B-404-C-B3 Kollmorgen
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The Kollmorgen B-404-C-B3 is part of the Goldline B and BH Motors series and delivers a rated power of 5.4 kW with a continuous torque of 13.1 Newton-meters at 40 degrees Celsius. This motor features a maximum operating speed of 5000 RPM and a peak torque of 35.3 Newton-meters. It operates with a maximum acceleration of 53700 radians per second squared and uses a brake holding torque of 8.0 Newton-meters at 24 VDC.
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Product Description:
The B-404-C-B3 is a brushless servo motor manufactured by Kollmorgen for the Kollmorgen Goldline B and BH Motors series. Intended for industrial automation, the unit converts three-phase electrical power into precise rotary motion for indexing tables, gantry axes, and packaging machinery. A built-in electric brake enables load holding during emergency stops or power loss, which simplifies vertical-axis safety design. The compact frame allows direct coupling to gearboxes or pulleys, letting designers minimize mechanical compliance while maintaining repeatable position control over long production shifts.
Its continuous shaft torque is 13.1 N-m when the stator temperature is 40 °C. To sustain that output, the drive must supply 19.8 A RMS of line current, a value used to size cable conductors and thermal protection. The winding inductance is 8.4 mH, so current changes are filtered to reduce ripple while still allowing responsive torque commands. A back-EMF constant of 40.2 VRMS/kRPM links rotational speed to generated voltage and helps determine required bus voltage margins. The phase resistance is 0.34 ohms, which contributes to copper losses and supports thermal planning. Additional features include a 5.4 kW power rating and an electrically released brake with 8.0 N-m of holding torque that is released at 24 VDC.
During rapid indexing, the motor can deliver 35.3 N-m of peak torque while drawing 55.9 A RMS from the amplifier for short intervals. With a maximum operating speed of 5000 RPM, this peak torque can accelerate loads quickly, aided by a rotor inertia of 0.000656 kg-m² that balances fast response with mechanical stability. Torque per ampere sensitivity is 0.66 N-m/A, and the insulation permits operation on line voltages up to 250 VRMS, allowing the device to interface with high-voltage drives without exceeding dielectric limits.
Frequently Asked Questions about B-404-C-B3:
Q: What is the back EMF rating of the B-404-C-B3 motor?
A: The B-404-C-B3 motor has a back EMF of 40.2 VRMS per kRPM.
Q: What is the maximum operating speed for the B-404-C-B3?
A: This model can achieve a maximum operating speed of 5000 RPM.
Q: What is the peak torque output of the B-404-C-B3 motor?
A: The B-404-C-B3 delivers a peak torque of 35.3 N-m.
Q: What is the maximum line voltage for the B-404-C-B3 motor?
A: It operates with a maximum line voltage of 250 VRMS.
Q: What is the brake holding torque of the B-404-C-B3 model?
A: The brake holding torque for this motor is 8.0 N-m.
