8LSA57.E3045D200-0
The 8LSA57.E3045D200-0 is an AC servo motor manufactured by B&R Automation as part of the 8LS Synchronous Motors series. It provides the rotary actuation required for positioning or speed-controlled axes, converting electrical power into mechanical torque for conveyors, pick-and-place gantries, and other automated machinery. When used with a compatible servo controller, it supports repeatable start-stop motion and stable speed regulation across changing loads. High rotational accuracy and compact dimensions make it suitable for tight installation spaces in modern industrial control systems.
The motor’s maximum mechanical velocity is 4500 rpm, allowing rapid traverse cycles without exceeding rotor stress limits. A flange diameter of 142 mm provides a stable interface for precise alignment to gearboxes or direct-drive loads. Internal heat is removed by self-cooling through free circulation, so no auxiliary fan or liquid circuit is required as long as ambient air can move around the housing. Cables exit through an angled swivel port, and the factory-installed connector eliminates open-lead terminations. The motor does not include an oil seal, so the shaft interface should be protected from contaminant splash, and the mounting flange with length code 7 sets the overall stack height and envelope.
A standard holding brake clamps the rotor when the inverter disables torque, helping the axis remain in position at standstill. Power transmission relies on a smooth shaft, which supports clamp or shrink-fit couplings without a keyway. The 8LSA configuration uses no reinforced bearing, so radial load capability matches typical servo duty rather than heavy pulley service. Its three-phase synchronous electromagnetic construction supports constant torque production per electrical cycle, enabling tight speed regulation when paired with compatible B&R ACOPOS drives.
