8LSA25.D4045D000-0 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 8LSA25.D4045D000-0 is a three-phase synchronous motor that is part of the 8LS Synchronous Motors series. It has a rated speed of 4500 rpm, features a self-cooling principle with free air circulation, and offers angled connector hardware for connection. The motor includes optical EnDat encoder technology and is designed with a mounting flange and a 58 mm flange dimension.
Internal Product Review
The 8LSA25.D4045D000-0 is a B&R Automation three-phase synchronous motor with self-cooling through free circulation. The optical EnDat encoder and 23-bit single-turn resolution support accurate feedback for precise motion control. The angled swivel connector enhances installation flexibility, making this motor a strong choice for high-speed operation at 4500 rpm.
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Product Description:
B&R Automation manufactures the 8LSA25.D4045D000-0, a three-phase synchronous motor in the 8LS Synchronous Motors series. The unit converts the pulse-width modulated output of a servo drive into controlled mechanical rotation, supporting positioning, indexing, and velocity control in packaging machines, assembly cells, and conveyor segments. Its standard 8LSA configuration does not include reinforced bearings. The smooth shaft and flange-mounted body allow direct coupling to gearboxes or timing-belt pulleys without intermediate adapters.
The motor reaches a rated speed of 4500 rpm, providing headroom for high-cycle operation while remaining within its continuous torque range. A 58 mm front flange centers the stator stack and transfers radial loads to the machine frame. Heat generated by copper losses is removed through self-cooling, which relies on free air circulation along the housing fins, so the installation does not require external blowers or liquid cooling lines. Rotor position is measured by an optical EnDat feedback system that supports bidirectional communication for electronic motor data and diagnostics. The encoder provides a 23-bit single-turn position signal, delivering 23 bits of absolute position data per revolution without a multi-turn counter. This arrangement is suitable for axes that establish a reference position during startup.
Cabling exits through an angled swivel connection that pairs with a keyed connector, reducing cable stress when the motor is installed in a confined enclosure. A factory-machined mounting flange simplifies alignment and keeps the motor centered on the machine interface. Length code 5 indicates a rotor stack selected to balance inertia and continuous torque. The motor does not have an oil seal, so the shaft interface requires suitable protection in areas exposed to lubricants or contaminants. It is also supplied without a holding brake, which means an external clamping device or drive-applied torque is required when a stationary load must be retained. Because the encoder does not track multiple revolutions, the control system must establish the axis position after startup when the application requires travel beyond one mechanical revolution.
