KA850JXX Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki KA850JXX is a servo motor from the K SANMOTION Servo Motors series with a mass of 5.24 kg and a rated output of 500 W. It delivers a continuous stall torque of 2.16 N·m and a peak stall torque of 16.7 N·m. The motor operates at a rated speed of 2500 min⁻¹ and a rated armature voltage of 80 V.
Internal Product Review
The KA850JXX is a Sanyo Denki K SANMOTION servo motor rated at 500 W with a 2500 min⁻¹ speed. Rated torque of 1.91 N·m and peak stall torque of 16.7 N·m give this motor impressive dynamic response for precise axis control. Rotor inertia of 6.0×10⁻⁴ kg·m² supports fast acceleration and smooth tuning, a strong advantage for responsive motion systems.
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Product Description:
The KA850JXX servo motor belongs to the K SANMOTION Servo Motors series from Sanyo Denki. It is a brushless, permanent-magnet actuator used in automated machinery where tight speed and position control are required. When paired with a compatible digital drive, the motor supplies repeatable torque and velocity so conveyors, gantry axes, and indexing tables can follow programmed motion profiles. Its electronic commutation eliminates the mechanical wear associated with brushes and supports responsive operation during frequent starts, stops, and direction changes.
At its electrical operating point, the motor delivers a continuous mechanical output of 500 W while turning at a rated speed of 2500 rpm. The winding operates at a nominal armature voltage of 80 V and draws a rated current of 7.4 A. At that operating condition, the armature resistance is 0.53 Ω, which helps with estimating copper loss, thermal rise, and cable requirements. The combination of voltage, current, and resistance allows a compatible servo drive to regulate the winding without exceeding the motor’s continuous operating range. Proper drive matching also supports stable current control during changes in speed or load.
The motor produces a continuous stall torque of 2.16 N·m and a peak stall torque of 16.7 N·m for short acceleration demands. A permanent-magnet brake provides 1.96 N·m of holding torque, while its coil draws 0.11 A when energized. This brake prevents load drift when the axis must remain stationary after motor power is removed. Dynamic response is influenced by a rotor inertia of 6.0 × 10⁻⁴ kg·m² and an armature inductance of 0.86 mH. The torque constant is 0.286 N·m/A, allowing the controller to translate current commands into expected shaft torque. The tachometer output supports feedback circuits with a 10 kΩ load resistance. With a mass of 5.24 kg, the motor can be installed on light-duty machine frames without requiring excessive structural reinforcement.
