Product Description:

The M-205-A-23 servo motor is produced by Kollmorgen as part of the M Goldline Servo Motors series. Designed for medium-power machine axes, the unit couples a rare-earth rotor with a laminated stator to deliver repeatable motion control in automated assembly lines, packaging equipment, and general factory machinery. It operates as a brushless permanent-magnet motor that receives sinusoidal current from a matched drive and returns high-resolution feedback to keep position, speed, and torque within tight tolerances during continuous production.

Electrical characteristics determine how the motor interfaces with its drive. The windings can be energized with a line-to-line voltage up to 250 VRMS, and sustained operation draws only 2.7 A RMS, which limits heating while still delivering a stall torque of 4.47 N-m at 40 °C. For short overloads, the rotor can generate up to 13.7 N-m, giving headroom for acceleration or tension spikes. Each additional ampere produces about 1.66 N-m/A RMS, a sensitivity that simplifies current-loop tuning. The back electromotive force constant of 100.5 VRMS/kRPM predicts the voltage returned to the amplifier during regeneration. An inductance of 133.0 mH filters current ripple, while the 9.46 Ω DC resistance contributes to copper loss. Four embedded poles establish a smooth electromagnetic cycle for sinusoidal commutation.

Mechanical proportions are compatible with compact machinery. The motor delivers 0.82 kW of output at 1900 rpm, translating electrical power into rotational energy through a 100.00 mm mounting bolt circle that matches standard IEC flanges. A rotor inertia of 0.001143 kg-m² allows fast speed changes without excessive drive bandwidth, and the total mass of 7.3 kg eases handling during assembly. The active body measures 203.1 mm, while the overall length including the shaft and connectors extends to 315.4 mm, which helps the motor fit within common cabinet depths. The mounting pattern and overall envelope should be considered when planning flange clearance and rear cable routing.