{"product_id":"simplex-duplex-roller-chain-04c-06b-08b-10a-12a-industrial-transmission-chain","title":"Simplex\/Duplex Roller Chain 04C, 06B, 08B, 10A,12A Industrial Transmission Chain","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eSimplex \u0026amp; Duplex Roller Chain — Precision Drive Power for Industrial \u0026amp; DIY Applications\u003c\/h2\u003e\n    \u003cp\u003eWhen a worn or undersized drive chain causes slippage, noise, or unexpected downtime, engineers and makers need a reliable replacement they can size and order without guesswork. These simplex and duplex roller chains are stocked in the most common ANSI\/ISO series — #25 (04C), #35 (06B), #40 (08B), #50 (10A), and #60 (12A) — covering pitches from 1\/4 inch (6.35 mm) up to 3\/4 inch (19.05 mm), so hobbyists, maintenance technicians, and small-batch manufacturers can find the exact spec in one place.\u003c\/p\u003e\n    \u003cp\u003eEach chain is constructed from carbon steel link plates, precision-ground pins, and hardened rollers. Simplex (single-strand) chains are available from 0.5 m to 5 m lengths; duplex (double-strand) chains are available in 1.524 m lengths. The roller diameter and inner plate height conform to ISO 606 \/ ANSI B29.1 dimensional standards, ensuring drop-in compatibility with standard sprockets of the same series number.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include go-kart and mini-bike final drives (#35 simplex), conveyor and packaging line drives (#40 and #50 simplex\/duplex), agricultural equipment power transmission (#50 duplex), and light industrial automation where a compact #25 chain replaces a timing belt. Whether you are building a custom roller chain conveyor system or sourcing a replacement roller chain for a go-kart drivetrain, these chains deliver consistent pitch accuracy and long service intervals.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits all standard ANSI\/ISO sprockets matching the selected chain series (#25, #35, #40, #50, #60). Verify sprocket tooth profile and bore before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These Simplex \u0026amp; Duplex Roller Chains\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-list\"\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003eMulti-Series Coverage\u003c\/strong\u003e\n        \u003cp\u003eFive ANSI\/ISO series in one listing — #25 (6.35 mm pitch) through #60 (19.05 mm pitch) — eliminating the need to source from multiple suppliers for a single project.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cstrong\u003eSimplex \u0026amp; Duplex Configurations\u003c\/strong\u003e\n        \u003cp\u003eChoose single-strand simplex for standard drives or double-strand duplex for higher load capacity without increasing sprocket size, ideal for compact gearbox outputs.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n        \u003cstrong\u003eISO 606 \/ ANSI B29.1 Dimensional Compliance\u003c\/strong\u003e\n        \u003cp\u003eRoller diameter, pin diameter, and plate height conform to published standards, ensuring interchangeability with any compliant sprocket on the market.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n        \u003cstrong\u003eHardened Rollers \u0026amp; Ground Pins\u003c\/strong\u003e\n        \u003cp\u003eHeat-treated rollers reduce sprocket tooth wear; precision-ground pins maintain consistent pitch under cyclic loading, extending chain life in continuous-duty applications.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n        \u003cstrong\u003eFlexible Cut Lengths\u003c\/strong\u003e\n        \u003cp\u003eAvailable in 0.5 m, 1 m, 1.5 m, 1.524 m, and 5 m lengths so you order only what you need — no waste from cutting down an oversized reel.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003eBroad Application Range\u003c\/strong\u003e\n        \u003cp\u003eSuitable for go-kart drives, conveyor lines, agricultural equipment, light industrial automation, and DIY power transmission projects requiring a dependable roller chain replacement.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — Simplex \u0026amp; Duplex Roller Chain\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eChain Standard\u003c\/th\u003e\n\u003ctd\u003eISO 606 \/ ANSI B29.1\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSeries Available\u003c\/th\u003e\n\u003ctd\u003e#25 (04C), #35 (06B), #40 (08B), #50 (10A), #60 (12A)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePitch Range\u003c\/th\u003e\n\u003ctd\u003e6.35 mm – 19.05 mm (1\/4 in – 3\/4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eStrand Configuration\u003c\/th\u003e\n\u003ctd\u003eSimplex (single-strand) \/ Duplex (double-strand)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e0.5 m, 1 m, 1.5 m, 1.524 m, 5 m\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLink Plate Material\u003c\/th\u003e\n\u003ctd\u003eCarbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePin Treatment\u003c\/th\u003e\n\u003ctd\u003ePrecision ground\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRoller Treatment\u003c\/th\u003e\n\u003ctd\u003eHeat treated \/ hardened\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRoller Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInner Plate Height\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBreaking Load\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWeight per Meter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural steel (uncoated)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003ePre-lubricated at assembly; periodic re-lubrication recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose between simplex and duplex for my application?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSimplex (single-strand) chains are the standard choice for most drives where the sprocket width and center distance allow adequate wrap. Duplex (double-strand) chains carry roughly twice the load of the equivalent simplex series, making them the right pick when you need higher torque capacity without moving to a larger pitch — common in compact gearbox outputs and heavy conveyor drives.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich chain series fits a standard go-kart or mini-bike?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMost go-karts and mini-bikes use #35 (06B) simplex chain with a 3\/8 inch (9.525 mm) pitch. Some heavier karts or those with larger engines use #40 (08B) simplex. Check your existing sprocket markings or measure the pitch between three consecutive pins and divide by two to confirm the series before ordering.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these chains compatible with my existing sprockets?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — provided your sprockets are manufactured to the same ANSI\/ISO series standard. Match the series number on your sprocket (e.g., 35, 40, 50) to the chain model number in the variant selector. If your sprocket is marked with an ISO designation (06B, 08B, 10A), use the corresponding chain model shown in parentheses in the listing.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow corrosion-resistant are these chains?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese chains are manufactured from carbon steel with a natural (uncoated) finish and are pre-lubricated at assembly. They are suitable for indoor and sheltered outdoor environments. For wet, washdown, or chemically aggressive environments, consider stainless steel or nickel-plated chain variants. Regular re-lubrication with a chain-specific oil will significantly extend service life in moderately humid conditions.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat length should I order for my drive?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eCalculate the required chain length using the standard formula: L = 2C + (N₁ + N₂)\/2 + (N₂ − N₁)²\/(4π²C), where C is center distance in pitches and N₁\/N₂ are the tooth counts of the small and large sprockets. Round up to the nearest even link count, then convert to meters using the pitch of your selected series. If you need a custom cut, order the next available length above your calculated requirement.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I join two lengths together to make a longer run?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Standard connecting links (also called master links) of the matching series can be used to join chain sections end-to-end. Ensure the total link count results in an even number for a straight-link join; if an odd count is unavoidable, use an offset link of the same series. Both connecting links and offset links are available separately in our fasteners category.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I know when the chain needs to be replaced?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure chain elongation using a chain wear indicator tool or a ruler: place the tool or measure across a fixed number of links and compare against the new-chain dimension. A chain elongated by 1% (e.g., a 12-inch span measuring 12.12 inches or more) should be replaced to prevent accelerated sprocket wear. Also inspect for cracked plates, stiff links, or visible roller damage.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need to cut the chain to length myself?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe chain is supplied in the length you select at checkout. If your calculated requirement falls between available lengths, order the next size up and trim using a chain breaker tool (also called a chain splitter) of the appropriate series. A chain breaker drives out the pin cleanly without damaging adjacent links, and the removed section can be saved as a spare connecting link.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your Model, Pitch, and Length above, then add to cart.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose between simplex and duplex for my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Simplex (single-strand) chains are the standard choice for most drives where the sprocket width and center distance allow adequate wrap. Duplex (double-strand) chains carry roughly twice the load of the equivalent simplex series, making them the right pick when you need higher torque capacity without moving to a larger pitch.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which chain series fits a standard go-kart or mini-bike?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Most go-karts and mini-bikes use #35 (06B) simplex chain with a 3\/8 inch (9.525 mm) pitch. Some heavier karts use #40 (08B) simplex. Check your existing sprocket markings or measure the pitch to confirm the series.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these chains compatible with my existing sprockets?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, provided your sprockets are manufactured to the same ANSI\/ISO series standard. Match the series number on your sprocket to the chain model number in the variant selector.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How corrosion-resistant are these chains?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These chains are carbon steel with a natural finish, pre-lubricated at assembly. They are suitable for indoor and sheltered outdoor environments. Regular re-lubrication extends service life in moderately humid conditions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What length should I order for my drive?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Calculate required chain length using the standard sprocket center-distance formula, round up to the nearest even link count, then convert to meters using your selected series pitch.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I join two lengths together to make a longer run?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Use a standard connecting link (master link) of the matching series to join chain sections. Ensure an even total link count for a straight-link join, or use an offset link if an odd count is unavoidable.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I know when the chain needs to be replaced?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Replace the chain when elongation reaches 1% (e.g., a 12-inch span measuring 12.12 inches or more). Also inspect for cracked plates, stiff links, or visible roller damage.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to cut the chain to length myself?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The chain is supplied in the length selected at checkout. If your requirement falls between available lengths, order the next size up and trim using a chain breaker tool of the appropriate series.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"#25(04C) \/ 1\/4 inch (6.35mm) \/ 0.5 Meter","offer_id":52423176782098,"sku":"GLFBQLWJGJXCD0025x1","price":8.55,"currency_code":"USD","in_stock":true},{"title":"#25(04C) \/ 1\/4 inch (6.35mm) \/ 1 Meter","offer_id":52423176814866,"sku":"GLFBQLWJGJXCD0026x1","price":14.95,"currency_code":"USD","in_stock":true},{"title":"#25(04C) \/ 1\/4 inch (6.35mm) \/ 1.5 Meter","offer_id":52423176847634,"sku":"GLFBQLWJGJXCD0027x1","price":21.01,"currency_code":"USD","in_stock":true},{"title":"#25(04C) \/ 1\/4 inch (6.35mm) \/ 5 Meter","offer_id":52423176880402,"sku":"GLFBQLWJGJXCD0028x1","price":60.78,"currency_code":"USD","in_stock":true},{"title":"#35(06B)Simplex \/ 3\/8 inch (9.525mm) \/ 1.524 Meter","offer_id":52423176913170,"sku":"GLFBQLWJGJXCD0029x1","price":47.45,"currency_code":"USD","in_stock":true},{"title":"#35(06B)Duplex \/ 3\/8 inch (9.525mm) \/ 1.524 Meter","offer_id":52423176945938,"sku":"GLFBQLWJGJXCD0030x1","price":85.61,"currency_code":"USD","in_stock":true},{"title":"#40(08B)Simplex \/ 1\/2 inch (12.7mm) \/ 1.524 Meter","offer_id":52423176978706,"sku":"GLFBQLWJGJXCD0031x1","price":71.25,"currency_code":"USD","in_stock":true},{"title":"#40(08B)Duplex \/ 1\/2 inch (12.7mm) \/ 1.524 Meter","offer_id":52423177011474,"sku":"GLFBQLWJGJXCD0032x1","price":178.96,"currency_code":"USD","in_stock":true},{"title":"#50(10A)Simplex \/ 5\/8 inch (15.875mm) \/ 1.524 Meter","offer_id":52423177044242,"sku":"GLFBQLWJGJXCD0033x1","price":99.4,"currency_code":"USD","in_stock":true},{"title":"#50(10A)Duplex \/ 5\/8 inch (15.875mm) \/ 1.524 Meter","offer_id":52423177077010,"sku":"GLFBQLWJGJXCD0034x1","price":238.2,"currency_code":"USD","in_stock":true},{"title":"#60(12A)Simplex \/ 3\/4 inch (19.05mm) \/ 1.524 Meter","offer_id":52423177109778,"sku":"GLFBQLWJGJXCD0035x1","price":190.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of17_d81f4efc-1776-4ad3-92a5-d123f798dd6a.jpg?v=1782582157","url":"https:\/\/homediyer.com\/products\/simplex-duplex-roller-chain-04c-06b-08b-10a-12a-industrial-transmission-chain","provider":"HomeDIYer","version":"1.0","type":"link"}