8JSA33.E9045D200-0 B & R Automation
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The B & R Automation 8JSA33.E9045D200-0 is a synchronous motor in the 8JS Synchronous Motors series. It features a self-cooling method, flange mounting style, and a nominal speed of 4500 RPM. The motor has an inductive EnDat 2.1 multi-turn encoder system with 4096 revolutions and 18/12 bit resolution, and offers a holding brake torque of 2.5 Nm.
Internal Product Review
The 8JSA33.E9045D200-0 is a B & R Automation 8JS series synchronous motor with self-cooling and flange mounting. Inductive EnDat 2.1 feedback and ±280 arcsec encoder precision support accurate positioning in dynamic servo applications. A 4500 RPM nominal speed and 2.5 Nm holding brake make the unit a strong choice for compact motion systems.
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Product Description:
The 8JSA33.E9045D200-0 is a synchronous servo motor developed by B&R Automation within the 8JS Synchronous Motors series. Designed for axis control in packaging machines, pick-and-place units, and other industrial automation applications, the unit converts electrical energy into precisely regulated rotary motion. A matching inverter coordinates the motor’s torque, speed, and position with the movements of other machine components.
Flange mounting enables direct integration with gearboxes or machine frames while minimizing alignment error. When powered by the designated inverter, the rotor can sustain 4500 rpm, providing high peripheral velocity for compact mechanisms. Heat produced by copper losses is removed through self-cooling, so no external fan or liquid circuit is required. Position feedback is handled by an inductive EnDat 2.1 encoder with an absolute angular accuracy of ±280 arcsec. Its digital word length is 18/12 bits for single-turn and multi-turn measurements, providing fine resolution within each revolution. The multi-turn encoder preserves absolute position data across power cycles. The motor has a size 3 frame and length code 3, providing a balance between inertia and continuous torque. A standard holding brake secures the shaft whenever the drive disables torque.
The braking device supplies 2.5 Nm of static torque, allowing the motor to hold vertical loads without drifting. Power and feedback conductors exit through an angled swivel connector, allowing cable loops to remain clear of moving parts. For extended travel tracking, the feedback system indexes 4096 revolutions beyond the single-turn count, providing an absolute reference over long strokes. Motion is transmitted by a smooth shaft, which mates with clamping hubs or compression couplings without a key. The housing is supplied without an oil seal, so installations exposed to lubricants require an external barrier to prevent ingress. The flange and shaft tolerances are compatible with current-generation drives and help maintain concentricity during high-speed operation.
