L720T-012EL8
by Sanyo Denki
The Sanyo Denki L720T-012EL8 is a precision servo motor in the Super DC Servo Motors series, designed to deliver reliable performance in compact industrial automation environments. Manufactured by Sanyo Denki, this actuator provides a rated output of 39 W and a rated torque of 0.11 Nxm while weighing only 0.55 kg, making it ideal for systems where size and weight are critical constraints. Its rated armature voltage of 72 V supports high-energy efficiency and seamless integration with standard DC power supplies. Engineered for durability, the L720T-012EL8 excels in demanding industrial conditions, offering consistent operation and long service life.
The motor’s technical specifications reinforce its suitability for advanced automation. The armature resistance of 16.2 Ω and electrical time constant of 0.26 ms enable swift electrical response and minimized current lag. With an induced voltage constant of 18.2 mV/min^-1 and a mechanical time constant of 4.5 ms, the device achieves precise motion control and rapid torque stabilization. It operates at a rated revolving speed of 3000 min^-1 under a rated armature current of 0.82 A, maintaining optimal thermal balance. Additionally, a torque constant of 0.174 Nxm/A ensures linear torque production proportional to current, simplifying control algorithms.
Operationally, the L720T-012EL8 excels in dynamic performance and surge handling. Its momentary max stall current of 2.0 A and momentary max stall torque of 0.323 Nxm afford robust transient load management during startup and sudden braking. The low rotor inertia and compact design yield fast acceleration and deceleration cycles, enhancing throughput in high-speed applications. Consistent torque output under varying loads minimizes positional error in feedback-controlled systems, contributing to repeatable accuracy. These performance characteristics support precision tasks in automation lines and robotic end-effectors.
System integration is streamlined through standard power and control interfaces, facilitating deployment in industrial automation, pick-and-place machinery, and small-scale CNC systems. The L720T-012EL8’s compact footprint and lightweight construction reduce mounting constraints and mechanical inertia in multi-axis assemblies. Combined with Sanyo Denki’s drive controllers, this servo motor provides closed-loop feedback capabilities and programmable tuning for optimized motion profiles. It is particularly suited to applications demanding rapid response, energy efficiency, and dependable operation in modern manufacturing environments.
