Product Description:

The B-604-A-21 servo motor is produced by Kollmorgen within the Goldline B and BH Motors series. It is intended to generate rotary motion under closed-loop control in automated machinery, pairing with digital drives for coordinated positioning and velocity regulation. The motor’s electromagnetic design supports mid-range power applications such as indexing tables, packaging axes, and material handling equipment where responsive torque delivery and continuous duty are required.

During steady operation, the winding set can deliver 30.1 N-m of continuous stall torque while drawing 19 Arms. This working point relates directly to the torque constant of 1.58 N-m/Arms, which links commanded phase current to developed shaft torque for current loop tuning. The generated voltage is proportional to speed, with a back-electromotive force of 95.78 Vrms/kRPM; drives must supply matching voltage headroom to overcome this counter-EMF at the rated shaft velocity of 2150 RPM. Coil inductance is 13.3 mH and DC resistance is 0.51 Ω, parameters that influence electrical time constants, copper losses, and regenerative efficiency under dynamic loading.

For motion cycles that involve rapid acceleration, the motor can produce 86.4 N-m of peak stall torque when supplied with 57.4 Arms for a short duration, giving machines the headroom needed to overcome static friction and transient load spikes. Its continuous mechanical output ceiling is 6000 W, achieved at the rated torque of 26.65 N-m, allowing the motor to match suitable gear ratios without overloading the windings. A rotor inertia of 0.00203 kg·m² allows quick speed changes while maintaining stability in servo loops. The housing sheds heat through a thermal resistance of 0.28 °C/W, and the 33-minute thermal time constant indicates how slowly temperature rises under worst-case current, permitting accurate thermal model integration in the drive.