{"id":2793,"date":"2026-05-22T08:28:13","date_gmt":"2026-05-22T00:28:13","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=2793"},"modified":"2026-05-22T08:28:14","modified_gmt":"2026-05-22T00:28:14","slug":"what-is-the-service-life-of-granite-precision-gauges","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/fr\/2026\/05\/22\/what-is-the-service-life-of-granite-precision-gauges\/","title":{"rendered":"What is the service life of granite precision gauges?"},"content":{"rendered":"

I. Conventional Service Life (Industry Actual Tests National Standard Experience)
000\/00 Grade Ultra-Precision Grade (CMM bases, metrology room standard parts)
Constant temperature and humidity metrology room, no impact, standardized use: 20\u201340 years. Flatness and perpendicularity accuracy decay extremely slowly; regular re-measurement and fine-tuning allow for long-term use.
0 Grade Precision Grade (Laboratories, precision machining workshops)
Dry workshop, light-load use, no bumps: 15\u201330 years.
1\/2 Grade Ordinary Inspection Grade (Ordinary machining, fitter marking)
Ordinary workshop, occasional bumps, heavy-load use: 8\u201315 years. Accuracy will slowly decline, but it can be downgraded for continued use.
Material Key: Jinan Blue Granite has high density, a compact structure, and extremely low water absorption, making its service life over 30% longer than Indian stone and ordinary black granite.
II. Why is the service life of granite much longer than that of cast iron?
Never rusts: Natural stone does not oxidize or corrode, eliminating the problem of rust and deformation found in cast iron gauges;
Extremely stable: Very small coefficient of thermal expansion, minimal deformation due to temperature changes, and remains undeformed over the long term;
High hardness and wear resistance: Mohs hardness of 6\u20137, wear-resistant and scratch-resistant, not easily scratched;
Non-magnetic: No magnetic properties, does not attract iron filings, and will not deform due to magnetic field stress.
III. 3 Core Factors Affecting Service Life<\/p>\n\n\n\n

    \n
  1. Fatal Damage (Directly and significantly shortens service life)
    Severe impact, heavy object strikes \u2192 Internal hidden cracks, chipped edges, permanent accuracy failure;
    Long-term exposure to strong acids, strong alkalis, and oil contamination \u2192 Surface micropores become contaminated, accuracy fails;
    Direct sunlight exposure, severe temperature differences \u2192 Tiny stress deformation.<\/li>\n\n\n\n
  2. Environment
    Constant temperature and humidity metrology room: Maximizes service life;
    Damp, dusty, open-air workshops: Shortens service life by over 40%.<\/li>\n\n\n\n
  3. Maintenance
    Regular cleaning, applying specialized maintenance oil, gentle handling: Doubles the service life;
    Rough use, lack of cleaning, heavy object crushing: Accuracy rapidly fails within 5 years.
    IV. Practical Usage Suggestions (Extending Service Life)
    00\/000 grade high-precision parts are strictly forbidden in ordinary workshops and must be kept in constant temperature metrology rooms;
    Granite squares \/ surface plates must not be struck or impacted; use soft lifting straps for hoisting;
    Perform regular accuracy re-measurements; 00 grade is recommended for annual calibration, and 1 grade every 2\u20133 years;
    Avoid long-term contact with water, cutting fluids, strong acids, and strong alkalis.
    V. Summary
    High-quality Jinan Blue Standardized use: Starting from 20 years, can be used for 30\u201340 years;
    Ordinary granite Rough use: 8\u201312 years;
    After accuracy declines, high-precision gauges can be downgraded to ordinary inspection gauges for continued use, with almost no complete scrapping.<\/li>\n<\/ol>\n\n\n\n
    \"\"<\/figure>","protected":false},"excerpt":{"rendered":"

    I. Conventional Service Life (Industry Actual Tests National Standard Experience)000\/00 Grade Ultra-Precision Grade (CMM bases, metrology room standard parts)Constant temperature and humidity metrology room, no impact, standardized use: 20\u201340 years. Flatness and perpendicularity accuracy decay extremely slowly; regular re-measurement and fine-tuning allow for long-term use.0 Grade Precision Grade (Laboratories, precision machining workshops)Dry workshop, light-load use,…<\/p>","protected":false},"author":1,"featured_media":1278,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_analysis_target_kw":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[35],"tags":[],"class_list":["post-2793","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"taxonomy_info":{"category":[{"value":35,"label":"NEWS"}]},"featured_image_src_large":["https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/01\/\u5e73\u884c\u89c42-1024x768.jpg",1024,768,true],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/fr\/author\/jtlcnc\/"},"comment_info":0,"category_info":[{"term_id":35,"name":"NEWS","slug":"news","term_group":0,"term_taxonomy_id":35,"taxonomy":"category","description":"","parent":0,"count":204,"filter":"raw","cat_ID":35,"category_count":204,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/comments?post=2793"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2793\/revisions"}],"predecessor-version":[{"id":2794,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2793\/revisions\/2794"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/1278"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=2793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=2793"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=2793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}