8JSA33.R0045D000-0 B & R Automation
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The B & R Automation 8JSA33.R0045D000-0 is part of the 8JS Synchronous Motors series and uses a self-cooling method. This synchronous motor features flange mounting and a nominal speed of 4500 RPM. It is equipped with a resolver encoder system with an accuracy of 10 angular minutes and has a smooth shaft end with an angled swivel connector.
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Product Description:
The 8JSA33.R0045D000-0 is a synchronous servo motor produced by B&R Automation for its 8JS Synchronous Motors series. As a compact rotary actuator, the unit provides closed-loop torque and speed control for conveyors, pick-and-place heads, and other motion axes in industrial automation systems. The 8JS design combines a permanent-magnet rotor with integrated feedback so a compatible drive can command precise electrical angles while minimizing mechanical backlash. Its mechanical envelope follows IEC flange patterns, allowing straightforward integration with gearboxes or direct-drive installations where repeatable rotary positioning is required.
Its nominal speed of 4500 rpm is the synchronous velocity that the drive can apply continuously before field weakening begins. Heat produced by copper losses is removed through a self-cooling housing, so the machine frame does not require an external fan or liquid cooling circuit. Rotor position is reported by a resolver, an analog transducer that withstands vibration and provides absolute angular information with an accuracy of 10 angular minutes. Mechanical attachment uses flange mounting, ensuring concentric alignment between the motor pilot diameter and a downstream gearbox or timing pulley. The motor has a length code of 3, and its magnetic stack provides continuous torque for midsize feed axes while keeping the overall depth manageable inside compact enclosures.
An angled swivel connector routes power and feedback cables parallel to the housing, reducing the required installation depth and simplifying cable routing. The rotor transmits torque through a smooth shaft, making it suitable for clamp or shrink-fit couplings that do not require keyways. Because the motor is supplied without a holding brake, static load retention must be provided by the drive or an external mechanism when the axis is stationary. The frame has a motor size of 3 and does not include an oil seal, so the installation location should remain free of pressurized lubricant. The absence of a keyway allows the coupling to grip the shaft uniformly, while the swivel connector can be positioned to accommodate restricted cable paths around nearby machine components.
