Product Description:

The B-202-C-99-270 is a brushless permanent-magnet servo motor manufactured by Kollmorgen in the Goldline B and BH Motors series. As a compact rotary actuator, it converts drive-supplied electrical power into precise shaft motion for position or velocity control loops used in machine tools, packaging lines, and electronics assembly equipment. Internal resolver feedback supports stable commutation and speed tracking, while the laminated core helps the axis respond quickly to changing commands. This combination makes the motor suitable for applications that need repeatable motion under varying load conditions without adding excessive rotor mass.

At its base operating point, the motor supplies 1.5 kW of mechanical power while running at a rated speed of 6200 rpm. Continuous stall capacity is 2.59 N-m at 25 °C, and the windings draw a sustained phase current of 5.00 A RMS. An inductance of 25.0 mH slows the rate of current rise, which affects current-loop response and helps shape amplifier tuning. When ambient temperature reaches 40 °C, the allowable steady torque drops to 2.44 N-m, showing that continuous output depends on available heat removal. Winding resistance is 2.34 Ω at 25 °C, which contributes to copper loss during steady loading. The motor generates 29.4 V RMS of back EMF per kRPM and can be driven up to 250 V RMS line to line, so the selected amplifier must be matched to the motor’s voltage and speed range. Torque sensitivity is 0.49 N-m/A RMS, allowing shaft torque to be estimated directly from measured current.

During acceleration or impact loading, the motor delivers a peak torque of 7.65 N-m supported by a momentary phase current of 16.6 A RMS. The low rotor inertia of 0.0000996 kg-m² permits very fast speed changes, which helps pick-and-place heads and similar axes reverse direction with limited overshoot. Heat is absorbed gradually because the motor has a thermal time constant of 18 min, so short overloads do not raise winding temperature as quickly as they would in a smaller thermal mass. A thermal resistance of 0.87 °C/W indicates the heat path from the windings to the housing, helping the motor remain within insulation limits during intermittent overload operation.