Product Description:

The AKM21C-ENBNC-00 is a synchronous servo motor manufactured by Kollmorgen for the AKM Synchronous Servo Motors series. Installed on lightweight process axes, it delivers precise torque and velocity regulation so that automated pick-and-place stations, small conveyors, and laboratory instruments follow programmed motion profiles without drift. Its compact servo platform suits installations where low moving mass and accurate motion are important for short indexing cycles and repeatable positioning. The feedback head is listed as size 10/15/21, and the customization level is standard, so no special seals or coatings are included.

The motor’s frame dimension is only 58 mm, giving a compact envelope for tight mounting spaces. Power and feedback are routed through 2 SpeedTec Ready connectors, a keyed arrangement that supports secure cable routing and maintains shield integrity in compact assemblies. Position data come from an SFD feedback system that transmits 4 lines of incremental information to the drive for high-resolution commutation. Absolute reference within one mechanical revolution is available through the single-turn inductive sensor, which reduces homing moves after power-up and supports immediate position tracking. Internal electromagnetic constants follow the manufacturer’s C winding, which balances rated speed with moderate current demand and supports use with standard AKD drives.

Operation is specified without a brake, so external holding devices or continuous torque from the drive must secure the load at standstill. A smooth shaft facilitates direct coupling with collets or clamp hubs and minimizes runout compared with keyed alternatives. The design uses rotor length index 1, the shortest iron stack in this frame size, which limits inertia for rapid acceleration while keeping continuous torque in line with the compact housing. This arrangement is well suited to short-travel axes that need fast starts and stops without adding unnecessary motor length.