[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-563440-105":53,"doc-detail-563440-en":126},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":119,"head_meta":121,"extra_data":123,"updated_unix":125},105,"en","renold-chain-designer-guide-section-3-designer-guide-specification-guidelines","Renold Chain Designer Guide - Section 3 - Designer Guide Specification Guidelines","","Renold Chain Designer Guide Section 3 outlines the designer-oriented specification guidelines behind the evolution and selection of roller/bush chain products. It contrasts early roller/bush chain limitations—such as tolerance constraints, materials, and production methods—with later improvements driven by refined manufacturing and heat treatment. It then surveys modern chain groups (conveyor, cranked link, leaf, and European/American transmission chain), describing typical geometry drivers and performance features like wear resistance and transmission efficiency, and explains how breaking load and ISO compliance relate to fatigue and wear behavior.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/renold-chain-designer-guide-section-3-designer-guide-specification-guidelines/563440/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/renold-chain-designer-guide-section-3-designer-guide-specification-guidelines/563440.png","ImageObject",442,249,{"name":88,"@type":89},"Eliana","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-20","2026-10-12",true,{"@type":98,"interactionType":99,"userInteractionCount":79},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"What limited early roller/bush chain performance compared with modern chain?","Question",{"text":108,"@type":109},"Early chain performance was constrained by design knowledge, material sophistication, and production processes, leading to lower strength-to-weight ratios, erratic pitch control, poor engagement characteristics, and point loading with high bearing pressures.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"How does the guide characterize different modern chain product groups?",{"text":113,"@type":109},"It describes conveyor chain emphasis on tensile strength with long pitch and large roller diameter, cranked link chain for low-speed harsh-environment conveying, leaf chain for force transmission via anchored ends with plain pulleys, and transmission chain series such as European (British Standard lineage) and American/ANSI (mathematical sizing theme).",{"name":115,"@type":106,"acceptedAnswer":116},"Why does the guide treat wear and fatigue as key performance indicators beyond breaking load?",{"text":117,"@type":109},"Breaking load is not treated as the key indicator because it ignores principal factors of wear and fatigue; Renold designs products to achieve strong results in these areas, supported by independent testing and ISO-related notes on minimum standards and guaranteed loads.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},563440,1792214949,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":79,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":141},4398048949847,"https://ap-avatar.wpscdn.com/avatar/400002536579ef2da7f?_k=1778318612642679267","S E C T I O N 3  \nDESIGNER GUIDE SPECIFICATION GUIDELINES  \n[www.renold.com](www.renold.com engineering)[ engineering](www.renold.com engineering) excellence 93  \nRenold Chain Designer Guide    \n3  \nDevelopment of  \nEarly Roller/Bush Chain  \nAs the industrial revolution gained pace, the need for higher performance chain ensured that the product did not stand still. A quick look at the 1880 patent would give the impression that there is no difference between it and modern chain.  \nIn concept, this is true. However, early chain performance was very much constrained by design knowledge, material sophistication and production processes. For example, in order to achieve a close tolerance on round parts, Hans Renold also pioneered centreless grinding and at one time had a whole section devoted to grinding cold drawn bar to size before further processing.  \nThe shortcomings of available technology meant that, compared with modern chain, there were low strength to weight ratios, erratic pitch control, poor engagement characteristics and a tendency toward point loading, causing high bearing pressures, wear and failure. The ever increasing number of applications for chain resulted in a continuous refinement of our production processes and the introduction of heat treatment, improving Renold Chain to meet these new and arduous demands.  \nModern Chain  \nThere is today a very wide range of chain products available. Some of these are special low volume products, for example nuclear waste handling chain. Other high volume products such as motorcycle chain are an offshoot of one of the key groups shown below.  \nAt the top level of the chain groups, conveyor chain is perhaps the most difficult to compartmentalize, since most types of chain can be used to convey. There is, however, a range of so called conveyor chain products typified by its long pitch, large roller diameter and emphasis on tensile strength rather than fatigue life.  \nCranked link chain, like conveyor chain, is intended to run only at low speeds, since the presence of a cranked plate will reduce fatigue life. This chain tends to be used in conveying applications where harsh environmental conditions prevail, in mineral excavation for example.  \nLeaf chain is similar in construction to the old Galle chain, except that plates are interleaved in various configurations right across the width of the pin. This means that there is no way of providing sprocket engagement and the chain can only be used to transmit force through suitably anchored ends. Chains are guided around simple plain pulleys. Perhaps the best example of the use of leaf chain is in the lifting mechanism of a fork lift truck.  \nThis leaves the most important group of chain, the European and American series of transmission chain. The European (from the old British Standard) range, grew out of the early pioneering work of Hans Renold, as mentioned above, and the size of components through the range therefore reflected a growing understanding of chain design and probably was influenced by the availability of stock material sizes. The American or ANSI range, which came later, has a clear mathematical theme, whereby the sizes of components are calculated in accordance with expressions now quoted in the ANSI standard B29 .1. It should also be mentioned here that the ANSI range of chain is shadowed by a range of similar chains, but using the side plate material from the chain of the next highest size. This results in a range of chains with higher fatigue life but not necessarily higher tensile strength, since the pin diameters are unchanged.  \n94 engineering [excellence](excellence www.renold.com)[ www.renold.com](excellence www.renold.com)  \nRenold Chain Designer Guide  \nBoth European and ANSI ranges of chain are available in double pitch and bush chain forms. Double pitch is primarily another form of conveyor chain using the round parts from a standard chain, but having twice the pitch.  \nBush chain is simply roller chain ","cbCaiunzgjNyF4Yb","https://ap.wps.com/l/cbCaiunzgjNyF4Yb","pdf",1515429,27,"English","# Development of Early Roller/Bush Chain\n# Modern Chain\n# Chain Performance","[{\"question\":\"What limited early roller/bush chain performance compared with modern chain?\",\"answer\":\"Early chain performance was constrained by design knowledge, material sophistication, and production processes, leading to lower strength-to-weight ratios, erratic pitch control, poor engagement characteristics, and point loading with high bearing pressures.\"},{\"question\":\"How does the guide characterize different modern chain product groups?\",\"answer\":\"It describes conveyor chain emphasis on tensile strength with long pitch and large roller diameter, cranked link chain for low-speed harsh-environment conveying, leaf chain for force transmission via anchored ends with plain pulleys, and transmission chain series such as European (British Standard lineage) and American/ANSI (mathematical sizing theme).\"},{\"question\":\"Why does the guide treat wear and fatigue as key performance indicators beyond breaking load?\",\"answer\":\"Breaking load is not treated as the key indicator because it ignores principal factors of wear and fatigue; Renold designs products to achieve strong results in these areas, supported by independent testing and ISO-related notes on minimum standards and guaranteed loads.\"}]","Renold Chain Designer Guide - Section 3 - Designer Guide Specification Guidelines | PDF",1791834937,9]