Product Description:

The B-106-A-32-B3 motor is built by Kollmorgen as a member of the Kollmorgen Goldline B and BH Motors series. It is a permanent-magnet, brushless unit used in industrial automation to drive precision rotary axes, where fast torque rise and accurate speed control are needed for positioning, metering, or web-handling machinery. A factory-fitted power-off brake can be included, and the added frame length for that option helps determine available installation space in compact machine layouts.

The motor delivers 2.20 N-m of continuous stall torque when cooled by natural convection, and it reaches a nominal shaft speed of 4200 RPM, allowing constant mechanical output over a broad duty cycle. To sustain that output, it draws 3.0 A RMS of continuous line current, while short bursts may climb to 9.0 A RMS without violating thermal limits. During acceleration events, the electromagnetic structure can generate up to 6.18 N-m of peak torque, which pairs with its 0.90 kW rated power to move moderate inertia loads rapidly. The 37.5 mH phase inductance and 6.50 Ω DC resistance affect current rise time and copper heating, so the drive can maintain stable current loops. A rotor inertia of 0.0000765 kg-m² minimizes settling time, and thermal resistance at stall of 0.87 °C/W limits the allowable ambient temperature.

Magnetic coupling efficiency is reflected in the torque constant of 0.72 N-m/A RMS, meaning each ampere produces usable shaft torque. The motor also develops a back electromotive force of 43.7 VRMS/kRPM, which the servo amplifier uses for field-oriented control. When the power-off brake option is chosen, it supplies 2.3 N-m of holding torque, operates on 24 VDC at 0.93 A, and extends the housing by 38.9 mm. These brake values help confirm holding capability and available cabinet depth, while the inductance, resistance, and thermal data support proper drive selection.