MTB704B1-F1A1 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen MTB704B1-F1A1 is part of the MTC Servo Motors series and offers a rated power of 5.7 kW with a continuous stall torque of 31.3 Newton-meters. It has a peak torque of 90.6 Newton-meters, 8 poles, and a rated continuous line current of 19.2 Amps RMS. The motor also has a back EMF of 100 Volts RMS per krpm and a brake voltage of 90 Volts DC.
Internal Product Review
The MTB704B1-F1A1 is a Kollmorgen MTC servo motor with 5.7 kW rated power and 31.3 N-m continuous stall torque. Peak output is especially appealing for dynamic motion applications, with 90.6 N-m peak torque and 11624 rad/s^2 max acceleration. A 60 min thermal time constant supports stable operation, making this servo motor a strong choice for demanding duty cycles.
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Product Description:
The MTB704B1-F1A1 is a brushless servo motor manufactured by Kollmorgen for the MTC Servo Motors series. In automated machinery, it delivers commanded torque and velocity to linear tables, rotary indexers, and multi-axis gantry heads, providing repeatable positioning under digital feedback control. The motor incorporates an eight-pole rotor for smooth low-speed operation. Its integrated brake operates at 90 VDC and holds the connected load when the drive is disabled.
Under continuous loading, the shaft can deliver 31.3 N·m while drawing 19.2 A RMS, resulting in a mechanical output of 5.7 kW at nominal speed. For transient moves, the drive may apply 67.1 A RMS and produce a peak torque of 90.6 N·m, providing additional capacity for rapid starts or shock loads. The torque constant is 1.65 N·m/A RMS, indicating the relationship between supplied current and generated torque. A maximum acceleration of 11,624 rad/s² supports short positioning cycles. Static friction is limited to 0.353 N·m for smooth reversals, while a phase resistance of 0.416 Ω influences current ripple. The frame has a thermal resistance of 0.301 °C/W, which helps it dissipate losses generated during sustained operation.
The back electromotive force is 100 V RMS/krpm, a value that supports drive voltage selection for the intended speed range. A phase inductance of 9.7 mH smooths current changes caused by drive switching. The laminated steel stack contains a rotor with an inertia of 0.0078 kg·m², allowing closed-loop controls to bring the motor to its commanded speed with limited overshoot. The winding has a thermal time constant of 60 minutes, indicating how gradually its temperature approaches equilibrium during extended operating cycles. This gradual heat buildup supports predictable temperature changes under sustained loading without altering the motor’s electrical symmetry.
