8LSA57.E3045D200-0 by B & R Automation

The 8LSA57.E3045D200-0 is a three-phase synchronous motor manufactured by B&R Automation for the 8LS Synchronous Motors series. In industrial automation, it operates as a servo actuator, taking commanded current from a matched inverter and converting it into accurate rotary motion for conveyors, gantry axes, and indexing stations. The motor's electrical design targets high dynamic response, while the mechanical form factor aligns with standard IEC flange dimensions so builders can integrate it into new or retrofit machinery without custom brackets.

The internal designation 8LSA identifies the standard variant within the family. A rated speed of 4500 rpm supports short cycle times and precise velocity control when paired with high-frequency current loops. Heat is dissipated by self-cooling through free circulation, which relies on natural airflow around the stator housing and eliminates auxiliary fans. Cable management is simplified because power and feedback exit through an angled swivel connector, reducing bending stress inside moving-cable chains. For load holding during emergency stops, the unit incorporates a standard holding brake that clamps automatically when the drive removes excitation.

The square flange measures 142 mm across and provides the centering pilot needed for repeatable axial alignment. A precision-machined smooth shaft allows direct coupling with clamping hubs or shrink disks and avoids the stress risers associated with keyways. Installation occurs through the integral mounting flange, keeping the housing compact and preventing misalignment that can arise with foot mounts. Because the configuration is supplied without a reinforced bearing, radial and axial loads must stay within the published limits. This helps minimize bearing friction and preserve the motor's dynamic performance during rapid reversals.