Product Description:

The KA730JXX is a brush-type servo motor manufactured by Sanyo Denki for the K SANMOTION Servo Motors series. Intended for industrial automation axes that require precise velocity and position regulation, the unit converts controlled DC power into accurate rotary motion and provides feedback to a drive for closed-loop control. Its 76 mm square housing supports compact installation in pick-and-place gantries, feeders, and indexing mechanisms where space is limited. The integrated electromechanical brake provides secure load retention when the motor is stopped or power is interrupted.

During continuous operation, the motor supplies a rated mechanical output of 300 W at a shaft speed of 2500 rpm. At this operating point, the motor produces a rated torque of 1.15 N·m. The armature circuit operates at 75 V, and the drive limits its current to 4.8 A. The armature resistance is 1.05 Ω, which affects copper loss, while the torque constant of 0.27 N·m/A relates current commands to shaft torque. The motor has a mass of 3.40 kg, helping keep the supported load on the mounting structure moderate. The permanent-magnet brake is released by 90 V ±10% and draws 0.11 A during operation, allowing it to secure the load when electrical power is removed.

Short-term acceleration is supported by a peak stall torque of 9.8 N·m, which is substantially higher than the continuous stall torque of 1.43 N·m. When motion stops, the brake can restrain the shaft with a static holding torque of 1.47 N·m, preventing back-driving on vertical or unbalanced loads. The rotor has an inertia of 2.7 × 10⁻⁴ kg·m², enabling rapid speed adjustments without excessive overshoot. The difference between the continuous and peak stall torque supports brief increases in load during acceleration. Controller gain settings should account for the available torque, rotor inertia, and connected load to maintain stable motion during acceleration, normal operation, and controlled stopping.