8LSA57.DB030S000-3 by B & R Automation

The 8LSA57.DB030S000-3 motor is produced by B&R Automation and belongs to the 8LS Synchronous Motors series. It is a brushless servo unit intended to drive articulated arms, feeders, and other positioning axes that demand coordinated motion in industrial automation. By combining integrated feedback with optimized electromagnetic geometry, the unit delivers controllable torque and velocity, while its compact frame supports installation in tight machine spaces and other layouts where available mounting room is limited.

Internally, the motor uses a three-phase synchronous topology, enabling sinusoidal commutation up to 3000 rpm under rated conditions. Power, feedback, and brake conductors are routed through a single-cable hybrid solution, which reduces drag-chain space and simplifies wiring. Heat generated by copper losses is dispersed through a self-cooling, free-circulation housing, so external fans are unnecessary. Position data come from an inductive EnDat sensor that operates with protocol release 2.2. Mechanical attachment is provided by a 142 mm square mounting flange that mates with standardized gearheads. A keyed connector completes the electrical interface, and the suffix indicates product revision 3 in this motor version.

Auxiliary components are intentionally minimal. The motor has no holding brake, so position retention during power-off must rely on drive torque or an external clamp. The encoder supports multi-turn feedback over 4096 revolutions, and its resolution reaches 19/12 bits for single-turn and multi-turn data, giving precise homing without reference moves. A smooth shaft end simplifies coupling to precision hubs, and no oil seal is fitted, which suits clean environments. The standard 8LSA build also omits reinforced bearings, so high radial loads should be supported externally.