8LSAA4.ee045ffgg-3 by B & R Automation

The 8LSAA4.ee045ffgg-3 synchronous servo motor is built by B&R Automation and belongs to the 8LS Synchronous Motors series. This unit is engineered as a drive element in automated machinery, converting electrical energy into controlled rotary motion for positioning, conveying, or cutting tasks within industrial production lines. By combining permanent-magnet rotor technology with real-time drive electronics, it provides repeatable torque and speed so that motion sequences stay synchronized with higher-level controllers during repeated start-stop cycles and coordinated multi-axis movement.

This motor reaches a rated velocity of 4500 rpm, which is the maximum continuous shaft speed under nominal load and voltage. Its electromagnetic topology uses a three-phase synchronous design, so torque is generated by three evenly spaced stator windings that track the controller's sinusoidal current commands. Power, feedback, and brake leads terminate through a single connector, which avoids separate screw-terminal wiring and keeps the cable interface compact. The housing attaches through a dedicated mounting flange, and this interface keeps the stator concentric with other mechanical components during axial alignment. The front face conforms to a 70 mm square flange dimension so that the motor fits gearboxes, pulleys, or direct-drive fixtures that use the same footprint on compact servo axes.

Thermal management uses self-cooling by free circulation, so ambient airflow removes heat without external blowers or liquid jackets and keeps winding temperature within permissible limits during normal operation. Within the 8LS naming system, the designation 8LSA identifies the construction variant, while length code 4 indicates the stack height and corresponding magnetic core volume. Product revision 3 identifies the revision level of the motor and does not change its basic form or mounting arrangement, which helps keep mechanical integration consistent within this model.