Relative encoder hollow shaft

Relative encoder hollow shaft The traditional photoelectric encoder code plate is made of glass, metal and plastic. The glass code plate is a thin line deposited on the glass. Its thermal stability and accuracy can meet the general standard and general requirements, but it is easy to be broken. The metal code plate is not easy to be broken because of the metal's thickness, so its thermal stability is one order of magnitude worse than that of the glass code plate....

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