8KSJ95.E7020B100-0 by B & R Automation

B&R Automation's 8KSJ95.E7020B100-0 belongs to the 8KS Synchronous Motors series and functions as a three-phase synchronous drive for precision positioning in automated machinery. By combining torque production with closed-loop feedback, the motor serves packaging lines, gantry axes, and material-handling equipment that demand high repeatability. Its internal liquid circuit supports machine builders who prefer water cooling to remove heat at the source, while the integrated EnDat multi-turn encoder supplies absolute position data directly to the drive controller for coordinated multi-axis motion.

The rated speed is 2000 rpm, which is the mechanical output point at which the torque curve and efficiency are optimized for standard servo inverters. Positioning repeatability is limited to ±20", supporting tight alignment tasks without external fine-tuning devices. Because the stator jacket is water-cooled, thermal drift is minimized and continuous duty cycles are possible even in sealed cabinets. Feedback resolution is provided by a 2048-line optical scale, and the data stream uses the EnDat 2.1 protocol, allowing single-cable technology between the motor and controller. The optical operating principle, multi-turn design, and 9-frame, length-5 mechanical envelope support accurate motion without a holding brake or oil seal.

The encoder can distinguish 4096 complete shaft revolutions, enabling absolute homing after power loss. Installation options include flange mounting with a B-side base, and the power terminal box sits on the top with a 270° right-facing outlet to keep cabling clear of moving parts. A keyed shaft end simplifies coupler alignment, and the cooling module, including the fan and water lines, attaches on the right side to match panel layouts. The overall build follows the 8KSJ construction profile, and because no special option or auxiliary brake is fitted, the configuration centers on the drive, the right-side cooling hardware, and the automatic version 0 setting used by the B&R configurator.