Product Description

The Bosch Rexroth SD-B5.250.030-14.000 is a versatile permanent-field servomotor that is cooled by natural convection and thermal radiation. The flange of the motor is located at its driving end. The basic construction style of the product is IM B5. The device cannot be customized. The motor should always be used with a compatible inverter, and it cannot be operated alone. The user might experience burns if the motor is touched during or immediately after its operation. A touch guard should be attached if necessary. Radial and axial forces act on the motor’s shaft when it is in use. The unit does not support the IM V1 vertical mounting orientation.

The SD motor has a winding resistance of 0.28 Ohm. The winding inductance of the unit is 5.3 mH. The electrical time constant of the motor at 20°C is 18.8 ms, and its mechanical time constant at 20°C is 5.1 ms. The unit has a thermal time constant of 140 minutes. The motor has an NTC thermistor for monitoring its temperature. The thermistor is positioned in the windings of the device. The user should not dismantle the product but can dismantle the tacho board. The unit does not come with mating connectors. They should be ordered separately. The device needs at least one supply module to function.

The connection between the inverter and the SD motor is done on the motor side via plug-in connectors. When the ambient operating temperature of the device is exceeded, it tends to deliver reduced output. There is a type label attached to the motor’s housing. It carries technical details like rotor inertia, standstill current, standstill torque, protection class, and so on.