8LSA44.DB045D300-3 B & R Automation
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The 8LSA44.DB045D300-3 is a three-phase synchronous motor made by B & R Automation and is part of their 8LS Synchronous Motors series. It features a 100 mm mounting flange, a rated speed of 4500 rpm, and a standard holding brake. The motor uses inductive EnDat encoder technology with multi-turn capability for up to 4096 revolutions.
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Product Description:
The 8LSA44.DB045D300-3 is a three-phase synchronous motor produced by B&R Automation for the 8LS Synchronous Motors series. Designed for closed-loop drive systems, the unit converts electrical energy into rotary motion that positions tooling, conveyors, or feed screws with repeatable accuracy in automated machinery. In line-mounted gantries and packaging stations, the motor provides dynamic speed control while minimizing maintenance compared with geared solutions.
Its mechanical interface uses a 100 mm flange that mates directly with a compatible mounting surface. The motor uses standard bearings rather than reinforced bearings. Under rated conditions, the shaft reaches 4500 rpm. Cooling is provided by self-cooling with free air circulation, eliminating the need for an external blower. Connection conductors terminate in an angled swivel connector that supports flexible cable routing around adjacent machine components. A standard holding brake keeps the load stationary when power is removed. The shaft end includes a key for positive engagement with a compatible coupling. Length code 4 indicates the motor’s stack size, while product revision 3 identifies the current design update. The shaft has no oil seal, so it should be installed where lubricant cannot enter through the shaft interface.
Inductive EnDat feedback, version 2.2, uses a 19-bit single-turn and 12-bit multi-turn resolution to transmit absolute rotor position over a bidirectional digital channel. The integrated counter tracks position across 4096 revolutions, allowing the axis to retain its position through multiple mechanical rotations and recover automatically after a power interruption. This feedback arrangement is compatible with B&R parameter sets assigned to the 8LSA designation. Its digital position data allows the drive to regulate commutation, velocity, and angular position without relying on a separate external measuring system. The balanced rotor assembly supports smooth vector control across the available speed range while helping the servo loop respond consistently to changing loads.
