8LSA57.S1045D200-1 B & R Automation
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The B & R Automation 8LSA57.S1045D200-1 is a three-phase synchronous motor in the 8LS Synchronous Motors series. It features self-cooling with free circulation and includes an optical EnDat 2.2 encoder with a multi-turn capability of 4096 revolutions. The motor has a flange dimension of 142 mm, a rated speed of 4500 rpm, and is equipped with a standard holding brake and an angled connector.
Internal Product Review
The 8LSA57.S1045D200-1 is a B & R Automation three-phase synchronous motor with self-cooling free circulation. Optical EnDat 2.2 feedback supports precise position control and dependable motion performance. The standard holding brake makes this motor a strong choice for demanding servo applications.
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Product Description:
The 8LSA57.S1045D200-1 is a three-phase synchronous motor produced by B&R Automation within the 8LS Synchronous Motors series. Installed by its mounting flange, it provides closed-loop motion for indexing tables, gantry axes, and other automated stations that require fast, repeatable positioning. Its standard mechanical build uses conventional bearings for general-purpose servo applications rather than reinforced bearings intended for substantial radial loads.
The stator and rotor are built around a flange measuring 142 mm, which provides sufficient housing surface area for heat dissipation. The motor uses self-cooling through free air circulation instead of forced ventilation, eliminating the need for an auxiliary fan. Under rated drive voltage, the shaft reaches 4500 rpm, making the motor suitable for high-throughput pick-and-place systems and carton-forming equipment. An optical EnDat feedback unit is mounted on the rear housing and transmits absolute position data to the controller. A standard holding brake locks the shaft when power is removed, preventing vertical or suspended loads from drifting. Mechanical power is transferred through a smooth shaft end, while the lack of an oil seal requires the front bearing to be protected from fluid ingress. Length code 7 indicates an active stack height that provides torque output suited to medium-inertia loads.
The encoder provides 25/12 bits of single-turn and multi-turn resolution, allowing the drive to track the shaft angle and accumulated revolutions accurately. It stores position data for up to 4096 revolutions, supporting applications that require absolute position retention across operating cycles. Communication uses EnDat version 2.2, which supports bidirectional diagnostic data and electronic motor information. The cabling exits through an angled swivel connection, allowing the wiring to follow the machine frame without creating an excessive cable bend. A prewired power and encoder connector simplifies the electrical connection between the motor and its compatible drive. The compact bearing arrangement is intended for typical servo couplings, so substantial side loads should be supported by suitable external mechanics.
