Product Description:

The C2.SM.000-4200 is a synchronous servo motor manufactured by KEB and supplied as part of the SM Synchronous Servo Motors series. It is intended for closed-loop industrial automation where fast, precise shaft positioning is required, such as pick-and-place stations, printing cylinders, or compact machine axes. The motor is suited to applications that need repeatable motion, stable speed control, and accurate response to changing load conditions.

With a maximum rotational velocity of 9000 rpm, it can execute rapid indexing moves, while a peak torque of 18.90 Nm supports short accelerations against process loads. Continuous operation uses a rated phase current of 3.8 A, and the drive may draw up to 22.7 A in brief overloads before thermal limits intervene. Four pole pairs synchronize the rotor to the stator field, and the back EMF gradient of 96.17 Vpk/1000 rpm helps the inverter match voltage to motor speed. Rotor inertia is 1.98 kgcm², which supports quick acceleration while keeping servo tuning manageable. From zero speed, the windings have a resistance of 3.7 Ω, and a stall current of 4.1 A produces 4.1 Nm of holding torque. These electrical values support responsive motion in machines that require frequent starts, stops, and short positioning cycles.

The housing has an IP54 protection rating that helps block dust and resist splashed fluids during operation. Bearing service life is rated at 30,000 h, which fits common preventive maintenance intervals in industrial equipment. Power is transmitted through a shaft with a diameter of 19 mm, and the 80 mm flange pilot helps center the motor accurately on mating gearboxes or machine frames. The magnetic circuit has a winding inductance of 22.2 mH, which moderates current rise without slowing normal servo response. This combination of mounting accuracy, sealing, and electrical behavior makes the motor suitable for compact axes that need dependable positioning over long operating periods.