Product Description:

The M-605-B-A9-260 is a brushless servo motor built by Kollmorgen for the M Goldline Servo Motors series. It serves as the primary torque source on numerically controlled machine axes, conveying commanded motion to ball screws, belts, or geared transmissions in industrial automation cells. By pairing with a compatible digital drive, the motor supplies closed-loop rotary power where precise position, velocity, and acceleration profiles are required. Its brushless design reduces wear at the motor itself and supports repeatable motion during frequent duty cycles.

This model draws a continuous line current of 27.7 ARMS to deliver a rated mechanical output of 7.7 kW at a base speed of 3150 rpm. A torque constant of 1.09 N·m/ARMS links stator current to output torque, while a back-electromotive-force value of 65.9 VRMS/krpm indicates the voltage generated as the rotor turns, which helps match the motor to a suitable drive and manage regenerated energy. Electrical characteristics include 0.234 ohms of DC resistance and 6.3 mH of phase inductance, and these values influence thermal loading and current ripple. The six-pole design works with the frameless resolver feedback to provide commutation data every electrical cycle. That feedback helps the controller maintain smooth torque production during acceleration and low-speed operation. Static friction is 0.52 N·m, and the winding thermal time constant is 28 minutes, showing how quickly the motor heats under load.

Dynamic overload capability is expressed by a peak torque of 87.7 N·m, attainable when the drive supplies momentary phase currents up to 84.8 ARMS. These peaks remain within insulation limits as long as the line voltage does not exceed 250 VRMS. The rotor’s mass moment of inertia is 0.01406 kg·m², providing a balance between rapid acceleration and torsional stability, while a stall torque of 30.1 N·m indicates the mechanical output available at zero speed for holding or low-speed indexing. This operating profile suits axes that alternate between steady running and short bursts of higher demand.