AKM21E-ENSN2-03 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen AKM21E-ENSN2-03 is part of the AKM Synchronous Servo Motors series and features a special connector arrangement with a smooth shaft. It has a frame dimension of 58 mm and uses a single-turn optical Comcoder feedback system with 2048 lines per revolution. This model does not include a brake and uses winding designation e.
Internal Product Review
The AKM21E-ENSN2-03 is a Kollmorgen AKM synchronous servo motor with a smooth shaft and special connector arrangement. Comcoder feedback with 2048 lines/rev supports accurate position control and consistent servo response. The brake-free configuration makes the motor a strong choice for precise, efficient motion applications.
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Product Description:
The AKM21E-ENSN2-03 is a synchronous servo motor produced by Kollmorgen for the AKM Synchronous Servo Motors series. It converts electrical energy into tightly regulated rotary motion, allowing machine controllers to position conveyors, gantry axes, or tooling heads with repeatable accuracy in industrial automation cells. This motor is supplied without a brake, so stopping and holding torque must be generated by the drive or external mechanical components when the axis is stationary.
A special connector arrangement provides a nonstandard pin orientation that can ease cable routing where installation space is limited. Rotor position data are delivered at 2048 lines per revolution; after quadrature decoding, the controller receives high-resolution feedback for smooth velocity regulation and accurate position control. The sensing element is a Comcoder, which integrates a code wheel and Hall tracks into a single body, reducing axial length compared with separate feedback components. Its count originates from a single-turn optical system, meaning one mechanical revolution maps uniquely to the electrical code without multi-turn memory. This arrangement is suitable when absolute position is required over only one shaft revolution.
The feedback electronics use the EPC 15T interface, allowing direct connection to compatible Kollmorgen drives without adapters. Mechanical packaging centers on a 58 mm frame, supporting installations where available machine space is limited. The magnetic stack uses rotor length index 1, and this short rotor keeps inertia low for fast acceleration while matching the E-class copper fill associated with the winding designation. Lower rotor inertia helps the motor respond quickly during indexing moves and frequent direction changes. Output torque is transmitted through a smooth shaft, eliminating keyseat stress points and simplifying the use of clamp-style couplings. The compact frame and optical feedback support light-duty indexing and electronic gearing tasks that require accurate motion from a small motor package.
