BH-624-D-41 Kollmorgen
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The Kollmorgen BH-624-D-41 is part of the Goldline B and BH Motors series and has a continuous stall torque of 25.6 Newton meters with a peak stall torque of 87.2 Newton meters. This motor features a back EMF constant of 125 Vrms per kRPM, a torque constant of 2.07 Newton meters per Arms, and a continuous stall current of 12.4 Arms. The motor weighs 23.1 kilograms, is 436.4 millimeters in length, and has a rotor inertia of 0.00203 kg-m².
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Product Description:
The BH-624-D-41 is a brushless servo motor manufactured by Kollmorgen for the Kollmorgen Goldline B and BH Motors series. As a three-phase permanent-magnet unit, it converts drive current into controlled rotary motion for positioning tables, gantries, and other automation axes that need predictable torque bandwidth. When paired with Kollmorgen digital amplifiers, the motor serves as the electromechanical element in the servo loop, delivering high torque density while minimizing maintenance through its brushless architecture. Its frame, windings, and feedback options are configured for industrial environments where accurate force regulation and dynamic speed changes are necessary to synchronize machinery with production tasks.
The motor can hold a load steadily at a continuous stall torque of 25.6 N-m, produced while drawing a continuous stall current of 12.4 Arms. During rapid acceleration, the windings tolerate a peak stall torque of 87.2 N-m and a peak stall current of 44.4 Arms, giving headroom for transient mechanical demands. A torque constant of 2.07 N-m/Arms links commanded phase current to shaft torque, simplifying current-mode control calculations. The 1.01 ohm DC resistance limits I²R losses, while the 23 mH inductance shapes the electrical time constant that filters current ripple and reduces control loop noise. Six rotor poles establish the electrical frequency relationship used by the drive.
A back-EMF constant of 125 Vrms/kRPM is the voltage generated per unit speed, which the controller must overcome to achieve high rotational rates. System responsiveness is aided by the rotor inertia of 0.00203 kg-m², which allows quick velocity changes while still helping smooth motion. Heat generated within the stator dissipates over a thermal time constant of 33 min, helping keep operation within insulation limits during repeated duty cycles. At a motor weight of 23.1 kg and a length of 436.4 mm, the unit fits mid-range gantry axes without excessive frame loading while providing stable mounting mass.
Frequently Asked Questions about BH-624-D-41:
Q: What is the back EMF constant for the Kollmorgen BH-624-D-41 motor?
A: The BH-624-D-41 motor has a back EMF constant of 125 Vrms/kRPM.
Q: What is the continuous stall torque rating of the BH-624-D-41 motor?
A: This motor provides a continuous stall torque of 25.6 N-m.
Q: What is the peak stall current on the BH-624-D-41 motor?
A: The peak stall current for this model is 44.4 Arms.
Q: How many poles does the Kollmorgen BH-624-D-41 motor have?
A: The pole count for the BH-624-D-41 is 6.
Q: What is the DC resistance of the BH-624-D-41 motor?
A: The DC resistance of the BH-624-D-41 motor is 1.01 ohms.
