8JSA32.R0055D100-0 by B & R Automation

B & R Automation manufactures the 8JSA32.R0055D100-0 as part of the 8JS Synchronous Motors series. This motor is intended for closed-loop industrial axes where fast velocity regulation and precise electrical commutation are required. Within an automation cell, it converts drive output current into mechanical rotation so that a coupled load can be positioned or cycled at repeatable rates. The flange-style housing allows the unit to integrate directly into machine frames without additional brackets, and the electrical interface supports connection to B & R inverter modules used in multi-axis systems.

The motor's nominal operating point is 5500 RPM, a speed that lets lightweight tooling reach high surface velocities without oversized gear reduction. Heat produced at this speed is removed through self-cooling; the frame dissipates thermal energy to ambient air and eliminates the need for external blowers. Position feedback comes from a resolver, providing sine-cosine signals that remain readable even during severe vibration. An accuracy of 10 angular minutes limits cumulative position error when the servo completes multiple revolutions. A rigid flange mounting interface maintains alignment between the stator and driven equipment, reducing shaft deflection during acceleration.

Cabling exits the stator through an angled swivel connector, allowing conductors to pivot and relieving torsion when the motor is installed in tight panels. The motor has a keyed shaft, enabling positive torque transfer to pulleys or couplings without relying only on clamping force. The motor uses Motor Size 3 and Motor Length 2, giving a consistent installation envelope for axes arranged along a common mounting plane. The unit is supplied without a holding brake, so external mechanisms must secure vertical loads when power is removed. No oil seal is fitted, so fluid exposure must be controlled by the surrounding machine enclosure.