8LSA46.DB045D300-3 by B & R Automation

The 8LSA46.DB045D300-3 is a three-phase synchronous motor produced by B & R Automation within the 8LS Synchronous Motors series. As an electromechanical axis, it converts drive controller output into rotary motion for automated packaging lines, pick-and-place modules, and other motion assemblies. The A designation in the type code indicates the standard 8LSA configuration without a reinforced bearing, while the mounting flange allows straightforward integration into a machine frame.

At its rated speed of 4500 rpm, the rotor sustains continuous operation without external fans because the housing follows a self-cooling with free circulation principle; ambient air moves along the surface and removes heat. A 100 mm square flange sets the machine interface dimension. Position feedback is delivered by an Inductive EnDat sensor running protocol version 2.2, giving noise-tolerant analog pickup with digital transmission to the servo drive. The angled swivel cable outlet aligns with the connector body so the power and signal conductors exit sideways, which helps reduce required cabinet depth. A keyed shaft end transfers torque directly to pulleys or couplings, and the standard connector supports straightforward cable connection without opening the motor housing.

The integrated standard holding brake secures the load when power is removed, which is useful on vertical axes. Feedback precision reaches 19/12 bit resolution, and the encoder tracks multi-turn 4096 revolutions, so absolute position is retained across power cycles without battery support. Because no oil seal is fitted, the housing should not be exposed to pressurized lubricants. The length-code 6 stator stack gives the motor a moderate inertia level. Mechanical alignment relies on the keyed shaft, and configuration 8LSA does not include a reinforced bearing. The motor described is revision 3, matching the current wiring, encoder, and mechanical interfaces used in this series.