Product Description:

The R2AA13120LXP40 is a medium-inertia AC servo motor manufactured by Sanyo Denki as a member of the R SANMOTION Servo Motors series. In automated machinery, the unit converts electrical commands from a drive into precise shaft movement, supporting positioning or speed regulation in packaging lines, semiconductor tools, and general motion axes. Its integrated battery-backed absolute encoder reports the shaft angle even after power loss, allowing controllers to resume operation without homing.

At a rated output of 1.2 kW, the motor delivers mechanical power suited to medium-capacity axes powered by a three-phase 200 V bus. During continuous operation, it produces 5.7 N·m of torque at a nominal speed of 2000 rpm. For static holding or low-speed tasks, the continuous stall torque rises to 6.0 N·m. Position feedback is provided by a battery-backed absolute encoder with a single-turn resolution of 131072 divisions per revolution and a multi-turn capacity of 65536 revolutions, so the controller can track fractional angles across many revolutions without external sensors. The 130 mm square flange aligns with standard gearheads and brackets, simplifying mechanical integration into existing frames.

The rotor moment of inertia is 0.0006 kg·m², balancing acceleration response with the load stability typical of the series’ medium-inertia class. During assembly, the shaft can withstand radial loads of up to 1700 N from belt tensioning, pulley overhangs, or couplings. It can also withstand assembly thrust loads of up to 1900 N. Once the axis is in service, allowable dynamic loads decrease to 640 N radially and 490 N axially to protect the bearings. Because the motor does not have a holding brake, the drive must provide holding torque or an external clamp must secure vertical loads when power is removed.