Product Description:

The MTC328B1-R1C1 is a frameless-housing AC servo motor built by Kollmorgen for the MTC Servo Motors series. It serves as a torque-controlled rotary actuator that couples directly to precision gear stages or machine shafts in automated assembly, inspection, and packaging equipment, where rapid position loops and repeatable speed control are required. Its compact motor format suits installations where the drive element is integrated closely with the driven mechanism.

Under continuous duty at 40 °C, the motor develops 4.41 N·m of stall torque while drawing a line current of 3.65 A RMS. Its electrical conversion capacity reaches 1.18 kW, which provides a useful reference for matching the motor with a suitable inverter. Short bursts can reach 18.68 N·m when the drive supplies up to 18.7 A RMS. These peak values support fast indexing or brief load shocks that rise above the continuous operating range. Eight rotor poles interact with 35 mH of phase inductance and 4.22 Ω of DC resistance, producing a torque sensitivity of 1.238 N·m/A and helping limit copper losses during constant-speed operation.

The rotor’s low inertia of 0.0001749 kg·m² supports high acceleration, so the control loop can settle quickly after each move. Thermal soak is moderated by a 33 min time constant and a 0.788 °C/W thermal resistance, allowing cyclic overloads before heat reaches critical levels. For holding safety, the integrated brake engages at 24 VDC, and a static friction value of 0.106 N·m helps lightly loaded axes resist drift when power is removed. When the shaft spins, the windings generate a counter electromotive force of 74.9 V RMS/krpm, which the drive can use in field-oriented control and regeneration management. With the brake installed, the assembly weighs 6.1 kg, giving a predictable load for cantilevered mounts and cable carriers.