{"id":2494,"date":"2025-08-18T08:08:27","date_gmt":"2025-08-18T08:08:27","guid":{"rendered":"https:\/\/www.connectingrodrepair.com\/blog\/?p=2494"},"modified":"2026-05-13T09:19:51","modified_gmt":"2026-05-13T09:19:51","slug":"crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines","status":"publish","type":"post","link":"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/","title":{"rendered":"Crankpin Bearings for MAK, MAN, Yanmar, and Daihatsu Engines"},"content":{"rendered":"\n<p>The crankpin bearing, also known as the rod bearing journal, is essential for attaching the crankshaft to the connecting rod and ensuring smooth rotation under large loads. Top-quality <strong><a href=\"https:\/\/rebabbittingbearing.com\/special-size-engine-bearings-undersize-marine-engine-bearings-crankpin-and-main-journal-engine-bearings-ra-power-solutions\/\">crankpin bearings<\/a><\/strong> are used in powerful diesel engines manufactured by MAK, MAN, Yanmar, and Daihatsu to reduce friction, wear, and engine failure.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"807\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Tri-Metal-Bearing.jpeg\" alt=\"Tri Metal Bearing\" class=\"wp-image-2498\" style=\"width:343px;height:auto\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Tri-Metal-Bearing.jpeg 768w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Tri-Metal-Bearing-286x300.jpeg 286w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><figcaption class=\"wp-element-caption\"><strong>Tri-Metal Bearings<\/strong><\/figcaption><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>RA Power Solutions: Your Trusted Source<\/strong><\/h2>\n\n\n\n<p>With over 46+ years of global engineering excellence, RA Power Solutions maintains a ready stock of both standard and undersized <strong><a href=\"https:\/\/rebabbittingbearing.com\/special-size-engine-bearings-undersize-marine-engine-bearings-crankpin-and-main-journal-engine-bearings-ra-power-solutions\/\">crankpin and main journal bearings<\/a><\/strong> for leading engine types, including Yanmar, Daihatsu, MAK, and MAN.<\/p>\n\n\n\n<p><strong>Why undersized bearings matter:<\/strong><\/p>\n\n\n\n<ul>\n<li>After crankshaft grinding, standard-size bearings often no longer fit.<\/li>\n\n\n\n<li>Ship owners can\u2019t wait for long delivery leads\u2014<strong><a href=\"https:\/\/rapowersolutions.com\/BlogDetails.aspx?blogname=undersize-bearings-of-yanmar-man-daihatsu-mak-engines\">undersized bearings<\/a><\/strong> must be available immediately to avoid costly downtime.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"840\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Undersize-Crank-Pin-Bearings.jpeg\" alt=\"Undersize Crank Pin Bearings\" class=\"wp-image-2496\" style=\"width:345px;height:auto\" title=\"Undersize Crankpin Bearing\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Undersize-Crank-Pin-Bearings.jpeg 768w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Undersize-Crank-Pin-Bearings-274x300.jpeg 274w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><figcaption class=\"wp-element-caption\">      <strong>Undersized Crankpin Bearings                  <\/strong><\/figcaption><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>Comprehensive Inventory\u2014Models &amp; Sizes<\/strong><\/h3>\n\n\n\n<p><strong>RA Power Solutions<\/strong> holds a wide range of undersize and standard bearings. A few examples include:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Engine Make<\/strong><\/td><td><strong>Models &amp; Undersize Ranges<\/strong><\/td><\/tr><tr><td><strong>Yanmar<\/strong><\/td><td>S185L: 0.80\u20132.00 mm<br><br>6N18AL-DN\/DV: 0.40\u20132.80 mm<\/td><\/tr><tr><td><strong>Daihatsu<\/strong><\/td><td>6DL-16: 2.50\u20134.00 mm<br><br>5DC-17: 0.50\u20134.00 mm<br><br>5DK-20: up to 5.00 mm<br><br>8DKM-28: 0.50\u20134.00 mm<\/td><\/tr><tr><td><strong>MAK<\/strong><\/td><td>8M20: 1.00\u20132.00 mm undersize<\/td><\/tr><tr><td><strong>MAN<\/strong><\/td><td>CME 5L 16\/24: 0.50\u20132.50 mm<br><br>6L 23\/30 H: select step undersizes<br><br>9ASL 25\/30: 2.50\u20134.00 mm undersize<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">On Site Support\u2014Speed &amp; Precision<\/h3>\n\n\n\n<ul>\n<li>Technicians often carry undersized bearings directly on site, enabling immediate installation after crankshaft grinding\u2014minimizing engine downtime.<\/li>\n\n\n\n<li>Depending on location, bearings can also be dispatched by courier for urgent repairs.<\/li>\n\n\n\n<li>All bearings meet strict international quality standards, and RA Power can even manufacture custom sizes if beyond standard specifications.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"554\" height=\"721\" src=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Undersize-crankpin-bearing-ready-for-stock.jpeg\" alt=\"Undersize crankpin bearing ready for stock\" class=\"wp-image-2495\" style=\"width:274px;height:auto\" title=\"Undersize Crankpin Bearing in Stock\" srcset=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Undersize-crankpin-bearing-ready-for-stock.jpeg 554w, https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Undersize-crankpin-bearing-ready-for-stock-231x300.jpeg 231w\" sizes=\"(max-width: 554px) 85vw, 554px\" \/><figcaption class=\"wp-element-caption\">Undersize crankpin bearing ready for stock<\/figcaption><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Why Choose RA Power Solutions for Crankpin Bearings?<\/strong><\/h2>\n\n\n\n<ul>\n<li><strong>Extensive availability<\/strong> of both standard and undersized bearings across top engine makes.<\/li>\n\n\n\n<li><strong>Immediate solution:<\/strong> Technicians can fit bearings onsite right after grinding.<\/li>\n\n\n\n<li><strong>Customization:<\/strong> Tailored sizes beyond manufacturer limits when needed.<\/li>\n\n\n\n<li><strong>Global logistics:<\/strong> Fast courier dispatch ensures timely delivery globally.<\/li>\n\n\n\n<li><strong>Quality assurance:<\/strong> Meets strict manufacturing and performance standards.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Need Bearings for MAK, MAN, Yanmar, or Daihatsu Engines?<\/strong><\/h3>\n\n\n\n<p>Contact<strong> <a href=\"http:\/\/rapowersolutions.com\">RA Power Solutions<\/a><\/strong> today for reliable, high-precision crankpin bearings:<\/p>\n\n\n\n<p><strong>Email:<\/strong> <strong><a href=\"mailto:rajshahani@rapowersolutions.com\">rajshahani@rapowersolutions.com<\/a><\/strong> or <strong><a href=\"mailto:info@rapowersolutions.com\">info@rapowersolutions.com<\/a><\/strong><\/p>\n\n\n\n<p><strong>Phone: +91-9582647131<\/strong> \/ <strong>+91-9810012383<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs:<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1755504597630\"><strong class=\"schema-faq-question\">1. <strong>What is a crankpin bearing?<\/strong><\/strong> <p class=\"schema-faq-answer\"> <strong><a href=\"https:\/\/www.connectingrodrepair.com\/blog\/undersized-bearings-crankpin-bearings-for-marine-and-diesel-engines\/\">Crankpin bearing<\/a> <\/strong>supports the crankshaft and enables smooth rotation under heavy loads.<br\/><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755504630324\"><strong class=\"schema-faq-question\">2. <strong>Why do crankpin bearings fail?<\/strong><\/strong> <p class=\"schema-faq-answer\">They usually fail due to poor lubrication, contamination, or misalignment.<br\/><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755504643137\"><strong class=\"schema-faq-question\">3. <strong>Can undersize crankpin bearings be supplied?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, undersize bearings are available after crankshaft grinding.<br\/><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755504656076\"><strong class=\"schema-faq-question\">4. <strong>Which engines use crankpin bearings?<\/strong><\/strong> <p class=\"schema-faq-answer\">Engines like MAK, MAN, Yanmar, and Daihatsu rely on crankpin bearings.<br\/><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755504667916\"><strong class=\"schema-faq-question\">5. <strong>Can crankpin bearings be replaced onsite?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, experienced engineers can replace crankpin bearings directly onboard.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>The crankpin bearing, also known as the rod bearing journal, is essential for attaching the crankshaft to the connecting rod and ensuring smooth rotation under large loads. Top-quality crankpin bearings are used in powerful diesel engines manufactured by MAK, MAN, Yanmar, and Daihatsu to reduce friction, wear, and engine failure. RA Power Solutions: Your Trusted &hellip; <a href=\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Crankpin Bearings for MAK, MAN, Yanmar, and Daihatsu Engines&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":2499,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"link","meta":{"footnotes":""},"categories":[520,523,521],"tags":[535,537,525,527,529,536],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Crankpin Bearings for Marine Engines | RA Power Solutions<\/title>\n<meta name=\"description\" content=\"Standard &amp; undersized crankpin bearings for MAN, MAK, Yanmar &amp; Daihatsu engines. Fast supply, onsite fitting, and global service.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Crankpin Bearings for Marine Engines | RA Power Solutions\" \/>\n<meta property=\"og:description\" content=\"Standard &amp; undersize crankpin bearings for MAN, MAK, Yanmar &amp; Daihatsu engines. 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Fast supply, onsite fitting, and global service.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Undersize-crankpin-bearing-ready-for-stock.jpeg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/#\/schema\/person\/8b6dc8feb339d7e9e097338ca840afb3\"},\"headline\":\"Crankpin Bearings for MAK, MAN, Yanmar, and Daihatsu Engines\",\"datePublished\":\"2025-08-18T08:08:27+00:00\",\"dateModified\":\"2026-05-13T09:19:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/\"},\"wordCount\":422,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Crankpin-Bearings.jpg\",\"keywords\":[\"crankpin bearing for MAK\",\"crankpin bearing of yanamar engine\",\"crankpin bearings\",\"crankpin bearings for Caterpillar MaK\",\"crankpin bearings for different engines\",\"man journal bearings\"],\"articleSection\":[\"crankpin bearings\",\"crankpin bearings for W\u00e4rtsil\u00e4 engines\",\"manufacture crankpin bearings\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#respond\"]}]},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/\",\"url\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/\",\"name\":\"Crankpin Bearings for Marine Engines | RA Power Solutions\",\"isPartOf\":{\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.connectingrodrepair.com\/blog\/wp-content\/uploads\/2025\/08\/Crankpin-Bearings.jpg\",\"datePublished\":\"2025-08-18T08:08:27+00:00\",\"dateModified\":\"2026-05-13T09:19:51+00:00\",\"description\":\"Standard & undersized crankpin bearings for MAN, MAK, Yanmar & Daihatsu engines. 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What is a crankpin bearing?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\" <strong><a href=\\\"https:\/\/www.connectingrodrepair.com\/blog\/undersized-bearings-crankpin-bearings-for-marine-and-diesel-engines\/\\\">Crankpin bearing<\/a> <\/strong>supports the crankshaft and enables smooth rotation under heavy loads.<br\/>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#faq-question-1755504630324\",\"position\":2,\"url\":\"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#faq-question-1755504630324\",\"name\":\"2. 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What is a crankpin bearing?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":" <strong><a href=\"https:\/\/www.connectingrodrepair.com\/blog\/undersized-bearings-crankpin-bearings-for-marine-and-diesel-engines\/\">Crankpin bearing<\/a> <\/strong>supports the crankshaft and enables smooth rotation under heavy loads.<br\/>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#faq-question-1755504630324","position":2,"url":"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#faq-question-1755504630324","name":"2. Why do crankpin bearings fail?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"They usually fail due to poor lubrication, contamination, or misalignment.<br\/>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#faq-question-1755504643137","position":3,"url":"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#faq-question-1755504643137","name":"3. Can undersize crankpin bearings be supplied?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, undersize bearings are available after crankshaft grinding.<br\/>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#faq-question-1755504656076","position":4,"url":"https:\/\/www.connectingrodrepair.com\/blog\/crankpin-bearings-for-mak-man-yanmar-and-daihatsu-engines\/#faq-question-1755504656076","name":"4. 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