Product Description:

The B-804-B-B9-B3-231 is a brushless servo motor manufactured by Kollmorgen and supplied within the Kollmorgen Goldline B and BH Motors series. Designed for closed-loop industrial automation, the unit converts drive current into precise shaft torque and speed. This controlled conversion allows machine axes to follow programmed motion profiles without mechanical slip while the connected feedback system monitors rotor movement and provides the position data needed by the drive.

The motor delivers a continuous armature current of 48.0 A rms, which indicates the thermal limit for sustained load conditions, while its phase inductance of 7.2 mH influences the current rise time that the drive must manage during dynamic moves. A maximum operating speed of 2000 rpm allows the shaft to remain synchronized with resolver or encoder feedback throughout the operating range. During rapid indexing, the electromagnetic structure can generate up to 230.0 N·m of peak torque, and the stator-slot design supports a shaft output of 13.9 kW at the rated operating point. The motor has a DC resistance of 0.129 Ω and a torque constant of 1.65 N·m/A rms. Its 250 V rms line-voltage limit must also be considered when selecting and configuring the companion drive.

A back EMF constant of 99.6 V rms/krpm indicates the voltage generated as rotational speed increases, and the control platform must supply up to 147.0 A rms of peak current during acceleration phases that can reach 27,400 rad/s². The laminated rotor has an inertia of 0.00840 kg·m², balancing fast response with load stability, while the complete motor weighs 50.6 kg and requires adequate mounting support. At 25 °C, the motor can produce 83.4 N·m of continuous stall torque without shaft movement, while the available stall torque decreases to 78.6 N·m at 40 °C as the winding temperature rises. These torque values must be considered when the motor operates under sustained load or holds a stationary axis.