{"id":2699,"date":"2026-05-14T08:28:17","date_gmt":"2026-05-14T00:28:17","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=2699"},"modified":"2026-05-14T08:28:19","modified_gmt":"2026-05-14T00:28:19","slug":"in-depth-analysis-of-key-advantages-of-granite-for-cmm-platforms-bases","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/es\/2026\/05\/14\/in-depth-analysis-of-key-advantages-of-granite-for-cmm-platforms-bases\/","title":{"rendered":"In-depth Analysis of Key Advantages of Granite for CMM Platforms \/ Bases"},"content":{"rendered":"

I. Minimal internal stress, permanent non-deformation
Natural granite undergoes natural geological aging over hundreds of millions of years, completely releasing internal stress. Compared to cast iron, cast aluminum, and welded steel structures:
It does not exhibit aging creep or long-term stress rebound;
The geometric accuracy of the CMM table, crossbeam, and column remains stable for decades;
The machine maintains verticality, parallelism, and straightness over the long term, ensuring measurement repeatability and stability.<\/p>\n\n\n\n

II. Extremely low coefficient of thermal expansion, resistant to temperature variation errors
The linear expansion coefficient of granite is much lower than that of steel and cast iron:
Dimensional deformation is negligible under minor environmental temperature fluctuations and workshop day-night temperature differences;
CMMs perform micron-level precision measurement where temperature change is the largest source of error; granite significantly suppresses measurement deviations caused by thermal deformation;
It maintains high precision without strict temperature control, making it suitable for ordinary precision workshops.<\/p>\n\n\n\n

III. High rigidity strong vibration damping, resistant to vibration interference
The material is dense with high hardness and overall rigidity; loads do not cause sinking or micro-deformation;
The natural crystalline structure possesses excellent vibration damping and absorption properties, far superior to cast iron;
It isolates micro-vibrations from workshop cranes, machine tools, and foot traffic, preventing mis-triggering of the CMM probe and trajectory deviation, thereby improving measurement precision and stability.<\/p>\n\n\n\n

IV. High hardness and wear resistance, lasting working surface precision
Mohs hardness of 6-7, wear-resistant, resistant to scratches and wear:
The measurement platform withstands long-term placement of fixtures and workpieces without developing indentations or scratches;
The precision ground reference surface maintains ultra-high flatness for a long time, requiring minimal maintenance and eliminating the need for frequent rework.<\/p>\n\n\n\n

V. Rust-proof, corrosion-resistant, and good insulation
It is not afraid of humidity, cutting fluids, or mild acid\/alkaline fumes; it never rusts, unlike cast iron which is prone to rusting, peeling, and precision degradation;
Natural stone is insulating and non-conductive, making it suitable for CMM electrical systems with photoelectric, grating, and precision sensors, avoiding interference from static electricity and leakage current.<\/p>\n\n\n\n

VI. Uniform material, easy for ultra-precision grinding
Granite has a uniform and dense structure with no sand holes or pores:
It can be ground to a mirror-like ultra-high flatness, meeting CMM requirements for micron and sub-micron benchmarks;
It is suitable for integral machine beds, gantry crossbeams, and guide rail bases, featuring one-piece molding without assembly errors.<\/p>\n\n\n\n

VII. Good dimensional stability, suitable for large integral components
It can be made into ultra-large integral bases and gantry columns with strong integrity and no splicing seams; the machine’s geometric structure forms a rigid closed loop, making it more stable than assembled steel structures and suitable for large gantry-type CMMs.<\/p>\n\n\n\n

\"\"<\/figure>","protected":false},"excerpt":{"rendered":"

I. Minimal internal stress, permanent non-deformationNatural granite undergoes natural geological aging over hundreds of millions of years, completely releasing internal stress. Compared to cast iron, cast aluminum, and welded steel structures:It does not exhibit aging creep or long-term stress rebound;The geometric accuracy of the CMM table, crossbeam, and column remains stable for decades;The machine maintains…<\/p>","protected":false},"author":1,"featured_media":2702,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_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-2699","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\/05\/\u5fae\u4fe1\u56fe\u7247_20260512093211_40_25.png",1010,711,false],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/es\/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":206,"filter":"raw","cat_ID":35,"category_count":206,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts\/2699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/comments?post=2699"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts\/2699\/revisions"}],"predecessor-version":[{"id":2703,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts\/2699\/revisions\/2703"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/media\/2702"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/media?parent=2699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/categories?post=2699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/tags?post=2699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}