Product Description:

The B-206-B-32-B3 is a brushless AC servo motor manufactured by Kollmorgen in the Kollmorgen Goldline B and BH Motors series. The unit integrates a 24 VDC holding brake so that vertical or indexing axes remain fixed when power is removed, and it supplies the closed-loop speed and torque control required for automated packaging, material handling, and assembly machinery. This arrangement supports accurate motion during operation and stable load holding during a stop. It is suited for equipment that must combine precise servo response with controlled holding at standstill.

The motor develops a continuous stall torque of 6.24 N-m while drawing only 5.8 Arms, giving a favorable torque-to-current ratio. For rapid acceleration, it can reach a peak stall torque of 19.9 N-m at a corresponding current of 19.5 Arms. A torque constant of 1.08 N-m/Arms links drive output current to mechanical torque, which supports straightforward current-mode tuning. The winding impedance is shaped by a DC resistance of 2.32 Ω and an inductance of 32 mH, which govern current rise time and influence servo bandwidth. The stator is designed for operation from drives that supply up to 250 Vrms line voltage, and the embedded windings have a thermal resistance of 0.65 °C/W so heat can move efficiently to the housing during sustained duty cycles.

The electromagnetic design produces a back-EMF constant of 65.1 Vrms/kRPM, allowing the drive electronics to estimate speed from generated voltage during regeneration. On the mechanical side, the rotor inertia is 0.000251 kg-m², balancing dynamic response with load stability, while the brake adds only 0.00000247 kg-m² of additional inertia and supplies 6.0 N-m of static holding torque at the rated coil voltage. The thermal time constant of 21 min shows how long the motor can absorb transient losses before reaching equilibrium, which is useful in cyclic applications. The low added brake inertia helps preserve axis response when the motor starts and stops frequently.