KA406XXX Sanyo Denki
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The Sanyo Denki KA406XXX servo motor is part of the K SANMOTION Servo Motors series and offers a rated output of 60 W with a rated speed of 3000 min-1. It features an armature resistance of 9.8 Ohms, a continuous stall torque of 0.20 Nm, and an IP43 protection rating. The motor has a mass of 0.50 kg and a rated armature voltage of 70 V.
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Product Description:
The KA406XXX is a brushless servo motor produced by Sanyo Denki for the K SANMOTION Servo Motors series. In motion-control assemblies, this compact rotary unit couples to a drive amplifier and follows position, velocity, and torque commands for light-duty axes such as laboratory feeders or miniature pick-and-place heads. By converting electrical input into regulated mechanical rotation, it supports closed-loop automation tasks that require repeatable speed and moderate power in limited space.
The electromagnetic design centers on a nominal winding voltage of 70 V, which allows the drive to operate from low-voltage DC bus supplies typically used in small machines. At this voltage, the armature draws 1.2 A under rated load, and that current combines with the coil resistance of 9.8 Ω to determine steady-state copper loss. When the motor spins at its rated speed of 3000 rpm, the shaft delivers 60 W of mechanical output. The torque constant is 0.177 N·m/A, providing a proportional relationship between armature current and generated torque. An armature inductance of 4.5 mH limits current ripple, and a back electromotive force gradient of 18.5 × 10⁻³ V/rpm helps the drive regulate velocity. Class F insulation permits winding temperatures up to 155 °C during continuous operation.
The motor delivers a continuous stall torque of 0.20 N·m and can reach a peak torque of 1.2 N·m for brief accelerations without magnetic saturation. Dynamic response is aided by a rotor inertia of 0.108 × 10⁻⁴ kg·m², reducing overshoot during fast indexing cycles. The housing has an IP43 protection rating, guarding against solid objects larger than 1 mm and water spray at an angle, so cabinet mounting remains advisable in harsher areas. With a body mass of 0.50 kg, the motor can be integrated into lightweight carriages without adding substantial moving mass. The shaft supplies a rated torque of 0.19 N·m at full speed without exceeding thermal limits. Natural convection around the aluminum frame moderates temperature rise during operation.
