Product Description:

The 8MSA3M.R0-D3 is a three-phase synchronous motor produced by B & R Automation for the 8MS Three Phase Synchronous Motors series. As a drive element, it converts electrical energy from a matched servo inverter into rotational motion for indexing tables, packaging axes, and material-handling gantries inside automated cells. This model targets installations where continuous 3000 rpm class performance is required but forced ventilation is unnecessary, giving machine designers a compact, sealed unit for high-cycle positioning.

The motor reaches a rated speed of 3000 rpm, meaning the rotor can sustain that velocity under nominal current and temperature limits. Thermal management is handled solely by a self-cooling housing that rejects heat through its own surface without external fans or liquid circuits. All power and feedback leads exit upward because the connection points are on the top of the stator, simplifying cabinet routing in vertical machines. Rotor position is detected by a resolver, providing absolute angle data immune to electrical noise and high temperatures. During installation the shaft can tolerate up to 200 N of axial force, allowing press-fit couplings or pulley mounting without damaging the bearings.

This variant delivers a medium level of continuous torque relative to other 8MS units, giving a balance between acceleration capability and current demand. Its frame corresponds to motor size 3, so the flange and bolt pattern follow the third-generation 8MS footprint used across B & R gantry kits. The overall active stack is identified as motor length M, indicating a mid-length stator and rotor that limit inertia while supplying the required torque. Power is transmitted through a keyed shaft end, ensuring positive mechanical locking with couplings or gears under bidirectional load reversals. Resolver linearity of ±1 angular minute and precision of ±10 angular minutes support fine velocity loops without additional feedback devices.