MSM0303C-0300-NN-M0-CG0 Kollmorgen
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The Kollmorgen MSM0303C-0300-NN-M0-CG0 is a synchronous motor in the MSM Brushless Servo Motors series with a rated power of 377 W and a rated speed of 3000 min^-1. This motor has a continuous standstill current of 2.3 A, a continuous standstill torque of 1.2 Nm, and a peak current of 7.4 A. It features IP65/IP40 protection and weighs 1.5 kg.
Internal Product Review
The MSM0303C-0300-NN-M0-CG0 is a Kollmorgen synchronous motor with 377 W rated power and 3000 min^-1 rated speed. Continuous standstill torque of 1.2 Nm and maximum torque of 3.8 Nm support crisp servo response and dependable load handling. IP65 / IP40 protection makes the motor a strong choice for compact industrial motion systems.
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Product Description:
The MSM0303C-0300-NN-M0-CG0 is a synchronous servo motor built by Kollmorgen within the MSM Brushless Servo Motors series. This 030-frame unit combines a permanent-magnet rotor with a stator winding optimized for closed-loop drives. In industrial automation, it delivers position, velocity, and torque control for indexing tables, small gantries, and light material-handling axes, allowing tight motion profiles without mechanical transmission slack. Its compact housing simplifies installation in confined machine spaces, while the internal feedback interface supports drive controllers that regulate current and speed in real time.
The motor’s electrical and mechanical ratings establish its continuous operating range. At a rated shaft speed of 3000 rpm, it delivers up to 377 W of mechanical power when supplied with a nominal bus voltage of 132 V. At standstill, the magnetic circuit can sustain 1.2 Nm of torque while requiring 2.3 A of phase current, permitting stable holding without overheating. The torque constant is 0.54 Nm/A, meaning each ampere of sinusoidal current produces slightly more than half a newton-meter of torque. The drive uses this value to calculate current commands for precise torque control. Winding resistance at 20 °C is 4.3 Ω, and the 17 mH inductance influences current ripple and controller bandwidth.
The motor can produce a maximum torque of 3.8 Nm for short acceleration periods with a peak phase current of 7.4 A. A rotor inertia of 0.17 × 10⁻⁴ kg·m² supports rapid changes in speed, while a thermal time constant of 25 seconds indicates how quickly the winding temperature responds to changing loads. Enclosure protection is rated at IP65 / IP40; the stator housing resists dust and water jets, while the connector area is intended for a sheltered installation. The motor has a mass of 1.5 kg, which helps keep moving axes lightweight. Its back-EMF constant is 32.6 V per 1000 rpm, allowing the controller to estimate motor speed from the voltage generated during rotation.
