8LSA73.DB030D100-3 B & R Automation
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The B & R Automation 8LSA73.DB030D100-3 is a three-phase synchronous motor from the 8LS Synchronous Motors series. It features a flange dimension of 190 mm and a rated speed of 3000 rpm. This motor is self-cooled with free air circulation, uses an inductive EnDat encoder, and has a shaft end with key.
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Product Description:
The 8LSA73.DB030D100-3 is a three-phase synchronous motor produced by B & R Automation within the 8LS Synchronous Motors series. As a rotary actuator, it converts electrical power into regulated torque and speed for positioning or continuous-duty axes in industrial automation cells. The base designation 8LSA indicates standard construction without reinforced bearings, making the motor suitable for applications whose radial and axial loads remain within the capacity of the standard bearing arrangement. Its synchronous design supports controlled motion when paired with a compatible servo drive and motion controller.
The motor reaches a rated output speed of 3000 rpm, supporting drive systems that require consistent velocity during continuous or indexed operation. A square mounting flange measuring 190 mm across the front face supports axial alignment with compatible gearboxes, couplings, and machine mounting surfaces. Position feedback is delivered by an inductive EnDat encoder that uses protocol 2.2, enabling digital communication with the controller. Electrical termination is provided through an angled swivel connection, which reduces cable strain and allows the connector orientation to be adjusted in confined installation spaces. Thermal management relies on self-cooling through free air circulation, so the motor does not require an external fan or liquid-cooling circuit. The motor does not include a holding brake, so stationary holding torque must be supplied by the drive or an external mechanical device.
The feedback system provides a resolution of 19/12 bits for single-turn and multi-turn position data, supporting accurate position measurement over repeated operating cycles. Its encoder has a multi-turn range of 4096 revolutions, allowing it to retain absolute orientation across numerous shaft rotations without requiring a new reference movement after a normal power cycle. Length code 3 indicates the selected magnetic stack length for this motor configuration. The product is Revision 3, identifying the release level of the motor design. The keyed shaft provides positive torque transfer to a coupling or driven component, while the absence of an oil seal reduces friction at the shaft interface. Applications exposed to oil, coolant, or other contaminants should provide suitable external protection around that interface.
