8LSAA4.D9045S000-3
The 8LSAA4.D9045S000-3 belongs to the 8LS Synchronous Motors series manufactured by B & R Automation. It is a compact servo motor intended for precision axis control in automated assembly cells, packaging machines, and material-handling stages where coordinated motion and repeatable positioning are required. The motor is a three-phase synchronous machine, making it suitable for closed-loop applications that depend on stable torque response and accurate speed regulation. Its compact format also fits machine sections where installation space is limited but controlled motion is still required.
This model delivers a rated shaft speed of 4500 rpm, which supports fast indexing and high-speed axis movement. Mechanical interfacing is handled through a 70 mm square flange and a smooth shaft, so coupler alignment remains straightforward in compact drive arrangements. The 8LSA configuration uses a standard bearing set without reinforcement, and length code 4 gives the stack height used for the required torque density. A mounting flange is provided and wiring terminates through a connector, so installation does not require custom adapters. The unit comes without a holding brake, and the shaft does not include an oil seal, so external holding or sealing must be added if the application requires those functions. Product Revision 3 is the current electrical and mechanical release level for this version.
Position feedback is generated by an Inductive EnDat encoder that uses protocol revision 2.2. The interface provides 19/12 bits of single-turn and multi-turn resolution and supports multi-turn operation over 4096 revolutions, allowing absolute position tracking after power loss. Thermal management relies on self-cooling with free air circulation, so no external blower or liquid jacket is required for normal operation. Power, signal, and encoder functions are combined through a single-cable hybrid connection, which reduces the number of separate leads that must be routed through the machine. This cable arrangement helps keep moving harnesses simpler in axes that use compact dress packs or cable guides.
