Product Description:

The TBMS-6051-A is a frameless brushless motor segment produced by Kollmorgen within the TBM Frameless Motors series. Supplied as separate rotor and stator components, it is intended for direct integration into articulated joints, gimbals, or spindle heads where compact, high-torque actuation is required without an external housing. By removing the motor frame, the design saves space and lets the magnetic core couple directly to load shafts for precise and repeatable servo performance in industrial automation assemblies.

This model delivers a continuous torque of 1.08 N-m while drawing a continuous phase current of 5.48 Arms. At its rated operating point, the rotor can maintain 2065 RPM, matching speed to medium-power motion axes. The electromagnetic conversion efficiency is characterized by a torque constant of 0.215 N-m/Arms, indicating the mechanical output per ampere, and a phase-to-phase inductance of 0.6 mH that shapes current rise time for responsive servo control. Additional construction data include a 59.06 mm outside diameter, a 66.04 mm axial length, and a 28.7 mm through-bore that accepts hollow shafts or cable feed-throughs. Copper windings show 0.763 ohms of DC resistance, supporting a continuous power rating of 159 W while limiting Joule heating. The assembled rotor-stator set weighs only 0.571 kg, easing load on bearings and support structures.

For transient events such as rapid indexing, the motor can generate a peak torque of 5.08 N-m before reaching magnetic saturation. Commutation is referenced to a back electromotive force constant of 13 Vrms/kRPM, allowing drives to forecast voltage demands across the full speed range of a 48 VDC bus. Low energy storage in the rotor, quantified by an inertia value of 0.0000475 kg-m², supports fast acceleration and minimal overshoot in compact robotic joints and precision rotary stages.