KA850XS0 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki KA850XS0 is a servo motor in the K SANMOTION Servo Motors series with a rated output of 500 W, rated speed of 2500 min-1, and a rated torque of 1.91 N·m. It features a flange size of 88 mm square, weighs 4.25 kg, and has a line driver encoder with 2000 pulses per revolution. The motor operates at a rated armature voltage of 80 V and rated current of 7.4 A.
Internal Product Review
The KA850XS0 is a Sanyo Denki K SANMOTION servo motor rated for 500 W with a rated speed of 2500 min-1. A line driver encoder with 2000 P/R supports clean feedback and dependable positioning in motion control service. Strong torque performance and 16.7 N·m peak stall torque make the unit a very capable choice for demanding servo axes.
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Product Description:
The KA850XS0 is a brushless servo motor built by Sanyo Denki for the K SANMOTION Servo Motors series. Designed for closed-loop axis control in packaging machines, pick-and-place modules, and other motion subsystems, the unit converts commanded current into rotary torque using feedback from its integrated encoder. An 88 mm square flange simplifies coupling to gearboxes, while the sealed frame keeps the overall length short enough for space-limited automation cells.
During continuous operation, the motor produces a mechanical output of 500 W. This output is achieved at a nominal shaft speed of 2500 rpm, where the electromagnetic system produces 1.91 N·m of torque. To reach this operating point, the drive must supply a phase current of 7.4 A against an armature back EMF that corresponds to a terminal voltage of 80 V. The torque constant is 0.286 N·m/A, linking the applied current to the resulting torque so the controller can produce the nominal torque without saturation. A winding resistance of 0.53 Ω determines copper losses, while the 0.86 mH inductance influences current-loop bandwidth and limits ripple.
The windings can drive the rotor to a maximum velocity of 3000 rpm, providing additional speed for brief acceleration demands. The magnetic circuit can withstand a peak stall torque of 16.7 N·m for brief periods without demagnetization. Continuous holding torque is lower at 2.16 N·m, which is relevant when sizing vertical axes or static loads. The drive must overcome a rotor inertia of only 6.0 ×10⁻⁴ kg·m², supporting rapid starts and stops. A line-driver encoder with 2,000 pulses per revolution provides differential signals for noise-resistant position feedback. The motor has a mass of 4.25 kg, which supports heat dissipation while keeping the moving weight moderate.
