Bearingless encoders have proven themselves in numerous industries. For designers of machining centers, wind turbines, mobile vehicles, elevators or textile machines, the non-contact sensing principle opens up new flexibility: they are more compact, easy to integrate, independent of the shaft diameter and yet robust against harsh ambient impacts. They integrate in former inaccessible places and leave room for further design improvements. Overall costs from design-in to maintenance are significantly reduced.
Magnetic sensing allows for a large gap between sensor and material measure (usually a magnetic wheel or center magnet). Therefore they can be positioned separately from each other and it eliminates the need for precision ball bearings usually used in rotary encoders. And, this provides quite high installation tolerances. This provides more flexibility in design and installation. As there is no need for bearings, there is no conventional wear and tear either.
This way the encoders withstand dust, dirt or textile fibers. They are immune to shaft currents or bearing loads and robust against vibration and shock.