the model a58hb absolute encoder offers a high performance solution for your absolute feedback needs. it provides maintenance-free feedback thanks to its innovative battery-free and gear-free multi-turn technology. this encoder is especially suited for applications where retention of position information after loss of system power is a must. its rugged magnetic technology and high ip rating make the model a58hb an excellent choice, even in tough industrial environments. available with bores up to 3/8″ or 14 mm and two flexible mounting options, the model a58hb absolute encoder is easily designed into a variety of applications.