Product Description:

The 8MSA3M.R0-30 is a three-phase synchronous motor manufactured by B&R Automation as part of the 8MS Three Phase Synchronous Motors series. Designed for direct mounting to planetary gearboxes or belt pulleys, this unit supplies controlled rotary motion wherever coordinated multi-axis movement is required in packaging, electronics, or intralogistics lines. Integrated resolver feedback and a compact cylindrical housing allow the motor to close a rapid torque loop with the associated drive controller while occupying minimal installation space.

Its thermal management relies on self-cooling, so airflow around the housing is sufficient without external fans or liquid circuits. Under nominal conditions, the shaft reaches 3000 rpm, a speed matched to high-throughput conveyors and indexing tables. The relative rated torque is classified as medium, indicating balanced performance between acceleration capability and continuous load handling. Installation can be performed with up to 200 N of permissible axial force on the shaft, protecting internal bearings from preload during coupling. Dynamic position feedback is provided by a resolver whose nonlinearity stays within ±1 angular minute, and this tight electrical symmetry helps the controller maintain smooth commutation even at low velocities. Resolver precision across the full range is ±10 angular minutes, supporting stable incremental positioning.

Power and feedback cables exit on the A-side, allowing compact routing into cable chains. The motor uses size code 3 and length code M, giving a moderate overall envelope without compromising torque density. A smooth shaft end supports backlash-free clamping hubs, and the lack of a keyway reduces stress concentrations. The motor uses a BRX family resolver, so no separate encoder is required. It is supplied without a holding brake and without an oil seal, so external braking or sealing must be provided where required.