Product Description:

The QSY112D-027-HG3-BN is a synchronous servo motor produced by Bosch Rexroth Indramat for the QSY Synchronous Servo Motors series. It is intended to drive axes that require precise velocity and torque regulation in automated machinery such as packaging stations, metal-cutting centers, or material-handling gantries. Integrated thermal design allows the motor to sustain continuous operation while the control system modulates current to match commanded motion profiles.

This model delivers a continuous mechanical output of 12.0 kW at the rated operating point of 2000 rpm. At that point, the shaft supplies 57.1 Nm of torque while drawing 23.4 A from a 328 V DC link. To maintain internal temperature, an auxiliary fan runs on 230 V and draws only 0.3 A, and its leads terminate in a 3 × 1 mm² cable. Power conductors are routed through a 4 × 10 mm² plus 2 × 1 mm² composite cable that plugs into an 11-pin flange socket on the stator housing. The motor contains four pole pairs, so the electrical frequency seen by the windings is proportional to commanded mechanical speed. In applications that require extended dwell or low-speed holding, the motor can remain energized at a stall current of 33.3 A without exceeding the 100 K winding temperature rise.

Dynamic moves are supported by a peak shaft capability of 185.0 Nm for up to 200 ms, and a transient electrical ceiling of 100 A over the same interval. When motion is halted, a standstill resisting torque of 72.0 Nm prevents load back-drive until the drive issues the next command. The design, identified by 4 pole pairs, balances high torque density with smooth commutation, which helps stabilize current control. Control cabinets can use separate terminal blocks for the fan and power cables, keeping the wiring layout organized while matching the stated conductor sizes and connector style.