The Mitsubishi HG-KR73J is a low inertia small capacity servo motor rated at 0.75 kW output, 3000 r/min, on a 200 V supply. That 0.75 kW rating places it in the range for small-axis positioning — pick-and-place arms, conveyor indexing, or rotary table drives where fast acceleration matters more than raw torque. The low inertia rotor means it reaches speed quickly and stops without overshoot, which keeps cycle times tight on a pick-and-place line.
No electromagnetic brake is fitted on this variant. That means the load must hold position through the drive's holding torque at standstill or an external mechanical brake. For vertical-axis applications — a Z-axis lift or a gantry with a raised load — you will need to add a brake motor or a separate holding brake on the mechanical side. The oil seal is listed as incidental per Notes 1–3, so the motor is splash-protected but not rated for continuous oil immersion; mount it where coolant splash is occasional, not submerged.