The 8MSA4M.R0-31 is a 3-phase synchronous AC servo motor manufactured by B&R Industrial Automation. Part of the 8MS synchronous motor series, it is engineered for highly precise motion control, low inertia, and high dynamic performance in demanding applications like robotics, CNC machinery, and packaging systems.

Technical Specifications

The full nameplate and electrical parameters of the B&R 8MSA4M.R0-31 include:

1. Motor Type: 3-Phase Synchronous AC Servo Motor
2. Nominal Speed (\(N_{N}\)): 3,000 rpm
3. Nominal Voltage (\(U_{N}\)): 330 V (compatible with 380–480V AC digital drive systems)
4. Nominal Torque (\(M_{N}\)): 4.6 Nm
5. Stall Torque (M₀): 5.3 Nm
6. Nominal Current (\(I_{N}\)): 3.75 A
7. Stall Current (I₀): 4.10 A
8. Inclosure Protection Rating: IP64 / IP65 (dustproof and resistant to water splash/jets depending on the deployment environment)
9. Cooling System: Natural convection / self-cooling
10. Feedback/Components: Integrated servo encoder, standard size 4 flange, and plug-in electrical connectors
11. Weight: Approximately 6.0 kg
12. Regulatory Standards: CE, UL File E221638, IEC 60034