8JSA33.R0045D100-0 by B & R Automation

The 8JSA33.R0045D100-0 is a synchronous motor manufactured by B&R Automation for the 8JS Synchronous Motors series. It serves as a rotary drive element in automated machinery, translating servo drive commands into precise shaft rotation for indexing tables, pick-and-place heads, or light conveyor sections. Its synchronous design supports repeatable motion on compact axes where accurate start-stop behavior is required. The housing mounts directly to a machine frame without intermediate brackets, which simplifies mechanical alignment during installation.

This model reaches a nominal speed of 4500 RPM, allowing high cycle frequencies while staying within the continuous torque envelope of its drive controller. Heat produced at that duty point is removed by a self-cooling design that relies on surface convection rather than an external blower. Cabling enters through an angled swivel connector, which lets the plug rotate for strain relief and helps maintain minimum bend radii inside tight cabinets. Position feedback is supplied by a resolver; its mechanical accuracy is specified at 10 angular minutes, supporting stable velocity loops even when temperature varies. Internal windings use an insulation system matched to the size-3 magnetic dimensions of this motor.

The motor uses flange mounting for IEC-style layouts, so couplings or gearheads with the same pilot diameter can be bolted on without shims. Torsion is transmitted by a keyed shaft, which works with standard hub keys. Physical proportions correspond to Motor Size 3 and extend axially to Motor Length 3, balancing inertia against peak torque rise time. There is no integrated holding brake, so static load retention must be handled by the drive or an external brake. An oil seal is also omitted, meaning the shaft passage should remain in dry zones or be protected by the machine builder's own sealing arrangement.