U730BNT-012E
by Sanyo Denki
The U730BNT-012E from Sanyo Denki represents a premium offering in the Super DC Servo Motors series, delivering precision motion control for demanding industrial applications. This compact DC servo motor provides a rated output of 300 W and generates a continuous rated torque of 1.18 Nm while weighing just 2.5 kg, balancing power density with ease of installation. Featuring a rated rotating speed of 2500 rpm and a maximum top speed of 4000 rpm, the U730BNT-012E is engineered for both sustained operation and rapid dynamic response. With a nominal armature voltage of 75 V, it seamlessly integrates into mid-voltage automation systems and drives performance without compromise. Its combination of power, torque, and lightweight construction makes it an ideal choice for precision machinery, robotics, and automated assembly lines.
The technical architecture of the U730BNT-012E DC servo motor is built around a finely tuned electromagnetic assembly that optimizes efficiency and response. The armature inductance of 1.6 mH and armature winding resistance of 1.1 Ω are calibrated to ensure stable current flow and minimal electrical losses. A torque constant of 0.273 Nm/A provides predictable torque output per ampere, while a rated armature current of 5.2 A and a stall armature current of 5.5 A guarantee reliable performance under steady-state and stall conditions. The rotor’s moment of inertia, measured at 0.0002 kg·m², enhances acceleration dynamics, enabling agile start-stop operations. For peak demands, the motor can produce an instantaneous maximum torque of 9.8 Nm with an instantaneous maximum armature current of 40 A, supporting high-load transients and rapid positioning tasks.
Operational reliability and longevity are hallmarks of the U730BNT-012E design. A continuous stall torque rating of 1.43 Nm provides a safety margin against overload, protecting drive components during unexpected load spikes. Thermal management is governed by an effective thermal resistance of 1.5 °C/W, allowing the motor to dissipate heat efficiently and maintain optimal temperature under continuous use. The motor’s construction ensures minimal vibration and noise, enhancing precision and reducing wear on bearings and mechanical couplings. With a peak efficiency of 87% at 200 W output, the U730BNT-012E minimizes energy consumption while maintaining stable torque delivery, resulting in lower operating costs and reduced downtime.
Integration of the U730BNT-012E into existing automation platforms is straightforward, thanks to its standardized mounting footprint and industry-compatible electrical interfaces. The 75 V armature connection aligns with common industrial power buses and servo drives, simplifying system architecture. Its compact dimensions and lightweight design facilitate retrofitting into constrained spaces without extensive mechanical redesign. Ideal for robotic joints, pick-and-place mechanisms, CNC tooling, and conveyor systems, the U730BNT-012E delivers precise motion control and high dynamic performance to elevate productivity across a wide range of industrial automation applications.
