{"id":3076,"date":"2026-03-24T07:06:47","date_gmt":"2026-03-24T07:06:47","guid":{"rendered":"https:\/\/www.sapphiretube.com\/?post_type=product&p=3076"},"modified":"2026-03-24T07:06:47","modified_gmt":"2026-03-24T07:06:47","slug":"sapphire-spacers-unpolished-custom-high-strength-precision-support-components","status":"publish","type":"product","link":"https:\/\/www.sapphiretube.com\/ja\/product\/sapphire-spacers-unpolished-custom-high-strength-precision-support-components\/","title":{"rendered":"Sapphire Spacers Unpolished Custom High-Strength Precision Support Components"},"content":{"rendered":"

Product Description<\/strong><\/span><\/h2>\n

Unpolished sapphire spacers are precision-engineered support components manufactured from synthetic single-crystal sapphire (Al2O3 \u2265 99.99% purity). These components are primarily used as\u00a0mechanical positioning, spacing, and load-bearing parts<\/strong>, rather than optical transmission elements.<\/span><\/p>\n

Unlike polished sapphire windows or lenses, these spacers retain a\u00a0ground or lapped raw surface<\/strong>, significantly reducing processing cost while maintaining sapphire\u2019s superior mechanical, thermal, and chemical performance. They are widely adopted in semiconductor manufacturing systems, vacuum equipment, high-temperature tooling, and precision industrial assemblies.<\/span><\/p>\n

 <\/p>\n

\"\" \"\"<\/p>\n

\n

\n

Material Advantages<\/strong><\/span><\/h2>\n

\"\"Sapphire is one of the hardest and most chemically stable engineering materials available for industrial applications. Compared with glass, quartz, and technical ceramics, sapphire offers a unique combination of strength, stability, and durability.<\/span><\/p>\n

    \n
  • Extreme Hardness<\/strong>\u00a0\u2013 Mohs hardness level 9, second only to diamond<\/span><\/li>\n
  • Outstanding Wear Resistance<\/strong>\u00a0\u2013 long service life under friction and repeated loading<\/span><\/li>\n
  • High Temperature Capability<\/strong>\u00a0\u2013 continuous use up to 1600\u00b0C<\/span><\/li>\n
  • Excellent Chemical Inertness<\/strong>\u00a0\u2013 resistant to acids, alkalis, plasma, and solvents<\/span><\/li>\n
  • Low Thermal Expansion<\/strong>\u00a0\u2013 ensures dimensional stability under thermal cycling<\/span><\/li>\n
  • Non-porous & Non-outgassing<\/strong>\u00a0\u2013 suitable for high and ultra-high vacuum systems<\/span><\/li>\n<\/ul>\n
    \n

    Unpolished Surface Characteristics<\/strong><\/span><\/h2>\n

    \"\"Unpolished sapphire spacers are processed with grinding or lapping instead of optical polishing, resulting in:<\/span><\/p>\n

      \n
    • Functional, non-optical surface finish<\/span><\/li>\n
    • Lower manufacturing cost compared to mirror-polished parts<\/span><\/li>\n
    • Improved friction control for mechanical contact applications<\/span><\/li>\n
    • Reliable flatness for spacing and stacking structures<\/span><\/li>\n<\/ul>\n

      This surface condition makes them ideal for\u00a0structural support, height control, isolation, and mechanical positioning<\/strong>.<\/span><\/p>\n

      \n

      Manufacturing Capabilities<\/strong><\/span><\/h2>\n

      \"\"We offer full custom machining based on client drawings and application requirements:<\/span><\/p>\n

        \n
      • Precision slicing from sapphire boules<\/span><\/li>\n
      • CNC grinding and profiling<\/span><\/li>\n
      • Inner and outer diameter machining<\/span><\/li>\n
      • Step structures, grooves, slots, and special contours<\/span><\/li>\n
      • Optional chamfering, edge rounding, and beveled edges<\/span><\/li>\n
      • Ultrasonic cleaning and 100% dimensional inspection<\/span><\/li>\n<\/ul>\n

        Both\u00a0single-side and double-side unpolished finishes<\/strong>\u00a0are available based on functional needs.<\/span><\/p>\n

         <\/p>\n

        \n

        Customization Range<\/strong><\/span><\/h2>\n
          \n
        • Shape Options:<\/strong>\u00a0Round disc, ring, square, rectangular, slotted, stepped, or complex custom geometry<\/span><\/li>\n
        • Outer Diameter:<\/strong>\u00a01 mm \u2013 200 mm<\/span><\/li>\n
        • Thickness:<\/strong>\u00a00.1 mm \u2013 20 mm<\/span><\/li>\n
        • Inner Hole:<\/strong>\u00a0Custom diameter or blind hole<\/span><\/li>\n
        • Surface Type:<\/strong>\u00a0Ground \/ lapped \/ semi-finished<\/span><\/li>\n
        • Orientation:<\/strong>\u00a0C-plane standard, A-plane & R-plane optional<\/span><\/li>\n
        • Dimensional Tolerance:<\/strong>\u00a0\u00b10.02 mm to \u00b10.1 mm depending on size<\/span><\/li>\n<\/ul>\n
          \n

          Typical Application Areas<\/strong><\/span><\/h2>\n
            \n
          • Semiconductor Processing Equipment<\/strong><\/span>
            \nSpacing components for wafer carriers, etching chambers, and thermal process tools.<\/span><\/li>\n
          • Vacuum & Plasma Systems<\/strong><\/span>
            \nStructural spacers with low outgassing and high plasma resistance.<\/span><\/li>\n
          • Precision Mechanical Assemblies<\/strong><\/span>
            \nHeight control shims, alignment spacers, and vibration-resistant supports.<\/span><\/li>\n
          • High-Temperature Fixtures & Jigs<\/strong><\/span>
            \nSupport elements in furnaces and thermal treatment systems.<\/span><\/li>\n
          • Chemical Processing Equipment<\/strong><\/span>
            \nCorrosion-resistant spacers for aggressive environments.<\/span><\/li>\n<\/ul>\n
            \n

            Quality Control<\/strong><\/span><\/h2>\n

            Each unpolished sapphire spacer undergoes:<\/span><\/p>\n

              \n
            • Raw material purity verification<\/span><\/li>\n
            • Dimensional inspection (OD, ID, thickness, flatness)<\/span><\/li>\n
            • Edge and surface defect inspection<\/span><\/li>\n
            • Cleaning and anti-contamination packaging<\/span><\/li>\n<\/ul>\n
              \n

              FAQ<\/strong><\/span><\/h2>\n

              Q1: Are unpolished sapphire spacers suitable for optical use?<\/strong><\/span>
              \nA: No. These components are intended for mechanical and structural use, not for optical transmission.<\/span><\/p>\n

               <\/p>\n

              Q2: Can you produce extremely thin sapphire shims?<\/strong><\/span>
              \nA: Yes, thickness down to 0.1 mm is feasible depending on size and shape.<\/span><\/p>\n

               <\/p>\n

              Q3: Will unpolished surfaces affect assembly accuracy?<\/strong><\/span>
              \nA: No. Flatness and thickness are still precision controlled; only surface roughness differs from polished parts.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

              Sapphire spacers are precision-engineered support components manufactured from synthetic single-crystal sapphire (Al2O3 \u2265 99.99% purity). These components are primarily used as mechanical positioning, spacing, and load-bearing parts<\/strong>, rather than optical transmission elements.<\/span><\/p>","protected":false},"featured_media":3083,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[61],"product_tag":[],"class_list":{"0":"post-3076","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sapphire-components","7":"desktop-align-left","8":"tablet-align-left","9":"mobile-align-left","10":"ast-product-gallery-layout-horizontal-slider","11":"ast-product-tabs-layout-horizontal","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/product\/3076","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/comments?post=3076"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/media\/3083"}],"wp:attachment":[{"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/media?parent=3076"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/product_brand?post=3076"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/product_cat?post=3076"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.sapphiretube.com\/ja\/wp-json\/wp\/v2\/product_tag?post=3076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}