Product Description:

The 52.SM.200-34BJ is a synchronous servo motor manufactured by KEB within the SM Synchronous Servo Motors series. Designed for closed-loop motion tasks in industrial automation, the unit converts electrical energy into precisely regulated mechanical rotation for positioning, conveying, and spindle duties across machinery lines. Its permanent-magnet rotor and feedback compatibility allow the drive to regulate torque and speed in real time. The motor uses a flange-mount B5 housing for direct attachment to gearboxes or machine frames, and its brake-free length of 239 mm helps it fit installations where space is limited and forced ventilation is not preferred.

Under continuous load, the motor delivers a mechanical output of 2.67 kW at a synchronous speed of 3000 rpm. At that operating point, it produces 8.5 Nm of shaft torque when supplied with a nominal phase voltage of 400 V and a phase current of 6.2 A. The generated back electromotive force follows a voltage constant of 124.5 V/1000 rpm, which supports drive tuning for field-oriented control. The electrical data also includes 1.7 Ω of winding resistance and 12.5 mH of winding inductance, which influence copper losses and current rise behavior during operation.

For transient demand, the motor can reach a peak shaft capability of 31.5 Nm when the drive supplies a surge current of 35.9 A. Before entering overload operation, the rotor can hold static loads with a continuous stall torque of 10.5 Nm at a continuous stall current of 7.2 A, which helps maintain stable positioning on vertical or high-friction axes without an added brake. These limits depend on the thermal path of the flange-mounted frame, so overload operation must remain time-limited to keep average copper and magnet temperatures within acceptable operating range. The difference between the continuous and peak values provides additional headroom for acceleration phases and short shock loads.