There really isn't anything to fear when utilizing high performance frameless servo motors in your machine design. Many engineers get concerned about "air gaps" and "concentricity" when discussing frameless servo motors - but there is little to be afraid of! In applications where an embedded motor design makes sense, the application shaft that the frameless motor will be mounted on will already be machined to tolerances well within the range required for robust servo driven performance. Concentricity, run out, and axial play all must be considered in the machine mechanism itself and will typically be well in range for the KBM motor family. With the use of high energy magnet materials, the need for an ultra-tight air gap is out the window!