MSM215-221-304-E2-2KA Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
MPN: M.1302.1298
The Kollmorgen MSM215-221-304-E2-2KA is a servo motor from the MSM Brushless Servo Motors series with a continuous torque of 25 Nm and a rated speed of 3000 rpm. It operates at 460 V, has a peak current of 65.1 Amps, and features a 2000 line encoder resolution. This motor weighs 29 kg with the brake and offers a shaft diameter of 32 mm.
Internal Product Review
The MSM215-221-304-E2-2KA is a Kollmorgen brushless servo motor built for demanding motion control, with 25 Nm continuous torque and 3000 rpm rated speed. Encoder feedback at 2000 lines pairs well with 70 Nm peak torque, supporting accurate positioning through dynamic load changes. A 24 VDC brake adds practical axis control, making this unit a strong choice for high-performance servo applications.
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Product Description:
The MSM215-221-304-E2-2KA is a brushless servo motor produced by Kollmorgen for the MSM Brushless Servo Motors series. Designed for industrial automation, it converts drive commands into rapid, repeatable shaft rotation for pick-and-place heads, indexing tables, and packaging axes. A 24 VDC holding brake keeps the shaft immobile when the system is powered down. A 2000-line optical encoder returns position information to the controller, enabling precise closed-loop speed and position regulation across the motor’s operating range.
The motor delivers a continuous torque of 25 Nm at its frame temperature limit and can reach a peak torque of 70 Nm during transient moves such as rapid indexing. Its rated speed is 3000 rpm, which corresponds to 50 mechanical revolutions per second. Current demand rises with load, with dynamic cycles drawing up to 65.1 A peak and static stall conditions requiring 20.5 A peak. A torque constant of 1.36 Nm/A relates phase current to generated torque, while a phase resistance of 0.76 Ω contributes to copper losses that the drive system must accommodate. After quadrature decoding, the encoder provides 8,000 counts per revolution for detailed motion feedback.
Power is supplied from a three-phase bus at 460 V, and the motor windings have a phase inductance of 15.8 mH. The inductance and phase resistance establish the electrical time constant that affects current regulation by the drive amplifier. The rotor and brake assembly have an inertia of 0.0104 kg·m², balancing responsive acceleration with load smoothing, while the complete motor has a mass of 29 kg. A hardened steel shaft with a diameter of 32 mm exits the housing and ends in an M12 × 1.75 thread for secure coupling. The back electromotive force gradient is 164 V per 1,000 rpm, allowing the drive to account for generated voltage as motor speed increases.
