8LSA45.EA030D100-3 by B & R Automation

The 8LSA45.EA030D100-3 is a three-phase synchronous motor manufactured by B&R Automation and supplied within the 8LS Synchronous Motors series. In factory automation, this rotary actuator converts controlled electrical power from a servo drive into precise mechanical motion for positioning tasks on conveyors, pick-and-place heads, or indexing tables. It integrates into machine frames through a standardized mounting flange and delivers consistent torque at its rated operating speed.

The motor reaches a rated speed of 3000 rpm, allowing servo loops to execute rapid cycle times without magnetic slip. Thermal management relies on self-cooling with free air circulation, so external fans or liquid jackets are unnecessary when ambient airflow is adequate. Position feedback is produced by an Inductive EnDat sensor, and the communication protocol complies with version 2.1, enabling bidirectional transfer of position, diagnostics, and operating data to the controller. A flange dimension of 100 mm aligns with IEC sizing conventions and matches the centering pilot used to seat the motor on gearboxes or machine plates. Output torque is transmitted through a shaft end with a key, giving a positive mechanical interface to pulleys or couplings under reversing loads.

Signal accuracy is reinforced by a 19/0 bit resolution format that supplies 19 single-turn bits and no multi-turn data, which is suitable for short-range rotary axes that home at power-up. Wiring is simplified because the power and feedback conductors exit through an angled swivel connector housing that can be rotated to relieve cable strain inside compact enclosures. Mechanical length is identified by Length code 5, indicating the active stack height used for this model. The configuration suits applications that need the rated speed without the added mass of a reinforced bearing, a holding brake, or an oil seal.