8LSA46.EA045D000-0 by B & R Automation

The 8LSA46.EA045D000-0 is a three-phase synchronous motor produced by B&R Automation within the 8LS Synchronous Motors series. It serves as a servo actuator for packaging lines, assembly cells, and other position-controlled axes where stable torque and accurate speed control are required. In the 8LSA configuration, the unit is supplied without reinforced bearings and mounts to machinery through a dedicated flange, allowing the rotor to be integrated directly into compact mechanical frames. This layout supports precise motion control in installations where space is limited around the drive axis.

This model reaches a rated speed of 4500 rpm, allowing fast indexing cycles while maintaining controlled motion. Heat is removed by self-cooling through free air circulation, so no external fan or liquid circuit is required. Rotor position is monitored by an inductive EnDat feedback system that works with controllers using protocol version 2.1, which allows absolute position information to remain available after power loss. The flange face measures 100 mm, providing a standard mounting interface for gearheads or direct-drive stations. For applications that do not require multi-turn tracking, the encoder is set for single-turn operation, which keeps the feedback arrangement straightforward.

Cabling exits the stator through an angled swivel connector, which helps route wiring in tight cabinet spaces and allows the connector position to be adjusted. The motor uses a smooth shaft end, making it suitable for clamp couplings or interference-fit pulleys without a keyway. Encoder resolution is 19/0 bits, supporting fine position measurement for controlled motion tasks. No holding brake or oil seal is installed, and the motor has length code 6. Power and signal lines terminate on a single circular connector, which keeps the connection layout compact.