homing cycle. A flange drilled to IEC standards with accuracy class N aligns the motor concentrically with gearboxes and linear actuators, helping minimize runout at the mechanical interface. The rotor length index is 1, indicating the magnetic stack depth and inertia selected for rapid acceleration. This combination of absolute feedback, concentric flange alignment, and controlled rotor inertia supports repeatable positioning in machinery with limited installation space.
