8LSA55.DB045D000-3 B & R Automation
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The B & R Automation 8LSA55.DB045D000-3 is a three-phase synchronous motor from the 8LS Synchronous Motors series. It features a flange dimension of 142 mm, a rated speed of 4500 rpm, and uses an inductive EnDat encoder with 19-bit single-turn and 12-bit multi-turn resolution. The motor is self-cooling with a smooth shaft and an angled connector for electrical connection.
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Product Description:
The 8LSA55.DB045D000-3 is a servo motor produced by B&R Automation as part of the 8LS Synchronous Motors series. Its 8LSA designation places it in the standard build subgroup without reinforced bearings. In industrial automation, this motor connects to digital drives and converts electrical power into controlled mechanical torque for indexing tables, packaging shafts, and other precision motion axes. The motor supports accurate speed and position regulation when paired with a compatible controller and feedback interface.
The stator uses a three-phase synchronous topology, enabling consistent torque production throughout the regulated speed range. Under nominal operating conditions, the shaft can reach a rated speed of 4500 rpm. The mechanical interface has a square flange with a face measuring 142 mm, allowing direct attachment to compatible gearboxes or machine frames. Position data is generated by an inductive EnDat sensor that uses protocol version 2.2 to transmit absolute position values to the drive. The sensor provides a resolution of 19/12 bits for single-turn and multi-turn tracking, supporting precise closed-loop motion. This feedback arrangement allows the controller to monitor rotor position without relying on a separate external measuring system.
Thermal management uses self-cooling with free air circulation, so unobstructed airflow around the housing removes heat without an external fan. Power and feedback cables use an angled swivel exit, which allows their routing direction to be adjusted inside compact machine spaces. An electrical connector is supplied instead of fixed leads, simplifying cable attachment and disconnection during installation or maintenance. Multi-turn capability extends to 4096 revolutions, allowing absolute position information to remain available after a power interruption. The product is issued as revision 3, reflecting its production revision within the range. The motor also has a smooth shaft end, a mounting flange, and length code 5. It is supplied without a holding brake or oil seal, so stationary load retention and additional shaft sealing must be provided elsewhere in the machine when the application requires them.
