KA730TXX Sanyo Denki
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The Sanyo Denki KA730TXX is part of the K SANMOTION Servo Motors series and has a rated output of 300 W. It features a rated armature voltage of 75 V, a rated current of 4.8 A, and a rated speed of 2500 min-1. The servo motor offers a continuous stall torque of 1.43 N·m, a flange size of 76 mm square, and a mass of 2.85 kilograms.
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Product Description:
The KA730TXX is a DC servo motor manufactured by Sanyo Denki within the K SANMOTION Servo Motors series. It has a 76 mm square mounting flange and an overall length of 172.5 mm, giving it a compact form that fits mid-frame machine layouts. By converting electrical power into tightly regulated torque, the unit drives indexing tables, pick-and-place arms, and other axes that require precise motion control in automated production lines. Its compact housing allows it to fit machinery where installation space is limited. The mounting format also provides a stable interface for alignment with gearboxes, couplings, and driven equipment.
With a rated mechanical output of 300 W, the motor supplies usable power for light-to-medium-duty servo stages. During normal operation, it runs at 2500 rpm, providing suitable speed for indexing and positioning tasks. The corresponding rated torque of 1.15 N·m provides steady rotational force at the rated speed. The armature is energized by 75 V and draws 4.8 A at the rated operating point, permitting connection to a compatible servo amplifier. These electrical and mechanical values allow the drive to regulate speed and torque while accounting for copper losses, iron losses, and available cooling. Proper amplifier selection helps maintain stable current delivery during repeated acceleration, deceleration, and constant-speed operation.
The armature has an inductance of 1.7 mH, allowing current to rise rapidly while remaining within the drive bandwidth. Copper losses are affected by a winding resistance of 1.05 Ω, which contributes to heat that must be removed by airflow around the motor. Dynamic response benefits from a rotor inertia of 2.7 × 10⁻⁴ kg·m², keeping acceleration responsive while damping small load fluctuations. For short bursts such as indexing starts, the shaft can produce a peak stall torque of 9.8 N·m without demagnetization. Continuous stall torque is 1.43 N·m, supporting sustained force when the shaft is stationary. The housing weighs 2.85 kg, and the attached leads extend 1000 mm for convenient cabinet wiring. An integral tachogenerator provides 7 × 10⁻³ V per rpm for speed feedback to the servo amplifier.
