Product Description:

The QSY112C-030-HG3-AN is a permanent-magnet synchronous servo motor manufactured by Bosch Rexroth Indramat for the QSY Synchronous Servo Motors series. The unit converts electrical input from a matched drive into regulated mechanical rotation for positioning and velocity control in automated packaging lines, gantry axes, and machine-tool spindles. Its laminated stator core, rare-earth rotor magnets, and digital feedback interface allow tight speed loops and repeatable motion profiles within multi-axis industrial platforms.

At the continuous operating point, the motor delivers 3.8 kW of shaft power while turning at a rated speed of 3000 rpm. This corresponds to a continuous torque of 12.0 Nm when the inverter supplies a phase current of 8.5 A. The winding set is optimized for a line-to-line voltage of 336 V, making it compatible with the output of Rexroth converter racks without step-up transformers. These nominal values keep the magnetic circuit unsaturated, support the expected bearing life, and hold the surface temperature within the insulation class limits. If the shaft is prevented from rotating, the controller may momentarily apply 31.3 A of stall current so the motor can resist static loads until motion resumes, provided thermal monitoring is active.

For rapid acceleration, the drive can inject a peak winding current of 121.5 A, generating an instantaneous torque of 148.0 Nm to overcome inertia or process shocks. A continuous stall capability of 44.0 Nm supports vertical axes that must hold their position without mechanical brakes. The rotor has 4 pole pairs, balancing high dynamic response with smooth low-speed behavior and reducing cogging error during precision interpolation. Peak current should be limited to brief acceleration events to prevent excessive winding heat during repeated motion cycles. The available stall torque can also resist stationary loads when the connected drive provides appropriate current regulation and active thermal protection.