8LSA57.DB030S300-3 by B & R Automation

The 8LSA57.DB030S300-3 is a three-phase synchronous motor built by B&R Automation for the 8LS Synchronous Motors series. Its internal designation 8LSA indicates the standard configuration that omits a reinforced bearing, making it suitable for applications where low inertia is preferred over higher bearing load capacity. By interfacing directly with servo inverters, the motor supplies tightly regulated torque and speed for automated pick-and-place stations, indexing tables, and general motion axes in industrial production lines. This layout supports precise acceleration and repeatable stopping in compact automated equipment.

Mechanical speed capability reaches 3000 rpm, and thermal equilibrium is maintained by a self-cooling design that relies on free air circulation rather than forced ventilation. Power, feedback, and safety signals are routed through a single-cable solution; this hybrid lead mates to a locking connector mounted on the stator housing, simplifying wiring and reducing cabinet penetrations. Combining these functions in one cable also reduces the number of separate leads that must be routed through the machine. Position feedback is generated by an Inductive EnDat sensor that uses the EnDat 2.2 protocol, supplying absolute position data to the drive without auxiliary batteries. The motor length is coded as 7, which provides the axial space needed to support the rated torque.

A standard holding brake secures the load during power-off conditions, which is useful for axes that must remain in place when drive power is removed. The mounting interface follows a 142 mm square flange pattern for direct attachment to gearboxes or machine plates. Signal granularity is 19/12 bits for single-turn and multi-turn resolution, and multi-turn tracking extends to 4096 revs, allowing the controller to recover absolute position after extended downtime. The unit mounts to machinery through the supplied flange, and an external oil seal is not present, so the coupling area must remain dry. The shaft uses a key for torque transmission, the product is revision 3, and the connector hardware allows cable connection without opening the motor enclosure.