Product Description:

The A2.SM.502-64B0 is a synchronous servo motor produced by KEB within the SM Synchronous Servo Motors series. It serves as a compact rotary actuator for positioning axes and speed-controlled spindles in industrial automation. Designed for integration with KEB drives that supply a 330 V DC link, the motor converts controlled electrical energy into precise mechanical torque for continuous-duty motion tasks. Its compact format also suits machine modules where low moving mass and accurate response are important during repeated start-and-stop operation.

At its nominal operating point, the motor delivers a continuous shaft speed of 6000 rpm while producing 0.62 Nm of torque, and this combination sets its steady-state mechanical output under continuous load. Electrical input is limited to 1.16 A, which helps simplify drive sizing and cabling. Mechanical power reaches 0.39 kW, showing the available output for ongoing motion. The housing is rated IP65, which helps keep dust and water jets away from internal components. The windings are supplied through the DC link, while 13.1 mH inductance and 24 Ω resistance influence current rise and switching behavior. Thermal protection comes from an embedded PTC that trips at 150 °C to help prevent insulation damage during abnormal heating.

For dynamic moves, the motor can accelerate beyond nominal conditions to a peak speed of 9000 rpm. During rapid indexing, it withstands a shaft load of up to 2.9 Nm without demagnetization. Because the resolver is a 2-pole sensor, position information remains available across the full speed range and supports commutation even when the rotor is stationary. Rotor inertia is 0.18 kg·cm², so torque demand translates into quick acceleration while helping keep overshoot in check during reversals. Initial stall capability is 0.66 Nm, which is useful when the axis must hold a static load before motion begins. Back EMF rises according to a constant of 48.2 V/1000 rpm, so regenerated voltage must be managed during deceleration. Despite these operating characteristics, the assembly weighs only 1.2 kg, which helps reduce moving mass on compact gantries and pick-and-place heads.