The 8MSA4M-RO-31 (correctly formatted as 8MSA4M.R0-31) is a three-phase AC synchronous servo motor manufactured by B&R Industrial Automation, part of their high-performance 8MS Three-Phase Synchronous Motor series. It is primarily designed for demanding industrial automation tasks, robotics, and CNC machinery requiring high dynamic performance and precise motion control.

Technical Specifications

1. Motor Type: Synchronous, Three-Phase, Self-Cooling
2. Frame Size: Size 4 (M variant)
3. Rated Speed (\(N_{N}\)): 3000 RPM
4. Nominal Voltage (\(U_{N}\)): 330 V (with an operational AC voltage capability up to 400V)
5. Current Ratings: 3.75 A (Rated) / 4.10 A (Stall/Maximum)
6. Torque:
7. Nominal Torque (\(M_{N}\)): 4.6 Nm
8. Stall Torque (M₀): 5.3 Nm
9. Torque Constant: 1.29 Nm/A
10. Feedback System: Integrated Resolver for precise position feedback.
11. Environmental Protection: Rated at IP64 or IP65, making it resistant to dust ingress and moisture splashing, which is ideal for harsh manufacturing environments.
12. Physical Profile: Double-flanged construction with a round bore design and roughly 6 kg in weight.