B-606-B-A9-B3-203 Kollmorgen
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The Kollmorgen B-606-B-A9-B3-203 is part of the Goldline B and BH Motors series and features a fail-safe brake with a voltage of 24 VDC. It has a continuous stall torque of 44.8 N-m and a rated power of 11.2 kW. The motor offers a back emf constant of 67.7 Vrms per kRPM and has a continuous stall current of 40 Arms.
Internal Product Review
The B-606-B-A9-B3-203 is a Kollmorgen Goldline motor rated for 11.2 kW and 35.07 N-m. Continuous stall torque of 44.8 N-m and peak stall torque of 126.1 N-m give the motor strong low-speed authority and excellent overload performance.
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Product Description:
The B-606-B-A9-B3-203 is an AC servo motor produced by Kollmorgen for the Kollmorgen Goldline B and BH Motors series. Within automated machinery, this motor couples directly to ball screws, gear stages, or belt drives to translate drive commands into controlled rotary motion and closed-loop positioning. Its electromagnetic core is optimized for rapid reversals and precise speed regulation, allowing motion controllers to achieve tight settling times in packaging, electronic assembly, and material-handling axes.
The motor can deliver a continuous shaft torque of 44.8 N-m while drawing a continuous stall current of 40 Arms. These steady-state limits indicate the thermal load that the winding insulation and housing can withstand without excessive temperature rise. For fast acceleration, the motor tolerates a peak torque of 126.1 N-m at a peak current ceiling of 118.6 Arms, enabling high-inertia loads to accelerate without requiring a larger frame. A torque constant of 1.12 N-m/Arms links commanded phase current to mechanical output, simplifying current-mode control. Heat generated by copper losses exits through a thermal resistance of 0.26 °C/W, and the 38-minute thermal time constant indicates how slowly internal temperatures respond to load changes. The 0.14-ohm DC resistance moderates inrush at startup, while six rotor poles establish a three-pole-pair magnetic field for smooth commutation.
During continuous operation, the motor can sustain a rated output of 11.2 kW, producing a rated torque of 35.07 N-m at its nominal speed. A back electromotive-force constant of 67.7 Vrms/kRPM assists the drive in estimating speed from induced voltage if feedback is lost. The phase inductance is 3.8 mH, which filters current ripple so pulse-width-modulated drives can switch at high frequencies without causing torque pulsations. A fail-safe holding brake operates from 24 VDC and secures the shaft when power is removed. This brake helps prevent vertical axes or suspended loads from moving while the motor is not producing torque.
