8JSA32.E4055D000-0
The 8JSA32.E4055D000-0 is a synchronous motor developed by B & R Automation as part of the 8JS Synchronous Motors series. In automated production cells, this motor converts controlled electrical input into repeatable mechanical rotation. It enables coordinated motion for feeders, small gantries, and indexing stations where tight velocity regulation and compact mounting are important. Its synchronous operating principle also supports stable response during repeated starts, stops, and short positioning moves in compact machinery.
Its rated output speed is 5500 rpm, allowing fast cycle execution while relying on a self-cooling design that dissipates heat through the housing without external airflow or liquid circuits. Rotor position is reported by an optical EnDat 2.1 feedback system, so drive controllers receive absolute data immediately after power-up. Within that system, positional accuracy is maintained to ±60 arcsec, reducing interpolation error in fine incremental moves, and raw measurement is delivered with a granularity of 13/0 bits for single-turn and multiturn data. Because no holding brake is fitted, axis standstill torque must be provided by the drive or external locking hardware, and omitting the brake lowers inertia for quicker acceleration.
The feedback assembly is a single-turn device, so the absolute position repeats every mechanical revolution, which suits short-stroke rotary tasks where a full-turn reset is acceptable. Power and signal cabling exit through an angled swivel connector, simplifying strain relief in tight cabinets. Installation to mechanical frames is carried out through flange mounting, matching common IEC motor adapter plates, while the output interface is a smooth shaft that mates with friction couplings or custom hubs. With motor length code 2 and size code 3, the unit balances torque density against envelope constraints, and because no oil seal is installed, it should be placed where lubrication splash is not expected.
