Product Description:

The B-206-C-21 servo motor is produced by Kollmorgen within the Kollmorgen Goldline B and BH Motors series. It is a brushless permanent-magnet unit intended for closed-loop position and speed control on packaging lines, pick-and-place gantries, and other automated machinery. By converting commanded current from a drive into precise rotary motion, the motor serves as an actuator for axes that require accurate torque delivery, repeatable positioning, and fast response during frequent starts and stops. That operating profile is common in assembly equipment where precise motion and quick settling are required.

The motor delivers a continuous stall torque of 6.44 N·m while drawing a continuous line current of 10.0 A RMS from the amplifier. At its rated speed of 4900 RPM, this torque produces a mechanical output of 2.8 kW. A phase-to-phase resistance of 0.82 Ω at 25 °C and an inductance of 11 mH help limit current ripple and copper losses. The 37.7 VRMS/kRPM back EMF constant means the winding develops roughly 185 V when operating at rated speed, which suits drives that supply up to 250 V RMS. A torque constant of 0.62 N·m/A RMS lets control algorithms translate demanded torque directly into current set points during synchronized multi-axis motion.

For rapid indexing moves, the motor tolerates a peak torque of 19.5 N·m when supplied with up to 33.0 A RMS. The low rotor inertia of 0.0002512 kg·m² supports a theoretical acceleration of 77700 rad/s², which helps shorten start-stop cycles in high-throughput equipment. The housing weighs 7.6 kg, and with a thermal resistance of 0.62 °C/W it transfers heat to ambient effectively during continuous operation. Windings reach thermal equilibrium in about 22 min, permitting intermittent overloads without abrupt temperature rise. This thermal response is useful in duty cycles that alternate between short bursts of high torque and lower steady-state demand.