Product Description:

The KA730XXX is a brushless AC servo motor manufactured by Sanyo Denki for the K SANMOTION Servo Motors series. It serves as a rotary actuator in industrial automation, delivering commanded motion profiles for pick-and-place axes, indexing tables, and light material-handling equipment. A 76 mm square flange allows direct mounting to compact gearboxes and linear stages, while the motor’s rotor inertia of 2.7 × 10⁻⁴ kg·m² supports quick acceleration without imposing a high load on the drive.

At its continuous operating point, the motor outputs 300 W of mechanical power and maintains a rated speed of 2500 rpm. This operating point corresponds to a steady output torque of 1.15 N·m when the drive supplies a phase current of 4.8 A at a rated armature voltage of 75 V. These values provide a power rate of 4.9 kW/s, indicating how quickly the motor can increase its output from a standstill. The electrical time constant is 1.6 ms, allowing the armature current to build rapidly in response to drive commands. A torque constant of 0.27 N·m/A allows the controller to calculate shaft torque from the commanded current.

The electromagnetic circuit has an inductance of 1.7 mH and a resistance of 1.05 Ω; this combination limits copper losses while keeping current ripple manageable for high-bandwidth control loops. A mechanical time constant of 3.8 ms indicates that the rotor reaches 63% of its final speed shortly after torque is applied, supporting fast point-to-point motion. The motor has a total mass of 2.50 kg, which helps keep moving assemblies light while providing enough material to conduct heat away from the active components. Its voltage constant is 28.6 × 10⁻³ V/(min⁻¹), providing the drive with the relationship between rotational speed and generated voltage for motor control and tuning.