Product Description:

The 8JS43.R0050D000-1 is a synchronous motor built by B&R Automation as part of the 8JS Synchronous Motors series. It serves as a drive element that translates electrical commands from a servo inverter into precise shaft rotation for automated machinery. By providing closed-loop motion control, it integrates easily into packaging lines, handling gantries, and other installations that rely on coordinated multi-axis positioning.

With a self-cooling housing in Motor Size 3, the unit needs no external airflow aids. Power and feedback wiring exit through an angled swivel connector that simplifies cabling in tight cabinets, while position feedback is generated by a Resolver R0 sensor. Under rated conditions, the motor delivers 1539 W of mechanical output at a shaft speed of 5000 rpm, yielding a continuous torque of 2.94 Nm. Copper loss is limited by a phase-to-phase stator resistance of 2.81 Ω, and each ampere of stator current produces approximately 0.99 Nm/A of torque because of the design’s electromagnetic geometry. The rotor carries five pole pairs, so the electrical frequency remains compatible with standard servo drives even at high mechanical speed.

The motor has a stall torque of 4.8 Nm, allowing the axis to hold load when motion is stopped without overheating. During acceleration events, the back EMF rises at 63.9 V/1000 rpm, a constant that assists the drive in voltage-based speed estimation. System inertia tuning benefits from the rotor mass moment of 2.1 kgcm², which balances quick response with stability for moderate payloads. Position accuracy is supported by the resolver’s conversion tolerance of 10 angular minutes, providing sufficient resolution for general-purpose handling equipment. These parameters provide clear limits for current loop gains, mechanical coupling selection, and thermal duty planning.