8LSAA2.D9045S300-3 by B & R Automation

The 8LSAA2.D9045S300-3 is a rotary drive element manufactured by B&R Automation within the 8LS Synchronous Motors series. Installed in automated packaging, assembly, and conveying stations, the unit translates electrical energy from the servo amplifier into precise mechanical motion. Its permanent-magnet three-phase construction provides the dynamic response required for indexing axes while remaining compact enough for direct integration on machine frames.

The motor uses a single-cable hybrid solution, so power conductors and encoder signals share one shielded line that terminates in a connector, simplifying routing through cable tracks. Windings follow a three-phase arrangement and are cooled by self-cooling through free air circulation; no external blower or liquid circuit is required. The interface is a mounting flange with a 70 mm locating pilot, and length code 2 indicates the stator stack depth. The 8LSA configuration uses standard bearings without reinforcement and indicates that an oil seal is not present. A keyed shaft end transfers torque to couplings, and nominal operation reaches 4500 rpm, enabling medium-speed positioning. Positional data originate from an integrated Inductive EnDat sensor that tolerates dust and moisture.

The encoder follows version 2.2 of the EnDat protocol and offers a resolution of 19/12 bits for single-turn and multi-turn tracking. It counts up to 4096 revs without battery assistance. A standard holding brake secures the shaft at zero power, which is useful on vertical axes. Product revision 3 identifies the current motor revision, and the 8LSA designation places it within the standard dimensional format of the series. Because the bearing set is not reinforced, radial load capacity is intended for normal duty cycles, and the lower rotating mass supports rapid axis acceleration.