Product Description:

The B-804-BA-91-TE1-008 is an AC synchronous servo motor produced by Kollmorgen for the Kollmorgen Goldline B and BH Motors series. It provides closed-loop rotary motion for positioning tables, tool changers, and similar automation axes. Mechanical integration is straightforward because the housing includes a 215 mm bolt circle and 14 mm mounting holes, allowing the frame to fasten directly to compatible flanges. The unit is supplied without an encoder, allowing the preferred feedback device to be attached, while an optional brush tachometer supports analog velocity monitoring.

During continuous operation, the windings can carry 48.0 A RMS, a current level that produces steady torque without exceeding thermal limits. The motor has a torque constant of 1.65 N-m/A RMS, so the torque increases in proportion to the current delivered by the drive. The rated mechanical output is achieved at 2000 rpm; at this speed, the back electromotive force reaches 99.6 V RMS per 1,000 rpm, which affects the required DC-link voltage and regenerative braking behavior. An inductance of 7.2 mH influences the current rise time, while a terminal resistance of 0.129 ohm contributes to copper losses under load. Six interior poles establish the electrical frequency required from the drive for synchronous operation, and the standard encoderless adapter keeps the rear envelope short for compact machine layouts.

For brief transient events, the motor can deliver a peak torque of 230.0 N-m while accepting up to 147.0 A RMS. When the shaft is locked at 40 °C, the motor sustains a stall torque of 78.6 N-m, supporting vertical axes that must hold a load without motion. The continuous power rating reaches 13.9 kW, making the motor suitable for applications such as medium-sized hydraulic replacements or direct-drive spindles. Thermal response is represented by a time constant of 48 minutes, indicating how quickly the winding temperature changes as the applied load rises or falls.