Product Description:

Bosch Rexroth Indramat manufactures the SG-A2.050.038-03.000 as a brushless servo motor in the SG Synchronous Servo Motors series. The unit drives rotary axes in automated machinery, where its resolver supplies rotor orientation and speed data to the drive controller. A basic IM B5 mounting interface allows direct flange installation, while vertical IM V1/V3 positions are also permitted for compact spindle layouts. The shaft includes a DIN 6885 keyway so torque can be transmitted to couplings without slipping. An integrated holding brake prevents load drift when power is removed, making the motor suitable for axes that must remain stationary during shutdown.

The motor reaches a nominal speed of 4300 rpm, giving sufficient headroom for fast positioning cycles in packaging or assembly equipment. A standstill current of 9.5 A represents the continuous phase draw when the rotor is locked and supports thermal sizing for the connected inverter. The standstill torque capability is 4.7 Nm, allowing the axis to support moderate loads without motion. A flange diameter of 100 mm matches standard machine interfaces and keeps alignment accuracy within the stated N-level tolerance. The integrated brake operates at 24 V DC ±10%, so a common low-voltage supply can control the holding function without an additional converter.

An enclosure rating of IP 65 blocks dust ingress and low-pressure water jets, enabling cabinet-free mounting near the working zone. The rotor uses SmCo magnets that maintain magnetic strength at elevated temperatures and reduce the risk of demagnetization. Continuous operation is permitted at ambient temperatures from 0 to 40 °C, covering most indoor production environments. Heat produced in the stator laminations is removed through thermal radiation and natural convection, eliminating the need for a forced-air cooling system. This passive cooling method also removes fan maintenance requirements and avoids adding auxiliary airflow equipment around the motor housing.