8MSA3M.E1-42 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 8MSA3M.E1-42 is part of the 8MS Three Phase Synchronous Motors series and features a smooth shaft end and a self-cooling system. The motor uses an EnDat multi-turn encoder technology with a resolution of 512 lines and a frequency limit of at least 100 kHz. It has a nominal rated speed of 6000 rpm and permits an axial force of 200 Newtons during installation.
Internal Product Review
The 8MSA3M.E1-42 is a B & R Automation three-phase synchronous motor with self-cooling, well suited for demanding servo applications. An EnDat multi-turn encoder supports dependable feedback and smooth motion control. Rated speed of 6000 rpm and encoder precision of ±60" make this motor a very capable choice for high-speed positioning.
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Product Description:
The 8MSA3M.E1-42 is a three-phase synchronous motor produced by B&R Automation for the 8MS Three Phase Synchronous Motors series. It is intended for servo axes that demand precise velocity and position control, converting drive inverter output into mechanical rotation in packaging lines, pick-and-place modules, and other motion platforms. The design uses motor size 3 with length code M, and it does not include a holding brake or an oil seal, making it suitable for installations where external clamping devices and additional sealing are already provided.
During continuous duty, the rotor reaches a rated speed of 6000 rpm, which establishes the electrical frequency and torque profile required from the paired inverter. Feedback is supplied by an EnDat multi-turn encoder that delivers 512 lines per revolution; after internal multiplication, this base resolution allows fine commutation. The sensing electronics remain linear up to an encoder carrier frequency of ≥ 100 kHz at −3 dB, so high-speed position loops can operate without losing phase information. Mechanical mounting permits a shaft-end axial preload of 200 N during installation, preventing damage to the bearing assembly. Power and signal connectors are oriented on the A-side, simplifying cable routing when the motor is placed against machine plates. The motor has a medium relative rated torque, providing balanced acceleration without requiring an oversized drive.
The encoder provides a positional accuracy of ±60″, which supports tight registration moves, and its multi-turn counter records up to 4096 complete revolutions, enabling restarts without a homing cycle. Heat is removed through self-cooling, with the housing surface dissipating losses without forced airflow. A smooth shaft simplifies coupling to precision gearheads or direct-drive loads and minimizes fretting between mating components. Because the unit uses EnDat technology, absolute position and diagnostic data are exchanged over a single bidirectional line, reducing wiring complexity while maintaining real-time data integrity.
