8MSA5E.R0-D200-1 B & R Automation
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The 8MSA5E.R0-D200-1 is a synchronous motor from B & R Automation, part of the 8MS Three Phase Synchronous Motors series. It has a motor size of 5 with length E, operates at a nominal rated speed of 3000 rpm, and uses a self-cooling system. The motor features a BRX resolver with ±1 angular minute non-linearity and comes with a smooth shaft end.
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Product Description:
The 8MSA5E.R0-D200-1 synchronous servomotor is produced by B&R Automation as part of the 8MS Three Phase Synchronous Motors series. This size-5 motor has an E-length housing and supports closed-loop motion axes that require precise torque control within a compact mounting space. It operates with a three-phase servo inverter and delivers rotational power to conveyors, pick-and-place arms, indexing tables, and other automated machinery. The permanent-magnet rotor works with electronic commutation to provide controlled speed and torque throughout repetitive motion cycles.
The housing uses a self-cooling design, so surface convection removes heat without external fans. This cooling method reduces airflow requirements around the motor while allowing heat to dissipate through the housing. Power and feedback cables follow a top connection direction, which helps keep wiring organized inside vertical machine columns. Under nominal operating conditions, the rotor reaches 3000 rpm, supporting fast positioning cycles and responsive machine movement. The motor provides exceptionally large relative rated torque, allowing the electromagnetic system to deliver higher continuous torque than smaller frame sizes in the same platform. Position feedback is supplied by a BRX resolver, which produces analog sine-cosine signals that remain reliable under vibration and temperature changes. The motor does not include a holding brake, so an external mechanical clamp or drive-generated torque must secure vertical loads when power is removed.
The resolver has a nonlinearity limit of ±1 angular minute, which indicates the maximum local deviation in its feedback signal. Its absolute precision across one full revolution remains within ±10 angular minutes, giving the drive a known position-error range for closed-loop control. A smooth shaft end accepts backlash-free clamping couplings and avoids the localized contact stresses associated with keyed connections. Because the motor does not have an oil seal, it should be installed where lubricant is unlikely to reach the shaft opening. If it is connected to a gearbox that may release lubricant near the interface, an external seal can help protect the bearing system. Proper shaft alignment also reduces radial loading on the bearings and helps maintain consistent feedback during operation.
