8LSN57.E0022D300-0 by B & R Automation

The 8LSN57.E0022D300-0 is a three-phase synchronous motor produced by B & R Automation within the 8LS Synchronous Motors series. It is intended for servo axes that demand precise torque and speed control in automated machinery. An integrated mounting flange simplifies frame assembly and alignment, and this mounting style helps the motor fit neatly onto machine structures.

This model has a flange outer dimension of 142 mm, which sets the bolt pattern for direct coupling to gearboxes or machine plates. Its nominal mechanical output reaches 2200 rpm, allowing moderate-speed positioning without additional gear reduction. Feedback is supplied by an optical EnDat encoder, and revision 2.1 supports bidirectional parameter exchange between the drive and control system for fine calibration. Thermal balance relies on a self-cooling design, and the increased rotor inertia helps smooth speed ripple during load changes. Electrical terminations exit through an angled swivel connector so cable strain can be directed away from moving assemblies and nearby hardware.

A standard holding brake is fitted to secure the shaft during power-off conditions, preventing axis drift on vertical or suspended loads. Position feedback resolution is 13/0 single-turn/multi-turn bits, which supports tight servo loops and confirms absolute position within one revolution after restart. The power and signal plugs share the same angled swivel orientation to ease routing inside enclosures and keep the connection direction consistent. A shaft end machined with a key enables positive torque transfer into standard couplings, and the absence of an oil seal reduces radial drag for applications that do not require fluid exclusion. Length code 7 and the standard configuration complete the mechanical layout for this motor version.