8LSA45.ea045d000-0 by B & R Automation

The 8LSA45.ea045d000-0 is an AC servo motor developed by B&R Automation and supplied within the 8LS Synchronous Motors series. It drives rotational axes in automated production cells, where consistent speed regulation and repeatable positioning are required for pick-and-place systems, packaging equipment, and other motion tasks. By converting three-phase electrical power into mechanical torque, the unit supports closed-loop control strategies implemented by matching drive controllers. This operating role suits machines that need smooth acceleration, repeatable stops, and stable motion during frequent cycle changes.

The motor's rated shaft velocity is 4500 rpm, which is the maximum continuous operating speed under nominal load. The housing uses self-cooling by free circulation, so natural airflow around the stator removes the need for auxiliary fans and extra wiring. Power and feedback circuits terminate on a single connector, which keeps wiring consolidated while maintaining enclosure integrity. This layout also helps reduce cable clutter around the motor body. Internally, the winding scheme is optimized for three-phase synchronous operation, so rotor position stays locked to the rotating field for precise servo action. Machine interface dimensions follow the 100 mm square flange pattern, permitting direct coupling to standard gearboxes, couplings, or frames.

The motor uses a mounting flange, which provides a straightforward face-mount option without secondary brackets. The standard variant without a reinforced bearing uses the basic bearing set intended for moderate radial loading rather than high thrust applications. The motor has length code 5, which indicates the active stack length used for its torque output and overall size. The internal product designation is 8LSA, which identifies the motor family used with compatible cabling and feedback devices. The bearing arrangement and flange layout suit compact servo axes where direct face mounting is preferred.