8LSA57.E1045D000-0
B & R Automation manufactures the 8LSA57.E1045D000-0, a three-phase synchronous motor in the 8LS Synchronous Motors series. The unit carries the 8LSA designation and belongs to the standard performance class for servo axes. Designed for positioning and velocity control in industrial automation, it converts electrical power into rotational motion with high dynamic accuracy. This motor is used in pick-and-place gantries, packaging lines, and indexing tables where responsive torque and compact dimensions are required.
The motor delivers a nominal speed of 4500 rpm, allowing fast cycle times on high-speed axes. Thermal management relies on self-cooling with free circulation, so no external fan or liquid circuit is required. Power and feedback conductors exit the housing through an angled swivel connector, which helps with cable routing in tight spaces. Integration to machine frames is provided by a mounting flange with a face diameter of 142 mm. The motor uses a single industrial connector, and the length-code 7 housing fits mid-range torque classes within the series. It does not include a holding brake or an oil seal, so external provisions may be needed for back-driving, vertical loads, or protection against lubricant ingress.
The feedback system uses an optical EnDat encoder with version 2.1 protocol for fully digital position reporting. It supports a native resolution of 13/12-bit for single-turn and multi-turn tracking, and the built-in counter adds multi-turn capability of 4096 revolutions so absolute position can be retained after power loss. A smooth shaft simplifies coupling to precision gearheads or direct-drive loads where keyways are unnecessary. The mechanical build follows a standard configuration without reinforced bearings, which is suitable for radial loads within the normal catalog limits.
