8LSA74.EB030D000-0 by B & R Automation

The 8LSA74.EB030D000-0 is a three-phase synchronous motor manufactured by B&R Automation as part of the 8LS Synchronous Motors series. Serving as the electromechanical link between an inverter and a mechanical load, it converts controlled AC power into precise torque and speed for packaging lines, pick-and-place modules, and similar automated stations. Supplied in the 8LSA standard configuration without reinforced bearings, the unit integrates easily with servo drives that recognize digital EnDat feedback and supports accurate positioning duties under moderate radial loads.

The motor mounts through a flange with a face dimension of 190 mm, giving a fixed reference plane for coaxial alignment with gear reducers or pulleys. Thermal management relies on self-cooling by free circulation, so ambient airflow along the housing removes stator losses without external fans or liquid jackets. Rotor position is reported by an Inductive EnDat sensor, and communication uses version 2.1, enabling bidirectional digital exchange of position data, diagnostics, and electronic nameplate information over one cable. Under nominal excitation, the shaft reaches 3000 rpm, and the encoder provides 19-bit single-turn and 12-bit multi-turn resolution for fine velocity and position control.

For cabinet wiring, the power and signal leads exit through an angled swivel housing, and the mating plug is a connector. The shaft interface is a smooth shaft, permitting backlash-free clamping couplings when precise torsional rigidity is needed. Absolute position data is retained across power cycles by the encoder's multi-turn capability of 4096 revolutions, eliminating the need for external homing sensors. This length-code 4 motor is delivered without a holding brake and without an oil seal, so external mechanisms must handle static load retention and fluid exclusion where required.