NSM4214 Kollmorgen
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MPN: M.1015.6958
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The Kollmorgen NSM4214 belongs to the NSM Brushless Servo Motors series and delivers a continuous torque of 1.8 Nm with a peak torque of 5.7 Nm. This motor has a phase-to-phase inductance of 11.0 mH and a resistance of 2.8 Ohms at 25°C. It weighs 4.7 kg and supports a radial load of 49 kg at 1000 RPM.
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Product Description:
The Kollmorgen NSM4214 is a brushless servo motor belonging to the NSM Brushless Servo Motors series. As a torque-producing element, it converts three-phase drive power into precise shaft rotation, allowing automated equipment to maintain commanded speed profiles, follow position trajectories, or hold static loads. When paired with a digital servo amplifier, the motor forms the electromechanical link between motion controllers and mechanical tooling in assembly, packaging, and small-format machining lines. Its frame size supports standard flange mounting, simplifying installation in existing equipment.
Under continuous excitation, the motor delivers 1.8 Nm of shaft torque, providing steady force for servomechanisms that run without interruption. For brief accelerations, it can reach a peak output of 5.7 Nm, giving it extra capacity to overcome momentary inertial loads. Static drag is limited to 0.043 Nm of friction torque, so only a small amount of current is required to start motion. The stator windings have a phase-to-phase resistance of 2.8 Ω at 25 °C, which affects copper losses and helps establish appropriate drive current limits. A phase-to-phase inductance of 11.0 mH influences current-loop bandwidth and helps filter supply ripple. With a torque constant of 0.41 Nm/A, each ampere commanded by the amplifier produces a predictable mechanical response.
A rotor inertia of 0.00024 kg·m² permits rapid speed changes while still damping minor load disturbances. The frame can support a radial shaft load of 49 kg (109 lb) at 1,000 rpm, making the motor suitable for belt-driven or pinion applications. The motor has an overall mass of 4.7 kg, which eases installation on moving carriages while providing enough material for effective heat dissipation. Its thermal resistance is 1.1 °C/W, allowing the enclosure or ambient air to remove waste heat during rated operation. For velocity estimation, the back-EMF constant is 49 V/krpm, enabling sensorless monitoring or encoder cross-checking by the drive electronics. This electrical relationship allows the amplifier to compare generated voltage with expected rotor speed during operation.
