NSM3406 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
MPN: M.1015.6952
The Kollmorgen NSM3406 brushless servo motor is part of the NSM Brushless Servo Motors series and weighs 2.6 kilograms. It offers a continuous torque of 0.8 Nm and a peak torque of 2.5 Nm. The motor features a back EMF constant of 21 volts per kRPM and a torque constant of 0.17 Nm per amp.
Internal Product Review
The NSM3406 is a Kollmorgen brushless servo motor with 0.8 Nm continuous torque and 2.5 Nm peak torque for responsive axis performance. Phase-to-phase inductance of 6.1 mH and phase-to-phase resistance of 2.2 Ohms support predictable tuning behavior and clean current control in demanding servo applications. A particularly appealing characteristic is the low 0.00008 kg-m2 rotor inertia, a strong advantage for fast acceleration and precise positioning.
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Product Description:
The NSM3406 is a brushless servo motor manufactured by Kollmorgen within the NSM Brushless Servo Motors series. It is a compact permanent-magnet rotary actuator that converts controlled three-phase current from a compatible drive into accurate shaft position and velocity. Because of its fast response and repeatable torque delivery, the unit is used in indexing tables, electronic assembly stations, and light material-handling axes where precise movement supports efficient operation. Its embedded rare-earth magnet stack and stator windings provide low inertia and high power density, allowing the motor to respond quickly to changing motion commands without requiring a large installation footprint.
At its rated current, the motor supplies a continuous shaft torque of 0.8 Nm for sustained operation within its thermal limits. For short acceleration periods, it can develop a peak torque of 2.5 Nm to overcome temporary load demands. The magnetic relationship between the windings and rotor is represented by a torque constant of 0.17 Nm/A, indicating the amount of torque produced for each ampere supplied by the drive. The phase-to-phase resistance is 2.2 Ω at 25 °C and influences resistive losses in the windings. The phase-to-phase inductance is 6.1 mH, indicating the winding response to changes in commanded current. These electrical values assist with setting current-loop response and appropriate operating limits for the connected servo drive.
The back electromotive force constant is 21 V/krpm, indicating how much generated voltage increases as rotational speed rises. Dynamic performance is supported by a rotor inertia of 0.00008 kg·m², allowing rapid velocity changes when the control system commands high acceleration. The bearings can sustain a radial load of 103 lb at 500 rpm, allowing properly installed belts, pulleys, or gears to apply force to the shaft. The complete motor weighs 2.6 kg, helping limit added mass when the unit is installed on a moving gantry or articulated joint. Proper coupling alignment and adherence to the stated radial load limit help prevent excessive bearing stress during operation. The compact mass and low rotor inertia also reduce the mechanical effort required to accelerate and decelerate the axis during repetitive motion cycles.
