8MSA4L.R0-67 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 8MSA4L.R0-67 is part of the 8MS Three Phase Synchronous Motors series and features self-cooling along with a motor size of 4 and motor length L. It uses a BRX resolver encoder with a resolver non-linearity of ±1 angular minute and operates at a rated speed of 4500 rpm. This model has a keyed shaft end and does not include a holding brake or oil seal.
Internal Product Review
The 8MSA4L.R0-67 is a B & R Automation three-phase synchronous motor with self-cooling and a keyed shaft for dependable mechanical integration. Rated for 4500 rpm and equipped with a BRX resolver, the motor stands out for precise feedback and strong motion performance.
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Product Description:
The 8MSA4L.R0-67 is a three-phase synchronous motor produced by B & R Automation for the 8MS Three Phase Synchronous Motors series. It serves as a rotary drive element in automated equipment. The motor converts electrical power into controlled mechanical rotation for positioning axes, conveyors, and processing spindles within industrial automation cells.
The unit has motor size 4 and the elongated L length code, giving it added stack height for higher continuous torque. Power and feedback cables exit on the A-side, which simplifies routing when the motor is mounted against machine frames. The rotor turns at a nominal 4500 rpm, so drive controllers can reach midrange surface speeds without gear reduction. Relative torque capability is rated as large, indicating substantial overload capacity for rapid acceleration cycles. Thermal regulation relies on a self-cooling housing that exchanges heat through its surface fins rather than external blowers or liquid jackets. The shaft end is keyed, enabling positive torque transmission to pulleys or couplings. The motor is supplied without a holding brake, so the drive must provide torque when the application requires the shaft to remain stationary. It is also delivered without an oil seal, so protection against fluid ingress must be provided at the machine interface.
Feedback is handled by a resolver, allowing analog angle detection that remains stable under temperature fluctuations and electrical noise. The specific sensing element is the BRX type, which is compatible with B & R ACOPOS drive controllers. Electrical nonlinearity is limited to ±1 angular minute, which restricts deviation between the rotor position and the resolver’s sinusoidal output signals. Absolute precision across the full electrical cycle remains within ±10 angular minutes. These resolver characteristics support smooth motor commutation while helping the drive maintain accurate velocity and position control throughout operation.
