8LSA54.R0045D000-0 by B & R Automation

The 8LSA54.R0045D000-0 is a three-phase synchronous motor manufactured by B&R Automation and assigned to the 8LS Synchronous Motors series. Within automated machinery, it converts drive inverter output into controlled mechanical rotation for axes that demand accurate speed and position response. Its compact 8LSA mechanical format lets machine builders mount the unit directly on a machine frame while maintaining the electrical continuity expected in fast-cycle packaging, handling, and assembly cells.

The motor reaches a rated speed of 4500 rpm, allowing high-throughput motion profiles without overspeeding the resolver feedback system. Positional repeatability is supported by a precision window of 10 arcmin, which helps limit cumulative error during indexing cycles. A flange dimension of 142 mm provides the mounting interface used when bolting the motor to gearboxes or direct-drive loads. Rotor position is reported by a Resolver, a sensor suited for environments where vibration or electrical noise could disturb digital encoders. Thermal management relies on self-cooling through free circulation, so ambient air moving along the housing removes heat without external blowers or liquid jackets.

Power and feedback conductors exit through an angled swivel connector, and the mating end uses a keyed connector so wiring can be detached without opening the enclosure. The stack depth identified by length code 4 balances torque capacity with a small footprint, while the drive side terminates in a smooth shaft that accepts clamp or press-fit couplings. The 8LSA standard configuration omits reinforced bearings and is supplied without a holding brake or an oil seal, so external load locking or environmental barriers may be required in some installations. Axial forces are absorbed by the mounting flange that anchors the stator and preserves the feedback sensor air gap inside the housing.