8LSA56.E0045D200-0 by B & R Automation

The 8LSA56.E0045D200-0 is a three-phase synchronous motor produced by B & R Automation and assigned to the 8LS Synchronous Motors series. The unit serves as a rotary actuator in industrial automation, supplying precisely commutated torque for servo axes that require high repeatability and electronic feedback control. By integrating the motor, encoder, and brake in one package, it reduces component count inside machine cells while keeping installation straightforward. It is suitable for machinery that depends on repeatable starts, stops, and speed changes during automated motion sequences.

Continuous operation at a rated speed of 4500 rpm allows the shaft to support fast cycle requirements in packaging, handling, or printing lines. A flange dimension of 142 mm sets the mounting interface and centers the stator on machine frames. Rotor position is captured with an Optical EnDat measuring system, and the communication protocol uses version 2.1 for bidirectional data exchange with compatible B & R servo drives. Cooling is provided by self-cooling with free air circulation, so the housing releases heat without auxiliary fans or liquid jackets. This cooling method keeps the exterior layout simple and leaves more space around the axis for cables and adjacent components. When power is removed, a standard holding brake locks the rotor to help keep vertical loads or index tables in position until the drive is re-energized.

Mechanical coupling is simplified by a smooth shaft that mates with clamped hubs and avoids keyway-related stress concentrations. The feedback system uses single-turn position detection, so it records one mechanical revolution with 13 single-turn bits and does not provide multi-turn counting. Final attachment uses a mounting flange that supports the motor's length code 6 stator without auxiliary brackets. A clamped hub also helps maintain accurate concentricity where precise shaft alignment is important. The flange-based installation supports rigid mounting on machine plates or gear interfaces.