Product Description:

The MSM215-221-304-E2-0KA is a brushless servo motor built by Kollmorgen within the MSM Brushless Servo Motors series. It is intended to furnish closed-loop rotary power to machine tools, palletizers, and packaging lines that demand repeatable position accuracy. Connected to a compatible servo drive, the unit converts DC bus power into variable-speed operation, giving machine builders a compact alternative to hydraulic or induction solutions. The motor’s flange dimensions and metric shaft make it easy to integrate with gearboxes or timing pulleys already present on existing equipment.

At a continuous torque output of 25 Nm, the motor can hold or move loads without overheating when operated at its rated shaft speed of 3000 rpm. For rapid indexing or shock loads, it supports up to 70 Nm of peak torque, assuming the drive can momentarily deliver 65.1 A peak phase current. The electromagnetic circuit is optimized for a nominal DC link of 460 V, allowing operation from a compatible three-phase supply through the drive. With six rotor poles, the electrical field frequency stays manageable, and motion starts when stall current reaches 20.5 A peak.

The integrated optical encoder provides 2000 lines per revolution, providing granular feedback for tight velocity and position loops. A rotor inertia of 0.0074 kg·m² supports fast acceleration, while a winding inductance of 15.8 mH helps smooth current in combination with the drive’s PWM frequency. The torque constant of 1.36 Nm/A indicates the output produced for each delivered ampere, and the copper windings measure 0.76 Ω during sustained load conditions. Total mass is 26.0 kg, the steel shaft measures 32 mm in diameter, an M12 × 1.75 mm threaded hole simplifies grounding, and the 164 V/KRPM voltage constant indicates back EMF as speed rises.