8MSA5M.R0-Y1 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 8MSA5M.R0-Y1 is part of the 8MS Three Phase Synchronous Motors series and features a self-cooling system. It uses BRX resolver encoder technology with a non-linearity of ±1 angular minute and a precision of ±10 angular minutes. The motor is size 5 with a medium relative rated torque and length M.
Internal Product Review
The 8MSA5M.R0-Y1 is an 8MS three-phase synchronous motor from B & R Automation with self-cooling for consistent thermal behavior. Resolver feedback and ±1 angular minute non-linearity give this motor strong positioning stability for demanding motion applications.
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Product Description:
The 8MSA5M.R0-Y1 synchronous motor is produced by B & R Automation and is part of the 8MS Three Phase Synchronous Motors series. Within an automation cell, this motor delivers electrically commutated torque for positioning tables, conveyor sections, or spindle drives, providing a direct interface to the manufacturer’s AC servo controllers. A compact frame, integrated resolver feedback, and standardized shaft geometry allow machine builders to mount the unit quickly and align it with gearboxes or belt transmissions without supplemental adapters.
Thermal management relies on a self-cooling housing, so heat is carried away by the aluminum frame and airflow generated by shaft rotation. The frame code of 5 indicates a medium-diameter stator that balances power density with the motor’s installation depth. Relative rated torque is classified as medium, providing mid-range continuous torque without requiring an oversized drive. Position feedback linearity is governed by a resolver nonlinearity of ±1 angular minute, ensuring minimal deviation between the electrical angle and mechanical shaft position. The feedback element uses the BRX resolver type, which is compatible with the excitation and decoding functions of the corresponding servo amplifier.
The encoder platform uses a resolver, so the rotor angle is available at power-up without a homing routine. This capability benefits machines that must resume operation promptly after an emergency stop. The motor has an overall stack length of M, placing the magnetic core in the middle of the available length range for this frame size while maintaining inertia suitable for moderate acceleration profiles. Angular precision during steady rotation remains within ±10 angular minutes, supporting consistent velocity control at high update rates. The resolver supplies continuous analog position feedback, enabling the controller to monitor shaft movement throughout each revolution. Its integrated placement also reduces the need for a separate external feedback assembly and keeps the motor installation compact.
