8JSA32.E4055D000-0 by B & R Automation

The 8JSA32.E4055D000-0 synchronous motor is built by B&R Automation as part of the 8JS Synchronous Motors series. Within that series, it uses size 3 with length code 2, giving it a compact profile for tight machine bays and other installations with limited mounting space. Designed for industrial automation, it delivers rotary motion to servo axes that require fast indexing and accurate positioning. This layout suits applications where motor length must stay short without sacrificing closed-loop response.

Power and feedback cabling are routed through an angled swivel connector, allowing strain-free wiring inside crowded cabinets and tighter routing around nearby machine components. Heat is removed through self-cooling, so no external blower or liquid circuit is required. At a nominal speed of 5500 rpm, the rotor can support high cycle rates common in pick-and-place or packaging stations. Position data is generated by an optical EnDat 2.1 single-turn encoder with a resolution of 13/0 bits (S/M), giving the drive controller enough detail for smooth velocity control and repeatable start-stop behavior. The encoder measures one mechanical revolution, so the drive can detect absolute shaft position within that range without multi-turn counting.

The feedback device maintains an angular accuracy of ±60 arcsec, helping keep position error low during fine alignment sequences. The motor has no holding brake, so external clamping or drive torque must secure the load when power is removed. The housing is prepared for flange mounting, which centers the motor and transfers reaction forces directly to the machine frame. It also uses a smooth shaft for coupling to gearboxes or pulleys. Because there is no oil seal, the motor is intended for dry, clean environments where lubricant exclusion is not required.