8LSA46.EB045D000-3 B & R Automation
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The B & R Automation 8LSA46.EB045D000-3 is a three-phase synchronous motor from the 8LS Synchronous Motors series with a rated speed of 4500 rpm and a flange dimension of 100 mm. It features an inductive EnDat encoder with multi-turn capability up to 4096 revolutions and a resolution of 19/12 bits for single and multi-turn. The motor includes a smooth shaft end, angled connector, and uses self-cooling by free circulation.
Internal Product Review
The 8LSA46.EB045D000-3 is a B & R Automation three-phase synchronous motor rated for 4500 rpm. Inductive EnDat encoder feedback and multi-turn capability to 4096 revolutions support accurate positioning in demanding servo applications. The angled swivel connector simplifies installation, making this motor a strong choice for precise high-speed axis performance.
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Product Description:
The 8LSA46.EB045D000-3 is a three-phase synchronous motor manufactured by B & R Automation for the 8LS Synchronous Motors series. The 8LSA model designation and product revision 3 place it in the standard configuration line, which does not include reinforced bearings. With length code 6 and a smooth shaft end, the unit is sized for compact machinery that needs precise rotary motion without an integrated brake or shaft seal, making it suitable for packaging, material-handling, and pick-and-place axes in industrial automation.
The motor reaches a rated speed of 4500 rpm, allowing fast cycle times while remaining within the rotor balance limits for the 100 mm flange class. Heat is removed through self-cooling with free circulation, so no external fan or liquid cooling loop is required. Position feedback is provided by an inductive EnDat encoder that uses the EnDat 2.1 protocol; this serial interface supplies absolute position data and online diagnostic information to the drive controller. A square mounting face of 100 mm aligns with IEC size 100 gearboxes. The lack of a holding brake keeps the inertial load low for rapid acceleration. Standard bearings support the rotor, while the omitted shaft seal reduces drag during high-speed operation.
Cabling exits through an angled swivel connector that can be rotated during installation, simplifying routing in confined machine spaces. The encoder provides a resolution of 19/12 bits for single-turn and multi-turn position measurement. Its multi-turn counter stores positions across as many as 4096 revolutions without external batteries, supporting startup without homing after a power loss. Mechanical attachment uses a mounting flange with through holes that match the frame size, while the standard connector set carries the power and signal conductors. The rotatable connector also helps prevent excessive cable bending when the motor is installed near enclosure walls or adjacent machine components.
