Product Description:

The B-202-B-21-033 is a brushless servo motor produced by Kollmorgen within the Goldline B and BH Motors series. As a rotary actuator, it converts drive current into controlled torque and speed for positioning tasks in industrial automation such as indexing tables, pick-and-place heads, and packaging axes. The motor pairs with Kollmorgen digital drives, where its embedded feedback and magnetic design allow closed-loop motion control over a wide operating range while maintaining repeatable accuracy during continuous machine operation.

Under steady conditions, the winding draws a continuous phase current of 3.0 Arms, which supports continuous torque delivery within the motor's thermal limits. The electrical circuit includes a line inductance of 68.0 mH in series with 6.98 Ω of line resistance, and these values affect current rise time and drive tuning. During acceleration, the drive may supply a peak current of 9.6 Arms, allowing the motor to reach a peak torque of 7.38 N-m for short intervals. The motor is rated for 1.0 kW of mechanical power when operated from a 230 VAC supply, and the winding insulation is limited to 250 Vrms. A back-EMF constant of 49 Vrms/kRPM supports velocity estimation and commutation during closed-loop operation.

The motor has a rated speed of 3800 rpm, and its 4-pole rotor provides a balance between torque density and top-end velocity. The low rotor inertia of 0.0000996 kg·m² supports rapid acceleration while minimizing stored rotational energy across repeated motion cycles. Thermal behavior is characterized by an 18 min thermal time constant, so temperature changes appear more gradually under varying loads and duty cycles. A torque constant of 0.81 N-m/A converts commanded current into shaft torque, which helps the drive produce predictable response during speed and position control. Stall torque is 2.59 N-m at 25 °C and 2.44 N-m at 40 °C, providing continuous holding capability across ordinary ambient temperatures, and the four-pole construction helps promote smooth torque output.