8LSA46.R2045D200-3 by B & R Automation

The 8LSA46.R2045D200-3 is a three-phase synchronous motor manufactured by B&R Automation within the 8LS Synchronous Motors series. Classified under the 8LSA configuration, it uses a standard bearing arrangement and is supplied without reinforcement. The unit serves as an electromechanical actuator for industrial automation, driving coordinated axes in packaging machines, pick-and-place gantries, and other motion platforms that need closed-loop torque and speed control. Designed for direct connection to 400 V-class servo amplifiers, the motor integrates feedback electronics and power terminals into a compact housing that attaches through a dedicated mounting flange.

This model reaches a rated speed of 4500 rpm, allowing direct coupling to moderate-speed gear stages without overspeed. A flange dimension of 100 mm sets the mounting interface and aligns the stator face with standardized machine frames. Position feedback is supplied by a resolver, providing rotor angle feedback across the operating range. Fine motion repeatability is supported by a precision rating of 6 arcmin, which helps limit cumulative error in multi-axis assemblies. The motor uses length code 6, which indicates the active stack height and the related continuous torque curve.

Power and feedback leads exit through an angled swivel connector, a layout that reduces cable bend stress in tight enclosures and supports cleaner routing near the motor housing. Heat is removed by self-cooling with free circulation, so no external blower is needed during normal operation. For vertical axes, the integrated standard holding brake secures the load when drive power is absent. A smooth shaft simplifies coupling with clamping hubs, and because no oil seal is fitted, the motor is intended for dry zones or sealed gearboxes where leakage protection is handled elsewhere.