8LSA46.DB030S300-3 by B & R Automation

The 8LSA46.DB030S300-3 is a three-phase synchronous motor produced by B&R Automation as part of the 8LS Synchronous Motors series. Serving as a compact torque source for servo axes, it connects directly to a mounting flange and delivers rotary motion that can be integrated with digital drive controllers. The internal 8LSA designation indicates a standard mechanical build without reinforced bearings, making the unit suitable for general industrial automation where balanced radial and axial loads are expected.

This motor reaches a rated speed of 3000 rpm, allowing it to be paired with gear ratios that suit common linear or rotary cycle rates. Thermal management is handled by self-cooling with free air circulation, so no external fan or liquid circuit is required, and the housing fins dissipate heat into the surrounding air. Position feedback is generated by an inductive EnDat encoder that communicates through protocol version 2.2 for noise-immune differential signaling. Mechanical attachment uses a 100 mm square flange that aligns with IEC dimensions, simplifying installation in multi-vendor machines. Power, feedback, and brake conductors exit through a single-cable hybrid solution, reducing cabinet wiring and allowing tighter cable-chain routing.

A standard holding brake secures the shaft during power-off states, helping prevent load drift on vertical or safety-critical axes. The encoder supplies 19/12-bit resolution for single-turn and multi-turn counts, supporting precise interpolation across the full revolution range. Absolute tracking extends across 4096 multi-turn revolutions, so homing routines can be omitted after an emergency stop or service work. Power is transmitted through a shaft end machined with a keyway, enabling immediate coupling to pulleys or couplings without a custom hub. Because the design omits an oil seal, the motor is intended for installations where the ambient environment is free of pressurized lubricant.