Product Description:

The MT304TB1-R2F4 is a brushless servo motor manufactured by Kollmorgen for the MTC Servo Motors series. It is intended for precision motion tasks in automated machinery where rapid speed changes and accurate torque delivery must be maintained under closed-loop control. When integrated with a compatible drive, the motor delivers repeatable rotary positioning that supports packaging equipment, electronic assembly stations, and light machine-tool axes.

The motor’s back electromotive force is rated at 28.6 VRMS/krpm, a value that helps with selecting an amplifier that has sufficient voltage overhead. During continuous operation, it draws 5.26 ARMS while producing a stall torque of 2.61 N-m; these values establish its continuous operating point. Copper loss is affected by a DC resistance of 1.79 ohms, and the phase inductance of 14.0 mH filters current ripple from pulse-width modulation drives. The windings may be energized from mains-derived buses up to 250 VRMS, supporting midrange cabinet supplies. The motor has a rated speed of 6000 rpm, at which the shaft can deliver 1.31 kW of mechanical power. Eight stator poles interact with the rotor magnets, and a torque constant of 0.473 N-m/ARMS relates commanded current to developed torque. The 25-minute thermal time constant indicates how slowly the winding temperature reacts to load changes, providing time for drive-based thermal models to respond.

For transient demands, the amplifier may supply 20.9 ARMS, allowing the motor to reach a peak torque of 7.41 N-m. When combined with a rotor inertia of 0.0000808 kg·m², this current enables angular acceleration up to 91714 rad/s², which supports short indexing moves. Static friction is limited to 0.035 N-m, so minimal current is used to overcome stiction during startup. The pole count, inductance, inertia, and thermal lag influence servo-loop tuning parameters that help maintain accurate positioning during rapid motion cycles.