Product Description:

The B-104-A-34-B3 is a brushless servo motor manufactured by Kollmorgen for the Kollmorgen Goldline B and BH Motors series. It is intended for CNC, packaging, and material-handling axes where a servo controller must regulate speed, torque, and position with millisecond response. By converting three-phase drive current into controlled mechanical output, the motor forms the electromechanical link between a digital drive and the machine load.

During continuous operation, the motor produces a stall torque of 1.55 N·m while drawing 3 A rms from the servo amplifier, establishing its steady-state thermal rating. The electromagnetic design links current to torque through a constant of 0.512 N·m/A rms, so current feedback translates directly into shaft load estimates inside the controller. Mechanical power output is rated at 0.90 kW, and the frame can momentarily reach a peak torque of 4.38 N·m for rapid acceleration before the drive enforces time limits. A maximum shaft speed of 5600 rpm permits high surface velocities on small pulleys or lead screws. The phase resistance is 5.3 Ω, which limits current flow through the windings. The motor has no front shaft seal or rear shaft extension, simplifying alignment with gearheads or couplings.

Dynamic response is influenced by the stator inductance of 28.1 mH, which governs how quickly phase current can change when the drive issues a new torque command. A back-EMF constant of 31 V rms/krpm indicates the voltage returned to the DC bus during regeneration and assists with bus capacitor selection. The lightweight rotor has an inertia of 0.0000461 kg·m², enabling tight tracking of complex motion profiles. For vertical or load-holding axes, the integrated electromechanical brake engages at 24 VDC and draws 0.93 A. The brake secures the shaft with 2.3 N·m of static torque when engaged. Power and feedback conductors attach through a bayonet connector supplied with mating plugs.