{"id":2146,"date":"2022-12-22T12:00:00","date_gmt":"2022-12-22T04:00:00","guid":{"rendered":"https:\/\/mccchains.com\/2022\/12\/22\/important-tests-for-chain-2"},"modified":"2025-08-20T16:08:52","modified_gmt":"2025-08-20T08:08:52","slug":"important-tests-for-chain","status":"publish","type":"post","link":"https:\/\/mccchains.com\/en\/important-tests-for-chain","title":{"rendered":"What are important tests for chains?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ensuring the quality of roller chains is essential for reliable performance and long service life. At MAXTOP, every chain goes through a series of inspections and tests to confirm that it meets international standards. Below are the most important roller chain tests, explained with their purposes and benefits.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1. Push-Out Force Test for Roller Chains<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong> Checks the tightness between the outer plate and pin, and the inner plate and bush.<\/li>\n\n\n\n<li><strong>Why It Matters:<\/strong> If the push-out force is insufficient, pins may separate from outer plates or bushes may detach from inner plates, leading to chain failure.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Extended Reading: <a href=\"https:\/\/blog.mccchains.com\/2023\/05\/12\/push-out-force-test\">Push-Out Force<\/a><\/em><\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. Chain Length Measurement<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/i0.wp.com\/mccchains.com\/wp-content\/uploads\/2022\/12\/Length-Measurement.jpg?quality=100&#038;ssl=1\" alt=\"\" class=\"wp-image-4023\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong> Ensures the pitch of the chain after assembly remains within standard tolerance.<\/li>\n\n\n\n<li><strong>Key Points:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Incorrect length can prevent proper sprocket engagement or cause operational noise.<\/li>\n\n\n\n<li>Example: ANSI 80 pitch should be 25.4 mm, but due to production tolerances, exact precision is impossible. Accumulated tolerances may result in a chain that is too long or too short.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. Pre-Stretching (Pre-Loading) of Roller Chains<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Process:<\/strong> After assembly, the chain is subjected to an initial load equal to one-third of its breaking load.<\/li>\n\n\n\n<li><strong>Benefits:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Makes each component fit more tightly.<\/li>\n\n\n\n<li>Reduces initial wear during operation.<\/li>\n\n\n\n<li>Improves fatigue resistance and extends service life.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. Salt Spray Test for Corrosion Resistance<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Standard:<\/strong> Performed according to ASTM B117.<\/li>\n\n\n\n<li><strong>Method:<\/strong> A 5% salt solution is sprayed on the chain sample, and rust resistance is measured over time.<\/li>\n\n\n\n<li><strong>Applications:<\/strong> Used for testing surface-coated chains, stainless steel chains, and anti-rust lubricants.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Extended Reading: <a href=\"https:\/\/blog.mccchains.com\/2020\/12\/15\/salt-spray-test\">Anti-Corrosion Chain Testing Standard \u2013 Salt Spray Test<\/a><\/em><\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5. Chain Wear Test<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"748\" height=\"523\" src=\"https:\/\/i0.wp.com\/mccchains.com\/wp-content\/uploads\/2022\/12\/Wear-Testing-Machine.jpg?quality=100&#038;ssl=1\" alt=\"\" class=\"wp-image-4020\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong> Evaluates the wear resistance and durability of roller chains.<\/li>\n\n\n\n<li><strong>Notes:<\/strong>\n<ul class=\"wp-block-list\">\n<li>No universal international standard exists, but JCAS (Japan Chain Association) has defined wear test conditions for motorcycle chains.<\/li>\n\n\n\n<li>MAXTOP\u2019s wear testing machine was designed with reference to JCAS standards.<\/li>\n\n\n\n<li>Because testing methods vary by manufacturer, results are not directly comparable.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Extended Reading: <a href=\"https:\/\/blog.mccchains.com\/2021\/05\/17\/roller-chain-wearing-test\">Wearing Test Method for Roller Chains<\/a><\/em><\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>6. Ultimate Strength (Breaking Load \/ Tensile Strength) Test<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"800\" height=\"437\" src=\"https:\/\/i0.wp.com\/mccchains.com\/wp-content\/uploads\/2022\/12\/Tensile-Test-Machine.jpg?quality=100&#038;ssl=1\" alt=\"\" class=\"wp-image-4017\"\/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong> Verifies that the ultimate strength of the chain exceeds the minimum set by international standards.<\/li>\n\n\n\n<li><strong>Importance:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Low results may indicate poor heat treatment or missing components.<\/li>\n\n\n\n<li>Chains with insufficient ultimate strength are prone to breakage during use.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Extended Reading: <a href=\"https:\/\/blog.mccchains.com\/2021\/01\/18\/tensile-test\">Tensile Test Method for Roller Chains<\/a><\/em><\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>7. Fatigue Test for Roller Chains<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong> Determines the maximum tensile load under which a chain can operate indefinitely without breaking.<\/li>\n\n\n\n<li><strong>Why It\u2019s Important:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Fatigue strength is closely related to real operating conditions and is considered the most important quality indicator.<\/li>\n\n\n\n<li>Ultimate strength and fatigue strength are related but not identical. High ultimate strength does not always mean high fatigue resistance.<\/li>\n\n\n\n<li>Since fatigue testing is costly and time-consuming, many manufacturers estimate fatigue strength as one-sixth to one-tenth of the ultimate strength.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Extended Reading: <a href=\"https:\/\/blog.mccchains.com\/2023\/02\/22\/fatigue-test-method-for-roller-chain\">Fatigue Test Method for Roller Chains<\/a><\/em><\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Ultimate Strength vs. Fatigue Strength: Key Differences<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ultimate Strength:<\/strong> A destructive test that forces the chain to fail under stress. Useful as a reference but not the most critical factor.<\/li>\n\n\n\n<li><strong>Fatigue Strength:<\/strong> Reflects real-world chain performance, making it the most reliable indicator of durability.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion: Ensuring Roller Chain Quality Through Testing<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">From push-out force to fatigue testing, each inspection plays a vital role in ensuring the safety, performance, and durability of roller chains. Among these, fatigue testing is the most reliable indicator of long-term quality, while other tests ensure dimensional accuracy, wear resistance, and corrosion protection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By performing these important chain tests, MAXTOP guarantees consistent quality, helping manufacturers and end users choose reliable roller chains for their applications.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/mccchains.com\/en\/contact\">Contact Us<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MAXTOP roller chains undergo strict tests\u2014push-out force, length, wear, tensile, fatigue, and corrosion\u2014to ensure durability and trusted quality.<\/p>\n","protected":false},"author":5,"featured_media":1497,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[166],"tags":[173,174],"class_list":["post-2146","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chain-knowledge","tag-chain-testing","tag-chain-quality"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/mccchains.com\/wp-content\/uploads\/migra\/blog\/7b7520fbe99b4536fcbe1fd47d0afde36a5a8b41.jpg?quality=100&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/posts\/2146","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/comments?post=2146"}],"version-history":[{"count":2,"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/posts\/2146\/revisions"}],"predecessor-version":[{"id":4028,"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/posts\/2146\/revisions\/4028"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/media\/1497"}],"wp:attachment":[{"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/media?parent=2146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/categories?post=2146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mccchains.com\/en\/wp-json\/wp\/v2\/tags?post=2146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}