Product Description:

The B-102-A-21-E1 is a brushless servo motor manufactured by Kollmorgen for the Kollmorgen Goldline B and BH Motors series. The unit is intended for precision speed and torque control in automated machinery such as pick-and-place heads, labeling stations, and small gantry axes. As a servo element, it converts amplifier output into rotary motion while allowing tight feedback loops through its integrated encoder adapter, making it suitable for high-response industrial positioning tasks that require quick starts, stops, and direction changes. Its compact servo design also suits applications where repeatability and consistent motion over short travel distances are important.

During continuous operation, the motor delivers a stall torque of 0.84 N·m while drawing a steady phase current of 2.4 A RMS. Its back electromotive force is rated at 20.9 VRMS/kRPM, which affects the drive voltage needed as commanded speed increases. The winding resistance is 6.80 Ohms, and the inductance is 30.0 mH, so the drive must manage current rise carefully during rapid response. Rated mechanical output reaches 0.54 kW when the shaft turns at 7500 RPM, and electrical operation remains within the 250 VRMS line limit. The motor also uses standard metric mounting holes, a bayonet power connector, and an encoder adapter that supports accurate closed-loop motion while keeping electrical connection and installation straightforward.

For short overload intervals, the motor can produce a peak torque of 2.41 N·m, and peak demand can rise to 7.2 A RMS of line current. The shaft seal has an IP65 rating, helping the motor resist dust and low-pressure water jets in typical production areas. Rotor inertia is only 0.000031 kg·m², which helps the axis accelerate quickly and respond well during fast indexing moves. The overall motor weight is 2.5 kg, which helps keep moving mass low on compact multi-axis assemblies and supports stable positioning during repeated reversals.