T840-012E59
by Sanyo Denki
The T840-012E59 servo motor from Sanyo Denki is a high-performance solution in the T SANMOTION Servo Motors series designed for versatile industrial automation tasks. This motor delivers a rated output of 400 W at a rated armature voltage of 85 V and achieves a rated torque of 1.57 N·m, enabling smooth, continuous operation under standard conditions. With a rated rotating speed of 2500 min⁻¹ and a maximum rotating speed of 4000 min⁻¹, the T840-012E59 provides the dynamic range needed for precision motion control. The motor model T840-012 variant features a continuous stall torque of 1.70 N·m and an instantaneous maximum stall torque of 12.0 N·m, ensuring reliable holding performance during intermittent load conditions. At a weight of 3.4 kg and with its integrated keyway shaft design, this motor combines compact form factor and ease of mechanical integration.
Performance is enhanced through carefully calibrated electrical and mechanical parameters. The motor’s electrical time constant of 2.0 ms and mechanical time constant of 5.2 ms work in tandem to deliver prompt responsiveness to control inputs. A friction torque of 0.06 N·m ensures minimal internal resistance, while the instantaneous maximum armature current of 40 A supports rapid torque output during acceleration phases. The rated armature current of 5.8 A and stall armature current of 6.0 A define stable current draw under normal and locked-rotor conditions, respectively. Precision feedback is provided by the incremental encoder with 1000 P/R line driver output, enabling tight position control and repeatability. Collectively, these characteristics yield a servo motor capable of handling variable loads with consistent torque delivery and minimal overshoot.
Designed for dependable operation in standard industrial environments, the T840-012E59 is rated IP43 for protection against solid objects and light spray, though it requires additional sealing for harsh conditions with oil or heavy moisture. Operating within an ambient temperature range of 0 to 40°C, this motor maintains performance stability across typical factory settings. Integration is simplified by the pre-installed 1000 mm lead wire, which facilitates straightforward wiring without the need for specialized connectors. The robust keyway shaft allows secure mounting of couplings, pulleys, and gears, reducing the risk of slippage during high-torque cycles. Ideal for applications in CNC machinery, pick-and-place systems, robotics, and conveyor drives, the T840-012E59 delivers a reliable balance of speed, precision, and torque for diverse industrial automation demands.
