8LSN55.E3030D200-0 by B & R Automation

The 8LSN55.E3030D200-0 is a three-phase synchronous servo motor produced by B&R Automation and assigned to the 8LS Synchronous Motors series. Within industrial automation, this motor supplies regulated torque for coordinated motion tasks such as pick-and-place heads, gantry drives, and feed axes where accurate speed following is required. Its servo design supports repeatable motion control in equipment that must accelerate, position, and settle without excessive error during cyclic operation.

The motor is classified as a three-phase synchronous unit, so the stator winding currents remain locked in step with rotor position for constant torque delivery at variable frequencies. Under rated conditions, it reaches 3000 rpm, a speed that balances dynamic response with stable running in mid-power machinery. Its flange dimension is 142 mm, matching common IEC mounting patterns used on similarly sized actuators. Power and feedback leads exit through an angled swivel connector, allowing cable loops to stay close to moving machine frames. Heat is removed through a self-cooling housing, so no forced air or liquid jacket is required.

The stator housing is supplied with a mounting flange, letting the motor bolt directly to machine plates or gearboxes. A standard holding brake keeps the shaft locked when power is off, which helps prevent drift on vertical or indexed loads. For applications that rely on external sealing measures, the oil seal is not present, reducing shaft friction where the surrounding machine already provides protection. The motor ships in a standard configuration that follows the 8LSN designation and uses Length Code 5 for an extended stack that supports higher continuous torque. A smooth shaft end also supports coupling to compliant clamping hubs and avoids key-seat stress concentrations.