CQ1 Custom Quartz & Glass Gratings and Encoder Discs

Custom Quartz Glass Gratings & Encoder Discs

Production

Custom glass and metal encoder discs are produced through a
closed-loop manufacturing process from raw material to finished product,
suitable for high-end manufacturing requirements.

Materials & Process Options

Glass Encoder Discs

• Glass substrates such as quartz glass and soda-lime glass are used.
  After chromium coating, light and dark code tracks are formed by an
  etching process.
• Strong thermal stability, with typical accuracy of ±0.2 µm and
  maximum accuracy up to ±0.03 µm.
• Typical measurement accuracy can reach 3 µm, with maximum
  measurement accuracy up to 0.3 µm.
• Reflective design uses optical signal reflection for high-precision
  angular reading and is suitable for incremental encoder applications.
• Wear-resistant coating materials can improve acid/alkali resistance
  and wear resistance to more than three times that of ordinary materials.

Metal Encoder Discs

• Direct line-engraving process.
• Strong impact resistance but prone to deformation.
• Thermal stability is one order of magnitude lower than that of
  glass materials, which limits precision.

Technical Parameters

Customization

• Supports custom pulse counts from 256 to 5000 lines.
• Drawing-based and sample-based processing services are available.
• CAD drawings should specify material, tolerance, thickness and
  other required details.
• Drawings should clearly specify the required manufacturing result,
  including positive/negative plate distinction and defect acceptance
  criteria such as allowable defects under specified magnification.
• Specifications such as Ø60 mm diameter and 1 mm thickness can be customized.

Product Features & Applications

• Glass encoder disc accuracy can reach 0.2 µm and is suitable for
  high-precision measurement applications such as machinery
  manufacturing and CNC machine tools.
• Incremental encoders measure angular displacement through pulse
  counting, while reflective designs improve signal capture efficiency.
• Custom specifications are available to suit different equipment requirements.

Packaging & Support

Drawing Requirements

Please provide a CAD drawing whenever possible. If a CAD drawing
cannot be provided, please provide a sketch that accurately describes
the required specifications.