Product Description:

B & R Automation builds the 8JSA32.R0055D000-0 as part of its 8JS Synchronous Motors series. This AC synchronous motor is intended for positioning and velocity tasks in automated machinery, where precise electrical commutation replaces mechanical gearing to drive loads directly. Within a multi-axis system, it serves as the rotary element that converts inverter current into controlled torque, allowing tighter speed regulation and faster dynamic response than induction units. It is well suited to automated equipment that needs repeatable motion during frequent starts, stops, and direction changes.

The motor reaches a nominal speed of 5500 RPM, supplying high output frequency for rapid traverses and short cycle times. Heat is removed through self-cooling, so no external blower or liquid circuit is required. Power and feedback conductors exit through an angled swivel connector; this orientation lets the cable bundle rotate clear of adjacent axes without strain relief brackets. Rotor position feedback is delivered by a resolver, which tolerates electrical noise and high temperatures while still providing coarse absolute angle data. Measurement uncertainty is limited to 10 angular minutes, which is adequate for drive controllers that close the loop at high update rates. A compact stator stack identified by length code 2 minimizes inertia and fits shallow machines where depth behind the mounting face is restricted.

The frame is classified as size 3, giving a standard bolt circle that matches common gearbox adapters and index tables. Its flange mounting style concentrates the load path at the motor face, reducing alignment steps during installation. A smooth shaft permits couplings or pulleys to be press-fit without keyway stress risers. The motor does not include a holding brake or an oil seal, which helps reduce rotating mass and suits systems that already use external locking or separate environmental barriers.