8JSA72.E6020D200-0 by B & R Automation

The B & R Automation 8JSA72.E6020D200-0 belongs to the 8JS Synchronous Motors series and serves as a servo-grade rotary actuator for coordinated axes in packaging machines, pick-and-place stations, and similar motion modules. As a synchronous motor, it converts drive current from an inverter into tightly controlled torque and position feedback, allowing deterministic cycle times in industrial automation. It is supplied as a compact assembly intended to work with the ACOPOS drive platform and other real-time Ethernet motion controllers in multi-axis automation systems that require precise motion coordination.

During continuous operation, the rotor can reach a nominal speed of 2000 rpm, a value chosen to match standard gear ratios and keep linear carriage velocities within normal operating limits. Heat generated by copper losses is removed through the housing because the unit relies on self-cooling, so no external blower or liquid circuit is required. A spring-applied holding brake delivers 53 Nm of static torque and locks the shaft when the machine is stopped or de-energized. Position feedback is supplied by an optical encoder that provides 2048 lines, an effective resolution of 13-bit single-turn and 0-bit multi-turn, and a precision of ±20 arcsec. Communication is handled through the Optical EnDat 2.1 interface.

Power and feedback conductors are brought in through an angled swivel connector, allowing cable runs to clear adjacent axes and reducing interference with nearby machine components. The stator body uses flange mounting, and torque is transmitted through a smooth shaft without keyways for low-runout coupling devices. With motor size 7 and a length code of 2, the frame provides adequate inertia without enlarging the machine footprint, and there is no oil seal on the output end.