8MSA3L.R0-B5
The 8MSA3L.R0-B5 motor coupling from B & R Automation in the 8MS Three Phase Synchronous Motors series offers a precision-engineered solution for three-phase servo motor integration. It features an Outside Diameter: 42 mm and a Length Through Bore: 66 mm to ensure a compact footprint while accommodating robust torque transmission. Designed with a Material: Aluminum Alloy and a durable Finish: Anodized surface treatment, this coupling resists corrosion in harsh industrial environments. With a Rated Torque: 40 Nm and a Maximum Torque: 80 Nm, it delivers reliable power handling for moderate-duty automation tasks. The coupling’s Bore Diameter (side 1): 14 mm and Bore Diameter (side 2): 14 mm accommodate standard servo motor shafts without additional machining. This combination of dimensions and materials positions the 8MSA3L.R0-B5 as a versatile component for high-performance installations.
Performance characteristics emphasize thermal resilience and dynamic responsiveness. The assembly handles peak currents up to 3.9 A and maintains thermal stability with a Thermal Time Constant: 25 minutes, ensuring sustained operation without external cooling. Its stator winding exhibits an Electrical Resistance: 37.6 Ω per phase paired with a Stator Inductance: 45 mH to smooth current transitions and minimize electromagnetic noise. Under nominal operating conditions, the unit draws 0.83 A continuously, rising to 0.91 A under locked rotor tests, confirming robust overload protection. With a Power Rating: 0.35 kW and a Voltage Constant: 43 V/1000 min⁻¹, the coupling-motor assembly achieves efficient energy conversion and predictable back EMF behavior. The standard rotational velocity of 6000 min⁻¹ and holding torque of 0.65 Nm demonstrate its capability in high-speed, high-precision motion control.
Reliability and integration are at the core of this design. The flexible coupling accommodates Angular Misalignment: 1.5°, Radial Misalignment: 0.5 mm, and Axial Misalignment: ±1 mm, reducing stress on connected shafts and bearings. Rated to operate from Operating Temperature: –30°C to +80°C, it sustains performance across wide environmental ranges without forced-air cooling. The inclusion of a rugged resolver position sensor provides analog feedback for high-vibration settings, enhancing system accuracy in demanding applications. With a modest weight of 1.75 kg and a low Rotational Inertia: 0.39 kg·cm², this component delivers an excellent power-to-weight ratio for robotic arms, conveyor drives, and packaging machinery. Its flexible coupling design simplifies mechanical integration and prolongs maintenance intervals in industrial automation workflows.
