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HEIDENHAIN VM 182 - Printable
angular-encoders

The HEIDENHAIN VM 182 incorporates a precise two-coordinate phase grating and a scanning unit the moves of the grating without mechanical contact.  The scale is embedded in a massive, U-shaped steel profile, and can therefore be mounted directly on the machine table. Along with the measuring position in longitudinal direction, the VM 182 also captures small errors (± 1 mm) perpendicular to the direction of measurement.

The HEIDENHAIN VM 182 provides detailed information on machine accuracy with a minimum of time spent on mounting and adjustment. The VM 182 Comparator offers the following features...

  • Two-coordinate DIADUR phase grating on steel
  • 4µm grating pitch in longitudinal and transverse directions
  • Coefficient of thermal expansion - atherm= 10 ppm/K
  • Measuring lengths of 420mm, 520mm, 1020mm, 122 mm, and 1520mm
  • Measuring range in transverse direction is ±1 mm
  • Reference mark at beginning of measuring length
  • Accuracy grade in longitudinal direction is ± 1µm
  • Accuracy grade in transverse direction is ± 1.5µm

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