8MSA5L.R0-B500-1 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 8MSA5L.R0-B500-1 is part of the 8MS Three Phase Synchronous Motors series and features a large relative rated torque with a nominal rated speed of 3000 rpm. This motor uses self-cooling, a keyed shaft end, and resolver encoder technology with a BRX type resolver. It has a connection direction on the B side and is motor size 5 with length L.
Internal Product Review
The 8MSA5L.R0-B500-1 is a B & R Automation three-phase synchronous motor built for dependable servo duty, with self-cooling and a keyed shaft. Resolver feedback and ±1 angular minute non-linearity support precise positioning and smooth control response. A 3000 rpm nominal speed makes the motor a strong choice for dynamic automation service.
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Product Description:
The B&R Automation 8MSA5L.R0-B500-1 belongs to the 8MS Three-Phase Synchronous Motors series and serves as a driving element for coordinated axes in industrial automation. When paired with a compatible inverter, the unit delivers controlled torque and speed to packaging stations, indexing tables, and material-handling equipment where precise electrical commutation is preferred over pneumatic or hydraulic actuation. The mechanical layout uses motor size 5 with the extended L length, providing greater active stack depth for higher continuous output. This configuration supports demanding motion profiles while retaining a compact frame that can be integrated into space-constrained machinery.
Power and feedback conductors exit on the B-side, simplifying cable routing when the motor is mounted on a compact machine frame. Heat is removed through a self-cooling design that relies on the rotor fan rather than an external blower, so dedicated airflow ducts are not required. When powered by the drive, the rotor reaches a rated speed of 3000 rpm. Its relative rated torque is classified as large, indicating that the electromagnetic stack supports applications requiring strong acceleration without a larger frame. The shaft has a keyed end that provides positive mechanical engagement with couplings or pulleys. The motor does not include a holding brake, so an external mechanism must secure vertical loads when power is removed. It also does not have an oil seal, making the front bearing suitable for dry operating areas where oil or liquid contaminants will not reach the shaft opening.
Position feedback is provided by a resolver that uses the manufacturer’s BRX format. The transducer has a nonlinearity within ±1 angular minute, while its overall precision across the full electrical cycle remains within ±10 angular minutes. These tolerances indicate the maximum displacement error that the drive must correct during closed-loop operation. The resolver’s analog sine-cosine outputs allow the connected inverter to calculate rotor position whenever the system powers up. This feedback supports smooth velocity control and accurate electrical commutation throughout the operating speed range. It also allows the drive to monitor angular movement continuously as the motor accelerates, runs at a steady speed, or decelerates under load.
