KMS
Okamoto
SL/EN
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SPP Series

Extra-large pitch polisher

Extra-large pitch polisher for surfaces requiring absolute flatness and mirror-like finishes — optical flats, precision mirrors, optical glass and precision-instrument reference surfaces.

No technical specification table was published for this model.

Key features

  • SPP9600: flatness of 30 nm per square metre — proportionally equivalent to a 0.006 mm height difference across the 200 m span of the Tokyo Dome; a specialized granite table minimizes thermal variation for long-term precision, backed by a dedicated surface-plate correction conditioner and an ultra-high-precision gantry facing unit
  • SPP3800: the world's only high-precision Oscar-type polishing machine compatible with 10th-generation liquid-crystal photomasks, accommodating plates up to 2400 mm diagonal; the workholding head rotates 105° for easy attachment and removal, and rust-resistant, low-dust construction protects the workpiece from scratches
  • SPP3800's granite polishing table minimizes thermal deformation, and slurry supplied from both sides of the workpiece and the centre of the pad keeps supply stable across the full surface
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