Product Description:

The B-204-A-29-088 is a brushless servo motor in the Kollmorgen Goldline B and BH Motors series, produced by Kollmorgen for precision motion control. In industrial automation, it integrates with a compatible drive to deliver commanded torque and speed to indexing tables, gantry axes, or lightweight conveyors. A four-pole rotor, permanent-magnet construction, and feedback device work together so the motor can follow position and velocity profiles without mechanical backlash or slip.

This model operates from a 115 VAC supply and generates a back electromotive force of 100.5 Vrms/kRPM, a value used by the drive to predict voltage requirements at a given speed. The torque constant is 1.66 N-m/Arms, so each ampere of phase current produces consistent torque. Under continuous load, the shaft can supply 4.47 N-m while drawing only 2.9 Arms; the copper windings exhibit a DC resistance of 9.46 Ω and an inductance of 133 mH, parameters that influence current ripple and servo loop tuning. For rapid accelerations, the drive may command a peak current of 8.1 Arms, aided by the low rotor inertia of 0.000173 kg·m², which allows fast speed changes. The motor’s 4-pole layout supports smooth commutation, and its thermal resistance is 0.74 °C/W, indicating how effectively heat moves from the stator to the frame during prolonged duty cycles.

Short bursts can reach a peak stall torque of 12.8 N-m before magnetic saturation, giving the axis the headroom needed to overcome static friction or process shocks. Rated mechanical output is 440 W, aligning with medium-power tasks that demand continuous precision rather than high horsepower. The aluminum housing weighs 6.2 kg, balancing structural rigidity with manageable load on the machine frame. Thermal transients are moderated by a 21 min time constant, allowing intermittent overloads without quick temperature spikes and ensuring stable performance throughout extended production cycles.