Product Description:

The KA730JS0 is a brushless servo motor manufactured by Sanyo Denki and supplied under the K SANMOTION Servo Motors series. It provides precise rotary motion for axes that must accelerate quickly, stop accurately, and hold position in CNC tools, pick-and-place heads, and automated inspection stations. An integral incremental encoder with 2000 pulses per revolution delivers position feedback to the drive, allowing the velocity and position loops to operate with high accuracy. The encoder also enables the controller to detect small changes in rotor position during low-speed movement and controlled stops.

The electromagnetic circuit has an armature inductance of 1.7 mH and a winding resistance of 1.05 Ω; these electrical characteristics affect the motor’s time constant and current-loop response. Under continuous duty, the motor operates at a rated armature voltage of 75 V and a rated armature current of 4.8 A, producing a shaft output of 300 W. At this operating point, the rotor delivers a rated torque of 1.15 N·m at a rated speed of 2500 rpm, providing the torque and velocity needed for general-purpose motion tasks. The motor also provides a peak stall torque of 9.8 N·m for short acceleration periods and temporary load disturbances.

Mechanical installation is supported by a 76 mm square flange that mates with compatible gearboxes and machine frames. The assembly has a mass of 3.70 kg, which must be considered when the motor is mounted on moving equipment or compact support structures. The rotor has a moment of inertia of 2.7 × 10⁻⁴ kg·m², allowing rapid directional changes without placing excessive demand on the drive. For sustained torque at zero speed, the continuous stall torque reaches 1.43 N·m. The built-in holding brake clamps the shaft with 1.47 N·m when supplied by its 90 V coil, helping prevent vertical loads from drifting while the axis is stationary.