B-206-D-91-087 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen B-206-D-91-087 is part of the Goldline B and BH Motors series and delivers 3730 watts of rated power with a rated speed of 7000 RPM. It features a continuous stall torque of 6.51 N-m, rated torque of 5.09 N-m, and a peak stall torque of 19.9 N-m. The motor is designed with a back EMF constant of 26.2 Vrms/kRPM and has a rotor inertia of 0.000251 kg-m².
Internal Product Review
The B-206-D-91-087 is a Kollmorgen Goldline servo motor with 3730 W rated power and 7000 RPM rated speed. Continuous stall torque of 6.51 N-m and peak stall torque of 19.9 N-m give the motor strong overload capability for demanding motion applications. A very capable choice for high-response servo systems.
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Product Description:
The B-206-D-91-087 servo motor is manufactured by Kollmorgen within the Kollmorgen Goldline B and BH Motors series. This brushless permanent-magnet unit delivers rotary motion in automated pick-and-place stations, packaging machinery, and indexing tables where fast acceleration and precise velocity control are required. When paired with a matched digital drive, the motor converts regulated three-phase power into controlled shaft torque, giving machine builders a compact actuator that integrates easily into closed-loop motion axes across general industrial automation.
Under continuous operation, the motor provides a shaft output of 3730 W. This power rating is achieved at a rated speed of 7000 rpm, where the electromagnetic design develops a steady-state torque of 5.09 N-m. To maintain that load, the windings draw a continuous phase current of 15 A rms, while the motor provides a continuous stall torque of up to 6.51 N-m. A direct-drive application can hold its position without motion until this torque threshold is reached. The motor has a thermal resistance of 0.6 °C/W and a thermal time constant of 22 minutes, which characterize its response to sustained loading.
Transient moves are supported by a peak torque reserve of 19.9 N-m, which the magnetic circuit can deliver when the drive supplies up to 48.5 A rms for short periods. The rotor inertia of 0.000251 kg-m² allows rapid acceleration toward the set speed while minimizing overshoot. Electrical integration is supported by a back electromotive force constant of 26.2 V rms/krpm and a torque constant of 0.434 N-m/A rms, which guide drive voltage selection and current-loop tuning. The phase inductance is 5.3 mH, and the phase resistance is 0.38 Ω. The maximum winding voltage is 250 V rms, providing sufficient capacity for high-bandwidth servo loops without exceeding the winding insulation limit.
