Product Description:

The 8JSA22.E5B35D704-0 is a synchronous servo motor manufactured by B & R Automation and assigned to the 8JS Synchronous Motors series. This 8JS Series unit converts drive current into precisely timed shaft motion for indexing tables, Cartesian pick-and-place arms, and compact packaging modules. By delivering repeatable torque across its speed range, the motor helps machine controllers hold position, follow electronic cams, and coordinate axes that share mechanical loads in continuous production environments.

Thermal management is handled by self-cooling, so heat leaves the housing through convection and conduction without auxiliary fans, which keeps energy consumption low. Position feedback is produced by an optical EnDat 2.1 absolute encoder that streams digital angle information to the drive in real time. The sensing discs provide a 13/12-bit single-turn and multi-turn resolution, delivering 8,192 single-turn steps and 4,096 turn counts to support fine acceleration ramps and absolute positioning at startup. Mechanical precision is limited to ±60 arcseconds, allowing gear ratios to be selected without excessive backlash compensation. An angled swivel connector rotates to align with the cable tray, minimizing stress on the motor leads. The frame has a size of 2 and a length of 2, keeping the motor’s overall mass low.

The motor uses flange mounting, allowing the housing to be bolted directly to a gearbox or bearing block. Output torque is delivered through a keyed shaft, providing positive drive engagement for pulleys, gears, or couplings. An internal oil seal shields the front bearing from dust and fluid exposure during washdown or lubrication cycles. Because the unit is supplied without a holding brake, vertical or suspended axes must use an external mechanical restraint when power is removed. The encoder preserves absolute position after shutdown, while the compact frame makes the motor suitable for densely packed automation cells.