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When mounting the scanning head and the scale drum, please refer to the dimensions and notes in
the Mounting Instructions for the ERA 4x70/ERA 4x80 Scanning Head.
All mounting surfaces must be clean and free of burrs.
The specified shaft tolerances must be complied with.
The scale drum is to be fastened with all provided screws and washers.
The screws must be tightened with the specified tightening torque according to the Mounting Instructions,
and secured against unintentional loosening.
Only then are the speed values specified for the scale drums valid.
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