Product Description

The QSK061C-0300-NN-S5-UG1-NNNN is a popular QSK motor developed and commercialized by Rexroth Bosch Indramat under the IndraDyn S series. As a three-phase synchronous motor, this machine requires a DC excitation field for the rotor to match the moving magnetic field of the stator. The stator, on the other hand, requires a three-phase AC supply to generate the moving magnetic field. The QSK061C-0300-NN-S5-UG1-NNNN, in particular, operates at a wide supply range from 200 to 500 VAC. Depending on the applied three-phase supply for the stator, the machine’s output torque may vary. At optimal conditions, the QSK061C-0300-NN-S5-UG1-NNNN can achieve a maximum velocity of 4,200 rev/min.

At a temperature rise of 60 Kelvin, the QSK061C-0300-NN-S5-UG1-NNNN can maintain the following continuous stall values: 8 Nm and 4.3 A. On the other hand, when the temperature rise is allowed to reach 100 Kelvin, the motor can maintain the following continuous stall parameters: 9 Nm and 4.8 A. For a brief period of time, however, the QSK061C-0300-NN-S5-UG1-NNNN can operate safely at a peak current of 19.4 A or a peak torque of 32 Nm. At 20 degrees Celsius, the machine’s winding has a resistance of 4.5 ohms. For simulation and characterization purposes, the winding resistance and inductance can be used to obtain the motor impedance.

With a compact body frame, the QSK061C-0300-NN-S5-UG1-NNNN requires less cooling time. Rexroth’s documentation identifies the machine’s thermal time constant to be 18 minutes. This thermal time constant indicates the amount of time needed by the motor to achieve 63% of its steady-state temperature. This constant may also be used to estimate the amount of time before the machine can safely be touched after continuous operation. For motors or generators, the safe cooling period is five times the thermal time constant.