NSM5647 Kollmorgen
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MPN: M.1015.6966
The Kollmorgen NSM5647 is a servo motor within the NSM Brushless Servo Motors series. It features a continuous torque of 6.0 Nm and a peak torque of 17.0 Nm, with a back EMF constant of 77 V per kRPM. The motor weighs 13.0 kg and supports a radial load of 51 kg at 3000 rpm and 92 kg at 500 rpm.
Internal Product Review
The NSM5647 is a Kollmorgen brushless servo motor with 6.0 Nm continuous torque and 17.0 Nm peak torque. Low rotor inertia of 0.00147 kg-m2 and a 0.63 Nm/A torque constant support responsive servo tuning and efficient current utilization. An excellent fit for demanding motion systems requiring precise and stable torque delivery.
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Product Description:
The NSM5647 is a brushless servo motor produced by Kollmorgen as part of the NSM Brushless Servo Motors series. It functions as a precision rotary actuator in automated machinery, delivering feedback-controlled motion for axes that must accelerate quickly and maintain positional accuracy. When paired with a compatible drive, the motor converts three-phase electrical power into controlled torque for conveyors, pick-and-place heads, and similar industrial mechanisms.
In continuous duty, the motor generates 6.0 Nm, while its overload margin permits bursts of 17.0 Nm for fast indexing. The internal permanent-magnet design yields a back EMF constant of 77 V/kRPM, so operation at 3000 rpm produces roughly 231 V across the phases. Current-to-torque conversion is represented by a constant of 0.63 Nm/A, allowing supply current to be estimated under varying loads. The laminated stator produces 7.0 mH of phase inductance, limiting ripple that originates from high-frequency inverter switching. Dynamic response benefits from a rotor inertia of 0.00147 kg-m², enabling rapid reversals with moderate servo gains. Resistance measured at 25 °C is 1.23 Ω, establishing the baseline copper loss that must be dissipated through the frame.
Bearings sized for side loading permit a radial load of 51 kg at 3000 rpm and as much as 92 kg when the shaft turns at 500 rpm, supporting pulley or timing-belt drives without extra supports. The assembly weighs 13.0 kg, which must be considered when calculating loads on moving axes and planning installation. The winding resistance and mechanical load limits affect thermal performance because elevated belt tension or high-duty operation can increase current demand. Proper drive tuning must balance the motor’s low inertia with the available load capacity to support rapid acceleration while preserving bearing life and winding insulation.
