8LSA55.EB045D200-3 by B & R Automation

The 8LSA55.EB045D200-3 is a three-phase synchronous motor manufactured by B&R Automation for the 8LS Synchronous Motors series. Designed for servo duty, it integrates with ACOPOS drives to move machine tools, packaging spindles, and handling stations where accurate velocity and position loops are required. The unit converts electrical input into tightly regulated rotary motion, allowing multiple axes to run in sync while reducing mechanical transmission paths in compact automation cells.

It reaches a nominal speed of 4500 rpm, enabling high cycle rates when paired with appropriate gearing. Position feedback comes from an inductive EnDat sensor that uses EnDat version 2.1 for digital, bidirectional communication with the controller. The motor attaches to machinery through a 142 mm flange and dissipates heat by means of self-cooling with free air circulation, eliminating the need for forced ventilation. A standard holding brake secures the rotor during power-off events, and the electrical interface is provided through a sealed connector mounted on an angled housing. The rotor couples to the load through a smooth shaft, which reduces fretting at clamped hub connections and simplifies assembly. An internal mounting flange and the connectorized cabling support straightforward installation in production equipment.

The motor uses a standard bearing configuration without a reinforced bearing and an angled swivel outlet so the power and feedback leads can be routed clear of adjacent frames. Multi-turn feedback is available for up to 4096 revs, and the single-turn and multi-turn resolution is 19/12 bits, permitting fine position capture without external homing switches. Length code 5 corresponds to the active stack height, and product revision 3 indicates the design revision. The absence of an oil seal reduces axial length, and the connector hardware allows pre-terminated cable sets to be installed without field soldering.