Product Description:

The AKM21E-BSSNR-02 is a compact synchronous servo motor manufactured by Kollmorgen within the AKM Synchronous Servo Motors series. As a rotary actuator, it converts drive current into precise shaft motion for positioning, velocity, and torque control tasks found in packaging stations, semiconductor tools, and small-format conveyors. By combining a lightweight stator, rare-earth magnets, and integrated feedback, the motor supports closed-loop automation where tight dynamic response and limited installation space are critical. It is well suited to compact indexing tables and pick-and-place mechanisms where rapid starts and stops are common.

This model is built on a 58 mm frame and uses a flange that follows the NEMA pattern, allowing direct mounting to standardized gearheads or machine plates. It is supplied without a brake, so holding torque must be provided externally when power is removed. Power and feedback exit through a special connector arrangement, which can help route cables in crowded machine spaces. The rotor uses the shortest active stack in the family, and the shaft includes a special detail for nonstandard couplings. Position information is captured by a resolver with a native resolution of 2 poles, which affects the electrical cycle count used for commutation.

The feedback device is a resolver built as a single-turn inductive unit, so it reports rotor angle within one revolution without using optical components. Its mechanical interface matches the feedback housing standard listed as Size 10/15/21, so it fits the corresponding envelope codes used for this feedback arrangement. Winding code e sets the coil resistance and inductance expected by the drive amplifier, helping the motor deliver commanded current within its thermal limits. The nonstandard shaft detail supports coupling arrangements that do not use the standard shaft option for this frame.