The vertical alignment in the spindle means that metal chips can accumulate to the surface area from the workpiece and should be cleared. Linear, rotary and angle encoders may be used with servo motors as well as other systems to reduce faults by checking the machine is relocating as predicted. https://cncmachinetools55295.designertoblog.com/63440368/the-fact-about-precision-machining-center-supplier-that-no-one-is-suggesting