MSM215-407-304-E2-2KA Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
MPN: M.1302.1311
The Kollmorgen MSM215-407-304-E2-2KA is a brushless servo motor in the MSM Brushless Servo Motors series, offering a continuous torque of 46 Nm and a peak torque of 128 Nm. It features a rated speed of 3000 rpm, rated voltage of 460 V, and has a net weight of 43 kg with brake. The servo motor provides a maximum current of 117.4 A peak and a brake voltage of 24 VDC.
Internal Product Review
The MSM215-407-304-E2-2KA is a Kollmorgen brushless servo motor rated for 460 V and 3000 rpm. Continuous torque of 46 Nm and peak torque of 128 Nm give the unit strong servo authority for demanding motion axes.
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Product Description:
The MSM215-407-304-E2-2KA is a brushless servo motor built by Kollmorgen for the MSM Brushless Servo Motors series. Designed for closed-loop motion axes, this motor converts drive commands into precise shaft rotation for positioning, conveying, or tension-control duties in industrial automation. A factory-installed electromagnetic brake holds the load when power is removed, and a six-pole rotor allows synchronous operation with the matched drive.
Under continuous load, the stator delivers 46 Nm of torque, while the thermal design allows the motor to deliver up to 128 Nm briefly during acceleration. To reach these torque levels, the inverter can supply up to 117.4 A peak, while locked-rotor operation requires 36.6 A peak because the winding resistance limits the current rise. Nominal motion is maintained at 3000 rpm, a speed that supports common 1:1 gearless couplings. The motor has an overall length of 405 mm from the mounting face, a keyed shaft ending in an M12 × 1.75 thread, and a net mass of 43 kg with the holding brake installed. Rotor inertia with the brake installed is 0.0171 kg·m², supporting a stable servo response during rapid changes in speed or direction.
The windings are optimized for a supply of 460 V and produce back EMF at a voltage constant of 170 V/krpm, helping the drive keep its DC bus within safe limits across the commanded speed range. The magnetic structure provides a torque constant of 1.4 Nm/A, enabling the controller to translate phase current into predictable shaft torque. Servo bandwidth is influenced by a phase inductance of 8.2 mH and a winding resistance of 0.28 Ω. These electrical values affect the motor’s response time and copper losses during operation. The integrated brake coil is energized at 24 VDC, allowing the brake to operate from a standard control supply without an additional converter. When the brake is released, the motor can rotate freely under drive control; when power is removed, the brake provides load-holding capability for stationary applications.
