A PEEK bushing is often specified where a metal one failed, and it is often specified with the metal component's clearances. That is the single most common cause of seizure.<\/p>\n\n
PEEK \u968f\u6e29\u5ea6\u7684\u81a8\u80c0\u91cf\u7ea6\u4e3a\u94a2\u6750\u7684\u4e94\u500d\u3002\u51b7\u6001\u95f4\u9699 0.05 mm \u7684\u886c\u5957\u5728 150 \u00b0C \u4e0b\u4e0e\u94a2\u8f74\u914d\u5408\u8fd0\u8f6c\uff0c\u53ef\u80fd\u628a\u8fd9\u70b9\u95f4\u9699\u5168\u90e8\u5403\u6389\u5e76\u5f00\u59cb\u54ac\u4f4f\u3002\u89c4\u5219\u662f\u6309\u6700\u9ad8\u4f7f\u7528\u6e29\u5ea6\u8ba1\u7b97\u5dee\u5f02\u81a8\u80c0\uff0c\u518d\u5728\u6b64\u57fa\u7840\u4e0a\u52a0\u8fd0\u8f6c\u4f59\u91cf\u2014\u2014\u5c31\u8fd0\u8f6c\u914d\u5408\u672c\u8eab\u800c\u8a00\uff0c\u901a\u5e38\u4e3a\u76f4\u5f84\u7684\u767e\u5206\u4e4b 0.1 \u5230 0.2\u3002<\/p>\n\n
\u8fd8\u6709\u4e24\u70b9\u8981\u8003\u8651\u3002PEEK \u5438\u6e7f\u6781\u5c11\uff0c\u8fd9\u662f\u5b83\u76f8\u5bf9\u5c3c\u9f99\u7684\u4f18\u52bf\u4e4b\u4e00\uff0c\u56e0\u6b64\u65e0\u9700\u9884\u7559\u5438\u6e7f\u4f59\u91cf\u3002\u4f46\u5b83\u5bfc\u70ed\u6027\u5dee\uff0c\u6469\u64e6\u70ed\u4f1a\u5728\u8f74\u627f\u8868\u9762\u805a\u96c6\uff0c\u4f7f\u5c40\u90e8\u6e29\u5ea6\u8fdc\u9ad8\u4e8e\u4f60\u8bbe\u8ba1\u6240\u4f9d\u636e\u7684\u73af\u5883\u6e29\u5ea6\u3002\u78b3\u586b\u5145\u724c\u53f7\u5728\u6b64\u6709\u5e2e\u52a9\uff0c\u56e0\u4e3a\u586b\u5145\u6599\u663e\u8457\u63d0\u5347\u4e86\u5bfc\u70ed\u6027\u3002\u5728\u886c\u5957\u5e72\u8fd0\u8f6c\u4e14\u6e29\u5ea6\u8f83\u9ad8\u7684\u573a\u5408\uff0c\u767e\u5206\u4e4b 30 \u78b3\u7ea4 PEEK \u901a\u5e38\u662f\u6b63\u786e\u7684\u8d77\u70b9\uff0c\u5e76\u5e94\u914d\u4ee5\u504f\u5927\u7684\u5185\u5b54\u548c\u6709\u8db3\u591f\u58c1\u539a\u4ee5\u627f\u53d7\u73af\u5411\u5e94\u529b\u7684\u58c1\u9762\u3002<\/p>\n\n","protected":false},"excerpt":{"rendered":"
PEEK \u886c\u5957\u5931\u6548\u7684\u539f\u56e0\u4e2d\uff0c\u6700\u5e38\u89c1\u7684\u4e00\u4e2a\u662f\uff1a\u6750\u6599\u8fbe\u5230\u4f7f\u7528\u6e29\u5ea6\u540e\u8fd0\u8f6c\u95f4\u9699\u4e0d\u8db3\u3002<\/p>\n","protected":false},"author":193679612,"featured_media":179,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"The clearance and interference numbers that matter when designing PEEK bushings, including thermal expansion and moisture effects.","jetpack_seo_html_title":"Designing PEEK Bushings: Clearance Numbers | Top Plastic","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_tp_seo_title":"Designing PEEK Bushings: Clearance Numbers | Top Plastic","_tp_seo_desc":"The clearance and interference numbers that matter when designing PEEK bushings, including thermal expansion and moisture effects.","_tp_summary":"","_tp_updated":"","_jetpack_feature_clip_id":0,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[132593],"tags":[132591],"class_list":["post-178","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-machining","tag-machining"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pcp8Cz-2S","jetpack-related-posts":[{"id":154,"url":"https:\/\/cntopplastics.com\/zh\/cnc-tolerance-engineering-plastics\/","url_meta":{"origin":178,"position":0},"title":"\u5de5\u7a0b\u5851\u6599\u5b9e\u9645\u80fd\u8fbe\u5230\u4ec0\u4e48\u516c\u5dee\u6c34\u5e73\uff1f","author":"jessemei","date":"2026-03-12","format":false,"excerpt":"Plastics are not metals, and the tolerance table you use for steel will get you into trouble. Here are realistic numbers by material and size.","rel":"","context":"\u5728\u201cMachining\u201d\u4e2d","block_context":{"text":"Machining","link":"https:\/\/cntopplastics.com\/zh\/category\/machining\/"},"img":{"alt_text":"What tolerance can you actually hold in engineering plastics?","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cnc-tolerance-engineering-plastics.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cnc-tolerance-engineering-plastics.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cnc-tolerance-engineering-plastics.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-cnc-tolerance-engineering-plastics.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":164,"url":"https:\/\/cntopplastics.com\/zh\/food-processing-wear-parts\/","url_meta":{"origin":178,"position":1},"title":"\u98df\u54c1\u52a0\u5de5\u8010\u78e8\u4ef6\uff1aPOM\u3001UHMW-PE \u548c PEEK \u4e4b\u95f4\u5982\u4f55\u53d6\u820d","author":"jessemei","date":"2026-02-05","format":false,"excerpt":"Three materials cover most food-line wear applications. The deciding factor is usually cleaning regime and temperature, not load.","rel":"","context":"\u5728\u201cIndustry Applications\u201d\u4e2d","block_context":{"text":"Industry Applications","link":"https:\/\/cntopplastics.com\/zh\/category\/industry-applications\/"},"img":{"alt_text":"Food-processing wear parts: choosing between POM, UHMW-PE and PEEK","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-processing-wear-parts.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-processing-wear-parts.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-processing-wear-parts.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-processing-wear-parts.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":138,"url":"https:\/\/cntopplastics.com\/zh\/peek-grade-selection\/","url_meta":{"origin":178,"position":2},"title":"\u672a\u586b\u5145\u3001\u767e\u5206\u4e4b 30 \u73bb\u7ea4\u6216\u767e\u5206\u4e4b 30 \u78b3\u7ea4 PEEK\uff1a\u4e0d\u540c\u5de5\u51b5\u9009\u54ea\u79cd\u724c\u53f7","author":"jessemei","date":"2026-05-07","format":false,"excerpt":"The reinforced grades cost more and are not automatically better. Picking the wrong one costs you impact strength or bearing performance.","rel":"","context":"\u5728\u201cMaterial Guide\u201d\u4e2d","block_context":{"text":"Material Guide","link":"https:\/\/cntopplastics.com\/zh\/category\/material-guide\/"},"img":{"alt_text":"Unfilled, 30 percent glass or 30 percent carbon PEEK: which grade for which job","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-grade-selection.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-grade-selection.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-grade-selection.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-grade-selection.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":94,"url":"https:\/\/cntopplastics.com\/zh\/new-cnc-machining-centre\/","url_meta":{"origin":178,"position":3},"title":"\u5e38\u5e73\u65b0\u4e94\u8f74\u52a0\u5de5\u4e2d\u5fc3\u6295\u5165\u4f7f\u7528","author":"jessemei","date":"2026-10-01","format":false,"excerpt":"The new machine lets us finish complex parts from a single set-up, which matters most for PEEK and PEI components where re-clamping is where tolerances are lost.","rel":"","context":"\u5728\u201cCompany News\u201d\u4e2d","block_context":{"text":"Company News","link":"https:\/\/cntopplastics.com\/zh\/category\/company-news\/"},"img":{"alt_text":"New five-axis machining centre commissioned in Changping","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-new-cnc-machining-centre.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-new-cnc-machining-centre.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-new-cnc-machining-centre.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-new-cnc-machining-centre.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":96,"url":"https:\/\/cntopplastics.com\/zh\/peek-vs-pei-which-high-temp\/","url_meta":{"origin":178,"position":4},"title":"PEEK \u8fd8\u662f PEI\uff1f\u4e24\u6b3e\u4e3b\u529b\u9ad8\u6e29\u5851\u6599\u5982\u4f55\u53d6\u820d","author":"jessemei","date":"2026-09-24","format":false,"excerpt":"Both run above 170 C. PEI costs a third of PEEK. Here is where PEI is genuinely the better part and where it quietly fails.","rel":"","context":"\u5728\u201cMaterial Guide\u201d\u4e2d","block_context":{"text":"Material Guide","link":"https:\/\/cntopplastics.com\/zh\/category\/material-guide\/"},"img":{"alt_text":"PEEK or PEI? Choosing between the two workhorse high-temperature plastics","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pei-which-high-temp.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pei-which-high-temp.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pei-which-high-temp.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pei-which-high-temp.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":172,"url":"https:\/\/cntopplastics.com\/zh\/oil-gas-seal-components\/","url_meta":{"origin":178,"position":5},"title":"\u6cb9\u6c14\u884c\u4e1a\u7528\u5bc6\u5c01\u4ef6\u4e0e\u6321\u5708\u6750\u6599","author":"jessemei","date":"2025-12-25","format":false,"excerpt":"High pressure, rapid gas decompression and sour service eliminate most polymers immediately. What survives, and what to specify.","rel":"","context":"\u5728\u201cIndustry Applications\u201d\u4e2d","block_context":{"text":"Industry Applications","link":"https:\/\/cntopplastics.com\/zh\/category\/industry-applications\/"},"img":{"alt_text":"Seal and back-up ring materials for oil and gas","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-bushing-tolerances.jpg?fit=1000%2C1000&ssl=1","_links":{"self":[{"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/posts\/178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/users\/193679612"}],"replies":[{"embeddable":true,"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/comments?post=178"}],"version-history":[{"count":3,"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/posts\/178\/revisions"}],"predecessor-version":[{"id":481,"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/posts\/178\/revisions\/481"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/media\/179"}],"wp:attachment":[{"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/media?parent=178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/categories?post=178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cntopplastics.com\/zh\/wp-json\/wp\/v2\/tags?post=178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}